/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=1.0 --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/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:52:15,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:52:15,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:52:15,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:52:15,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:52:15,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:52:15,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:52:15,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:52:15,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:52:15,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:52:15,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:52:15,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:52:15,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:52:15,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:52:15,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:52:15,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:52:15,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:52:15,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:52:15,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:52:15,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:52:15,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:52:15,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:52:15,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:52:15,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:52:15,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:52:15,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:52:15,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:52:15,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:52:15,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:52:15,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:52:15,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:52:15,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:52:15,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:52:15,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:52:15,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:52:15,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:52:15,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:52:15,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:52:15,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:52:15,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:52:15,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:52:15,884 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 08:52:15,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:52:15,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:52:15,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:52:15,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:52:15,913 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:52:15,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:52:15,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:52:15,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:52:15,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:52:15,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:52:15,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:52:15,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:52:15,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:52:15,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:52:15,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:52:15,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:52:15,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:52:15,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:52:15,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:52:15,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:52:15,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:52:15,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:15,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:52:15,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:52:15,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:52:15,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:52:15,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:52:15,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:52:15,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:52:15,918 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:52:16,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:52:16,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:52:16,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:52:16,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:52:16,435 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:52:16,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-09-25 08:52:16,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e645c95/866aecfb8ef14667b4ffd6db57989e0a/FLAG3651ec964 [2020-09-25 08:52:17,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:52:17,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition03-1.c [2020-09-25 08:52:17,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e645c95/866aecfb8ef14667b4ffd6db57989e0a/FLAG3651ec964 [2020-09-25 08:52:17,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e645c95/866aecfb8ef14667b4ffd6db57989e0a [2020-09-25 08:52:17,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:52:17,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:52:17,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:17,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:52:17,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:52:17,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17, skipping insertion in model container [2020-09-25 08:52:17,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:52:17,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:52:17,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:17,716 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:52:17,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:17,752 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:52:17,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17 WrapperNode [2020-09-25 08:52:17,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:17,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:52:17,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:52:17,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:52:17,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (1/1) ... [2020-09-25 08:52:17,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:52:17,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:52:17,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:52:17,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:52:17,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:52:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:52:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-25 08:52:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:52:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:52:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:52:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-25 08:52:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:52:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:52:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:52:18,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:52:18,192 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:52:18,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:18 BoogieIcfgContainer [2020-09-25 08:52:18,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:52:18,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:52:18,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:52:18,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:52:18,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:52:17" (1/3) ... [2020-09-25 08:52:18,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4495c650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:18, skipping insertion in model container [2020-09-25 08:52:18,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:17" (2/3) ... [2020-09-25 08:52:18,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4495c650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:18, skipping insertion in model container [2020-09-25 08:52:18,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:18" (3/3) ... [2020-09-25 08:52:18,223 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-09-25 08:52:18,261 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:52:18,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:52:18,331 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:52:18,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:52:18,364 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:52:18,365 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:52:18,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:52:18,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:52:18,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:52:18,365 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:52:18,365 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:52:18,390 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-25 08:52:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 08:52:18,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:18,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:18,403 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:18,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1218957033, now seen corresponding path program 1 times [2020-09-25 08:52:18,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:18,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433962689] [2020-09-25 08:52:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:18,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:18,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 08:52:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:18,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:52:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:52:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:18,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:18,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:18,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:18,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:18,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:18,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:18,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:18,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:52:18,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:18,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:18,986 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 08:52:18,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433962689] [2020-09-25 08:52:18,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:18,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:52:18,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336981436] [2020-09-25 08:52:19,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:52:19,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:19,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:52:19,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:52:19,028 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-25 08:52:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:19,161 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-25 08:52:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:52:19,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-25 08:52:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:19,178 INFO L225 Difference]: With dead ends: 53 [2020-09-25 08:52:19,179 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 08:52:19,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 08:52:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 08:52:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 08:52:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 08:52:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-09-25 08:52:19,246 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 22 [2020-09-25 08:52:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:19,246 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-09-25 08:52:19,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:52:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-09-25 08:52:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 08:52:19,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:19,250 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, 1, 1, 1, 1, 1] [2020-09-25 08:52:19,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:52:19,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:19,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:19,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1438677315, now seen corresponding path program 1 times [2020-09-25 08:52:19,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:19,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799361946] [2020-09-25 08:52:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 08:52:19,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 08:52:19,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 08:52:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:19,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:19,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:19,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 08:52:19,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:19,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:19,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:19,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:52:19,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:19,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:19,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:19,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:19,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 08:52:19,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799361946] [2020-09-25 08:52:19,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:19,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:52:19,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497559] [2020-09-25 08:52:19,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:52:19,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:19,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:52:19,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:19,766 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 6 states. [2020-09-25 08:52:19,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:19,871 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-09-25 08:52:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:52:19,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-25 08:52:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:19,874 INFO L225 Difference]: With dead ends: 48 [2020-09-25 08:52:19,887 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 08:52:19,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:52:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 08:52:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 08:52:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 08:52:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 08:52:19,902 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 32 [2020-09-25 08:52:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:19,903 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 08:52:19,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:52:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 08:52:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:52:19,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:19,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:19,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:52:19,909 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash -305631715, now seen corresponding path program 1 times [2020-09-25 08:52:19,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:19,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017938344] [2020-09-25 08:52:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 08:52:20,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 08:52:20,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 08:52:20,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:20,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:20,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:20,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 08:52:20,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:20,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:52:20,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 08:52:20,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:52:20,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017938344] [2020-09-25 08:52:20,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:20,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:52:20,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199670422] [2020-09-25 08:52:20,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:52:20,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:20,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:52:20,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:52:20,610 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 08:52:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:20,758 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2020-09-25 08:52:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:52:20,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 08:52:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:20,761 INFO L225 Difference]: With dead ends: 89 [2020-09-25 08:52:20,762 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 08:52:20,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 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 08:52:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 08:52:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-09-25 08:52:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 08:52:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-09-25 08:52:20,774 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 33 [2020-09-25 08:52:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:20,775 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-09-25 08:52:20,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:52:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-09-25 08:52:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 08:52:20,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:20,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:20,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:52:20,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:20,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:20,778 INFO L82 PathProgramCache]: Analyzing trace with hash 967575145, now seen corresponding path program 2 times [2020-09-25 08:52:20,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:20,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927811968] [2020-09-25 08:52:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:52:20,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 08:52:20,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:52:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:52:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:20,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:20,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:20,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:20,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:20,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:20,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:21,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 08:52:21,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:52:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:21,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:21,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 08:52:21,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:21,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:21,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:21,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:52:21,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:21,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 08:52:21,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927811968] [2020-09-25 08:52:21,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:21,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:52:21,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866727504] [2020-09-25 08:52:21,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:52:21,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:21,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:52:21,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:52:21,312 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 8 states. [2020-09-25 08:52:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:21,472 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-09-25 08:52:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:52:21,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-25 08:52:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:21,474 INFO L225 Difference]: With dead ends: 67 [2020-09-25 08:52:21,475 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 08:52:21,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:52:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 08:52:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-25 08:52:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 08:52:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 08:52:21,487 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 42 [2020-09-25 08:52:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:21,487 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 08:52:21,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:52:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 08:52:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 08:52:21,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:21,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:21,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:52:21,490 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1539519487, now seen corresponding path program 2 times [2020-09-25 08:52:21,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:21,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938590392] [2020-09-25 08:52:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 08:52:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:52:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-09-25 08:52:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:22,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 08:52:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:22,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:22,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:22,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:22,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:22,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:22,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:52:22,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-25 08:52:22,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:22,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:52:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:22,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:22,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:52:22,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 08:52:22,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:22,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:52:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:22,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:22,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:52:22,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:22,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:52:22,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:22,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:52:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 08:52:22,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938590392] [2020-09-25 08:52:22,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:22,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:52:22,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003015208] [2020-09-25 08:52:22,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:52:22,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:22,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:52:22,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:52:22,694 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 6 states. [2020-09-25 08:52:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:22,787 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2020-09-25 08:52:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:52:22,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-25 08:52:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:22,789 INFO L225 Difference]: With dead ends: 79 [2020-09-25 08:52:22,790 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 08:52:22,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:52:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 08:52:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 08:52:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 08:52:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 08:52:22,797 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 43 [2020-09-25 08:52:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:22,798 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 08:52:22,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:52:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 08:52:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 08:52:22,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:22,800 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:22,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:52:22,801 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:22,801 INFO L82 PathProgramCache]: Analyzing trace with hash -321617853, now seen corresponding path program 3 times [2020-09-25 08:52:22,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:22,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120975599] [2020-09-25 08:52:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:22,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 08:52:23,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 08:52:23,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:52:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:23,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:23,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:23,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 08:52:23,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:23,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:23,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 08:52:23,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:23,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 08:52:23,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:23,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:23,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:23,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:52:23,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:23,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 08:52:23,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120975599] [2020-09-25 08:52:23,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:23,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 08:52:23,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107834154] [2020-09-25 08:52:23,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:52:23,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:23,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:52:23,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:23,574 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-09-25 08:52:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:23,672 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 08:52:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:52:23,672 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-25 08:52:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:23,673 INFO L225 Difference]: With dead ends: 51 [2020-09-25 08:52:23,674 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 08:52:23,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:52:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 08:52:23,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 08:52:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 08:52:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 08:52:23,681 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 52 [2020-09-25 08:52:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:23,681 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 08:52:23,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:52:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 08:52:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 08:52:23,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:23,683 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:23,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:52:23,683 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:23,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1776668137, now seen corresponding path program 4 times [2020-09-25 08:52:23,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:23,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474356916] [2020-09-25 08:52:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 08:52:24,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-25 08:52:24,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 08:52:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:24,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:24,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 08:52:24,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:52:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:24,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 08:52:24,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:24,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 08:52:24,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:24,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:52:24,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:24,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:24,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:24,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:24,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:52:24,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:24,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 08:52:24,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474356916] [2020-09-25 08:52:24,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:24,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 08:52:24,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361485521] [2020-09-25 08:52:24,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:52:24,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:24,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:52:24,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:24,897 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2020-09-25 08:52:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:25,023 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 08:52:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:52:25,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-25 08:52:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:25,028 INFO L225 Difference]: With dead ends: 56 [2020-09-25 08:52:25,030 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 08:52:25,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 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 08:52:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 08:52:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 08:52:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:52:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 08:52:25,042 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 62 [2020-09-25 08:52:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:25,045 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 08:52:25,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:52:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 08:52:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 08:52:25,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:25,048 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:25,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:52:25,048 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1043024061, now seen corresponding path program 5 times [2020-09-25 08:52:25,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:25,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494288906] [2020-09-25 08:52:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:52:25,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:25,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-25 08:52:25,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:52:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 08:52:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:25,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:25,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:52:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-25 08:52:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:25,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:52:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:52:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:26,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:26,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 08:52:26,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:26,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:26,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:26,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:26,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:26,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 08:52:26,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:26,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:26,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:26,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:26,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 08:52:26,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:26,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:26,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:26,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:26,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:26,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:26,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:26,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:26,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 08:52:26,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:26,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:26,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:26,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:26,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:52:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:26,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 69 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-25 08:52:26,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494288906] [2020-09-25 08:52:26,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:26,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:52:26,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384260633] [2020-09-25 08:52:26,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:52:26,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:26,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:52:26,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:52:26,699 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 11 states. [2020-09-25 08:52:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:26,823 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 08:52:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:52:26,824 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-09-25 08:52:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:26,825 INFO L225 Difference]: With dead ends: 61 [2020-09-25 08:52:26,825 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 08:52:26,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 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 08:52:26,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 08:52:26,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 08:52:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 08:52:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 08:52:26,832 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 08:52:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:26,833 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 08:52:26,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:52:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 08:52:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 08:52:26,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:26,834 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:26,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:52:26,835 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:26,835 INFO L82 PathProgramCache]: Analyzing trace with hash -473356951, now seen corresponding path program 6 times [2020-09-25 08:52:26,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:26,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107872136] [2020-09-25 08:52:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 08:52:27,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-09-25 08:52:27,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:52:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 08:52:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:27,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:27,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:27,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:27,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:52:27,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-09-25 08:52:27,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:27,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:52:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:52:27,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:28,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:28,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:52:28,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-25 08:52:28,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:28,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:52:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:28,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:28,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:28,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:28,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 08:52:28,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:28,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:28,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:28,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:28,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:28,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 08:52:28,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:28,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:28,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:28,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:28,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 08:52:28,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:28,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:28,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:28,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:28,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 08:52:28,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:28,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:28,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:28,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:28,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:28,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:28,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 20 proven. 93 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 08:52:28,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107872136] [2020-09-25 08:52:28,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:28,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:52:28,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936085878] [2020-09-25 08:52:28,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:52:28,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:28,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:52:28,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:52:28,951 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 12 states. [2020-09-25 08:52:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:29,071 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 08:52:29,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:52:29,071 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-09-25 08:52:29,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:29,073 INFO L225 Difference]: With dead ends: 66 [2020-09-25 08:52:29,073 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 08:52:29,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 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 08:52:29,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 08:52:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 08:52:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 08:52:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 08:52:29,080 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 82 [2020-09-25 08:52:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:29,080 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 08:52:29,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:52:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 08:52:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 08:52:29,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:29,082 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:29,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:52:29,082 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:29,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1366105667, now seen corresponding path program 7 times [2020-09-25 08:52:29,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:29,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309094421] [2020-09-25 08:52:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:29,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:29,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 08:52:29,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-09-25 08:52:29,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:29,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 08:52:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 08:52:29,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:29,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:29,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:29,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:29,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:29,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:29,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:30,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:30,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:52:30,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:30,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-09-25 08:52:30,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:30,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 08:52:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:52:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:30,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:30,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:52:30,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-25 08:52:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:30,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:52:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:52:31,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 08:52:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:52:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:31,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 08:52:31,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:31,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 08:52:31,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:31,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:31,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 08:52:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:31,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 08:52:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:31,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:31,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:52:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:31,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 12 proven. 131 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-25 08:52:31,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309094421] [2020-09-25 08:52:31,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:31,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 08:52:31,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91528709] [2020-09-25 08:52:31,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:52:31,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:31,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:52:31,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:52:31,891 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 13 states. [2020-09-25 08:52:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:32,024 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 08:52:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:52:32,024 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-09-25 08:52:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:32,025 INFO L225 Difference]: With dead ends: 71 [2020-09-25 08:52:32,025 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 08:52:32,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:52:32,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 08:52:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 08:52:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 08:52:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 08:52:32,039 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 92 [2020-09-25 08:52:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:32,040 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 08:52:32,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:52:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 08:52:32,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 08:52:32,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:32,041 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:32,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:52:32,042 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:32,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:32,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1932915479, now seen corresponding path program 8 times [2020-09-25 08:52:32,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:32,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191633888] [2020-09-25 08:52:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 08:52:32,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-09-25 08:52:32,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 08:52:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 08:52:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:32,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:32,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:32,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:32,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:32,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:32,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:33,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:33,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:52:33,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:33,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-25 08:52:33,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:33,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 08:52:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 08:52:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:33,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:33,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:52:33,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 08:52:33,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:33,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:52:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:33,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:52:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:52:34,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 08:52:34,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:52:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:52:34,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 08:52:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:52:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:34,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:34,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:34,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:34,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 08:52:34,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:34,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:34,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:35,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:35,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 08:52:35,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:35,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:35,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 08:52:35,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:35,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:35,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:35,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:35,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 08:52:35,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:35,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:35,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:35,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:35,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:35,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:35,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:35,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:35,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:52:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-09-25 08:52:35,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191633888] [2020-09-25 08:52:35,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:35,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 08:52:35,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291384180] [2020-09-25 08:52:35,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 08:52:35,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:35,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 08:52:35,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:52:35,536 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 14 states. [2020-09-25 08:52:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:35,744 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 08:52:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 08:52:35,745 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-09-25 08:52:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:35,747 INFO L225 Difference]: With dead ends: 76 [2020-09-25 08:52:35,747 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 08:52:35,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 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 08:52:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 08:52:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 08:52:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 08:52:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 08:52:35,766 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 102 [2020-09-25 08:52:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:35,767 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 08:52:35,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 08:52:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 08:52:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 08:52:35,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:35,770 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:35,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:52:35,771 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:35,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1924549309, now seen corresponding path program 9 times [2020-09-25 08:52:35,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:35,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089607804] [2020-09-25 08:52:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:35,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:36,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 08:52:36,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-09-25 08:52:36,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:36,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:52:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 08:52:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:36,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:36,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:36,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:36,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:36,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:36,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:36,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:36,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:36,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:36,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:36,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:37,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 08:52:37,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-09-25 08:52:37,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:37,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:52:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 08:52:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:38,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:38,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:52:38,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-09-25 08:52:38,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:38,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:52:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 08:52:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:38,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:38,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:52:38,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:38,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 08:52:38,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:38,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:52:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:52:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:39,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:52:39,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-25 08:52:39,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:39,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:52:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:39,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:52:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 08:52:39,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:39,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:52:39,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:39,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 08:52:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:40,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 08:52:40,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:40,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:40,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 08:52:40,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:40,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 08:52:40,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:40,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:40,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:40,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:40,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:40,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:40,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:40,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:40,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 30 proven. 225 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-09-25 08:52:40,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089607804] [2020-09-25 08:52:40,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:40,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:52:40,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931706152] [2020-09-25 08:52:40,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:52:40,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:40,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:52:40,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:52:40,283 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 15 states. [2020-09-25 08:52:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:40,470 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 08:52:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:52:40,470 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 112 [2020-09-25 08:52:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:40,472 INFO L225 Difference]: With dead ends: 81 [2020-09-25 08:52:40,472 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 08:52:40,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 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 08:52:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 08:52:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 08:52:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 08:52:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 08:52:40,478 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 112 [2020-09-25 08:52:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:40,478 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 08:52:40,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:52:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 08:52:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 08:52:40,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:40,480 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:40,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:52:40,481 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1700562025, now seen corresponding path program 10 times [2020-09-25 08:52:40,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:40,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340820262] [2020-09-25 08:52:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:41,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 08:52:41,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-09-25 08:52:41,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:41,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 08:52:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 08:52:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:41,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:41,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:41,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:41,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:42,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:42,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 08:52:42,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:42,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-09-25 08:52:42,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:42,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:42,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 08:52:42,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 08:52:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:42,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 08:52:43,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-09-25 08:52:43,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:52:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 08:52:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:43,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:43,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:52:43,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-09-25 08:52:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:43,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:52:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 08:52:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:43,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:44,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:44,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:52:44,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-25 08:52:44,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:44,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:52:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:52:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:44,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:52:44,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 08:52:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:44,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:52:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:44,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:44,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:52:44,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 08:52:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:44,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:52:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:44,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:45,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 08:52:45,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:45,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:45,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 08:52:45,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:45,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:45,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:45,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 08:52:45,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:45,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:45,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 08:52:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:45,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:45,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:45,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:45,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:52:45,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:45,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:45,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 17 proven. 284 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-09-25 08:52:45,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340820262] [2020-09-25 08:52:45,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:45,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:52:45,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422128682] [2020-09-25 08:52:45,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:52:45,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:45,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:52:45,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:52:45,596 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 16 states. [2020-09-25 08:52:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:45,807 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-09-25 08:52:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:52:45,808 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 122 [2020-09-25 08:52:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:45,810 INFO L225 Difference]: With dead ends: 86 [2020-09-25 08:52:45,810 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 08:52:45,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 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 08:52:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 08:52:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-25 08:52:45,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 08:52:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-25 08:52:45,816 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 122 [2020-09-25 08:52:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:45,817 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-25 08:52:45,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:52:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-25 08:52:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 08:52:45,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:45,820 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:45,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:52:45,821 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:45,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1676247997, now seen corresponding path program 11 times [2020-09-25 08:52:45,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:45,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938454978] [2020-09-25 08:52:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:46,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 08:52:46,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-25 08:52:46,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:46,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 08:52:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 08:52:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:46,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:46,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:46,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:46,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:46,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:46,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:46,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:47,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:47,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 08:52:47,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-09-25 08:52:47,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:47,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 08:52:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 08:52:47,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:47,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:47,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 08:52:48,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-09-25 08:52:48,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:48,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 08:52:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 08:52:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:48,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:49,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:49,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 08:52:49,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-09-25 08:52:49,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:49,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:52:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 08:52:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:50,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:52:50,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-09-25 08:52:50,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:50,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:50,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:52:50,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:50,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 08:52:50,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:52:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-25 08:52:50,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:50,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:52:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:52:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:50,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:50,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:50,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:52:50,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:50,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 08:52:50,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:50,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:52:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:50,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:52:51,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 08:52:51,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:52:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:51,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:51,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 08:52:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:51,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 08:52:51,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:51,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 08:52:51,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:51,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:52:51,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:51,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:51,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:51,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:51,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:51,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 18 proven. 342 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-09-25 08:52:51,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938454978] [2020-09-25 08:52:51,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:51,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 08:52:51,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491135202] [2020-09-25 08:52:51,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 08:52:51,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:51,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 08:52:51,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:52:51,867 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 17 states. [2020-09-25 08:52:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:52,078 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-09-25 08:52:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 08:52:52,079 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 132 [2020-09-25 08:52:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:52,080 INFO L225 Difference]: With dead ends: 91 [2020-09-25 08:52:52,080 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 08:52:52,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-25 08:52:52,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 08:52:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-09-25 08:52:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 08:52:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-09-25 08:52:52,089 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 132 [2020-09-25 08:52:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:52,091 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-09-25 08:52:52,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 08:52:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-09-25 08:52:52,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 08:52:52,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:52,096 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:52,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:52:52,096 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:52,096 INFO L82 PathProgramCache]: Analyzing trace with hash -923497495, now seen corresponding path program 12 times [2020-09-25 08:52:52,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:52,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683171622] [2020-09-25 08:52:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 08:52:53,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-09-25 08:52:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 08:52:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:52:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 08:52:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:53,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:53,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:53,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:53,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:53,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:53,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:53,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:52:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:54,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 08:52:54,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-09-25 08:52:54,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:54,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 08:52:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 08:52:54,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:55,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 08:52:55,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:55,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-09-25 08:52:55,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:55,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:52:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 08:52:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:55,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:55,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 08:52:55,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:55,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-25 08:52:55,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:55,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 08:52:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 08:52:55,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:56,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 08:52:56,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-09-25 08:52:56,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:52:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 08:52:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:52:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-09-25 08:52:57,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:52:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 08:52:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:52:57,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 08:52:57,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:52:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:52:57,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:57,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:52:57,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-25 08:52:57,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:52:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:52:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:52:58,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 08:52:58,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:52:58,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:52:58,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 08:52:58,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:52:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:58,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 08:52:58,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:52:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:58,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:52:58,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 08:52:58,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:52:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:52:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:52:58,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 08:52:58,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:58,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:58,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:52:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:52:58,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:52:58,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:52:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 61 proven. 405 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-09-25 08:52:58,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683171622] [2020-09-25 08:52:58,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:58,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 08:52:58,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318977013] [2020-09-25 08:52:58,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 08:52:58,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:58,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 08:52:58,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:52:58,948 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 18 states. [2020-09-25 08:52:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:59,183 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2020-09-25 08:52:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 08:52:59,184 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 142 [2020-09-25 08:52:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:59,185 INFO L225 Difference]: With dead ends: 96 [2020-09-25 08:52:59,185 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 08:52:59,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-09-25 08:52:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 08:52:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-25 08:52:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 08:52:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-09-25 08:52:59,196 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 142 [2020-09-25 08:52:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:59,197 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-09-25 08:52:59,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 08:52:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-09-25 08:52:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 08:52:59,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:59,199 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:59,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 08:52:59,199 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:59,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:59,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1719700669, now seen corresponding path program 13 times [2020-09-25 08:52:59,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:59,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381131064] [2020-09-25 08:52:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 08:53:00,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1261 [2020-09-25 08:53:00,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 08:53:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:53:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 08:53:00,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:00,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:00,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:01,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:01,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 08:53:01,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:01,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-09-25 08:53:01,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:01,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:01,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 08:53:01,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-25 08:53:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 08:53:02,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-09-25 08:53:02,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 08:53:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 08:53:02,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:03,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:03,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 08:53:03,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-09-25 08:53:03,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:03,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 08:53:03,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 08:53:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-09-25 08:53:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:04,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 08:53:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 08:53:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:04,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:04,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 08:53:04,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-09-25 08:53:04,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:04,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 08:53:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:05,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:53:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-25 08:53:05,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:53:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 08:53:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:53:05,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-09-25 08:53:05,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:53:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:05,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:53:06,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 08:53:06,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:53:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 08:53:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:53:06,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 08:53:06,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 08:53:06,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:06,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:53:06,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 08:53:06,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:53:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:53:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:53:06,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 08:53:06,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:53:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:07,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:07,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:53:07,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 08:53:07,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:07,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:53:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:53:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:07,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:07,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:53:07,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 08:53:07,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:07,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:53:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:07,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:07,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:07,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:07,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:07,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:53:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 60 proven. 488 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-09-25 08:53:07,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381131064] [2020-09-25 08:53:07,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:07,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 08:53:07,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297396309] [2020-09-25 08:53:07,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 08:53:07,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:07,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 08:53:07,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:53:07,233 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 19 states. [2020-09-25 08:53:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:07,498 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-09-25 08:53:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:53:07,498 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-09-25 08:53:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:07,499 INFO L225 Difference]: With dead ends: 101 [2020-09-25 08:53:07,499 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 08:53:07,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 08:53:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 08:53:07,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-09-25 08:53:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 08:53:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-09-25 08:53:07,506 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 152 [2020-09-25 08:53:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:07,506 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-09-25 08:53:07,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 08:53:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-09-25 08:53:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 08:53:07,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:07,508 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:07,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 08:53:07,509 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:07,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1375329431, now seen corresponding path program 14 times [2020-09-25 08:53:07,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:07,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082794320] [2020-09-25 08:53:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:08,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-25 08:53:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:08,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:08,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:08,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:08,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:08,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:08,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 08:53:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-09-25 08:53:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 08:53:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-25 08:53:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:53:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking...