/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:01:25,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:01:25,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:01:25,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:01:25,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:01:25,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:01:25,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:01:25,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:01:25,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:01:25,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:01:25,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:01:25,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:01:25,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:01:25,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:01:25,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:01:25,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:01:25,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:01:25,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:01:25,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:01:25,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:01:25,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:01:25,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:01:25,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:01:25,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:01:25,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:01:25,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:01:25,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:01:25,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:01:25,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:01:25,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:01:25,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:01:25,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:01:25,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:01:25,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:01:25,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:01:25,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:01:25,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:01:25,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:01:25,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:01:25,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:01:25,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:01:25,936 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 02:01:25,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:01:25,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:01:25,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:01:25,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:01:25,969 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:01:25,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:01:25,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:01:25,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:01:25,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:01:25,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:01:25,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:01:25,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:01:25,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:01:25,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:01:25,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:01:25,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:01:25,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:01:25,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:01:25,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:01:25,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:01:25,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:01:25,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:01:25,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:01:25,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:01:25,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:01:25,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:01:25,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:01:25,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:01:25,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:01:25,974 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:01:26,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:01:26,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:01:26,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:01:26,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:01:26,458 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:01:26,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-25 02:01:26,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca39ff49/062a0652001348eaa8793a6115f058ae/FLAGe74f19b82 [2020-09-25 02:01:27,077 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:01:27,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-25 02:01:27,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca39ff49/062a0652001348eaa8793a6115f058ae/FLAGe74f19b82 [2020-09-25 02:01:27,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca39ff49/062a0652001348eaa8793a6115f058ae [2020-09-25 02:01:27,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:01:27,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:01:27,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:27,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:01:27,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:01:27,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27, skipping insertion in model container [2020-09-25 02:01:27,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:01:27,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:01:27,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:27,733 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:01:27,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:27,770 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:01:27,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27 WrapperNode [2020-09-25 02:01:27,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:27,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:01:27,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:01:27,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:01:27,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:27,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:01:27,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:01:27,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:01:27,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:01:27,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (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 02:01:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:01:27,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:01:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:01:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:01:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:01:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:01:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:01:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:01:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:01:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:01:28,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:01:28,219 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:01:28,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:28 BoogieIcfgContainer [2020-09-25 02:01:28,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:01:28,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:01:28,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:01:28,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:01:28,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:01:27" (1/3) ... [2020-09-25 02:01:28,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6d15e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:28, skipping insertion in model container [2020-09-25 02:01:28,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27" (2/3) ... [2020-09-25 02:01:28,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6d15e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:28, skipping insertion in model container [2020-09-25 02:01:28,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:28" (3/3) ... [2020-09-25 02:01:28,246 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-1.c [2020-09-25 02:01:28,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:01:28,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:01:28,313 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:01:28,346 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:01:28,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:01:28,347 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:01:28,347 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:01:28,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:01:28,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:01:28,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:01:28,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:01:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:01:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:01:28,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:28,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:28,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:28,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:01:28,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:28,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922814781] [2020-09-25 02:01:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:01:28,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 02:01:28,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:01:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 02:01:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:28,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:28,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:28,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:28,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:28,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:28,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:01:28,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:28,901 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 02:01:28,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922814781] [2020-09-25 02:01:28,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:28,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:28,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798732158] [2020-09-25 02:01:28,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:28,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:28,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:28,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:28,936 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:01:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:29,065 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:01:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:01:29,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:01:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:29,086 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:01:29,087 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:01:29,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:01:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:01:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:29,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:01:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:29,151 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:29,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:29,151 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:01:29,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:29,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:29,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:01:29,155 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:29,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:29,155 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:01:29,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:29,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908198681] [2020-09-25 02:01:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:01:29,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 02:01:29,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:01:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:29,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:29,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:29,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:29,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:29,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:29,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:01:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,487 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 02:01:29,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908198681] [2020-09-25 02:01:29,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:29,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:29,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963771613] [2020-09-25 02:01:29,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:29,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:29,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:29,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:29,492 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:01:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:29,530 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:01:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:29,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:01:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:29,533 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:01:29,533 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:29,534 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 02:01:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:01:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:29,543 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:01:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:29,544 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:29,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:29,544 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:01:29,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:29,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:29,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:01:29,546 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:29,547 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:01:29,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:29,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513366228] [2020-09-25 02:01:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:01:31,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2023 [2020-09-25 02:01:31,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:31,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:01:31,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:31,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:31,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:01:31,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 02:01:31,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:01:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:31,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:31,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:31,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:01:31,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:01:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:31,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:01:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:01:31,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513366228] [2020-09-25 02:01:31,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:31,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:01:31,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984491469] [2020-09-25 02:01:31,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:31,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:31,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:31,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:31,784 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:01:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:31,917 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:01:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:31,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:01:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:31,919 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:31,922 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:31,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:01:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:01:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:01:31,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:01:31,943 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:01:31,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:31,944 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:01:31,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:01:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:01:31,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:31,946 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 02:01:31,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:01:31,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:31,947 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:01:31,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:31,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418787905] [2020-09-25 02:01:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:33,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:01:33,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:33,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-25 02:01:33,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:33,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:33,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:33,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:33,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:33,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:33,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 02:01:33,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:33,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:33,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:33,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:33,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:01:33,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:33,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:33,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:33,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:33,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:33,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:33,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:01:33,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418787905] [2020-09-25 02:01:33,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:33,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:01:33,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530301761] [2020-09-25 02:01:33,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:33,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:33,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:33,440 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-09-25 02:01:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:33,520 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:01:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:33,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 02:01:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:33,527 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:01:33,527 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:01:33,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 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 02:01:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:01:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:01:33,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:01:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:01:33,543 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:01:33,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:33,543 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:01:33,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:33,544 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:01:33,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:01:33,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:33,548 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:33,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:01:33,548 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:33,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:33,549 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:01:33,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:33,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317045434] [2020-09-25 02:01:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:01:35,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:01:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-09-25 02:01:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:01:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:35,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:35,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:35,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:35,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:35,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:01:35,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-25 02:01:35,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:01:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:35,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:35,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:35,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:35,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:01:35,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:35,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:35,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:35,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:35,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:35,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:35,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:01:35,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317045434] [2020-09-25 02:01:35,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:35,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:01:35,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627925378] [2020-09-25 02:01:35,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:01:35,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:01:35,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:01:35,934 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 8 states. [2020-09-25 02:01:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:36,112 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2020-09-25 02:01:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:01:36,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:01:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:36,116 INFO L225 Difference]: With dead ends: 74 [2020-09-25 02:01:36,118 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:36,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:01:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:36,146 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:01:36,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:36,146 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:36,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:01:36,147 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:01:36,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:36,150 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:36,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:01:36,151 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:36,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:36,153 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:01:36,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:36,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555272537] [2020-09-25 02:01:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:01:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:01:41,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:41,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:41,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:41,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:41,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:42,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:42,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-09-25 02:01:42,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:43,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:43,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 02:01:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:01:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:43,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:43,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:43,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:01:43,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:43,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:43,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:43,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:43,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:43,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:43,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:43,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:43,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:43,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:43,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:01:43,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555272537] [2020-09-25 02:01:43,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:43,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:43,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83007207] [2020-09-25 02:01:43,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:43,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:43,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:43,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:43,363 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 02:01:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:43,489 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2020-09-25 02:01:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:01:43,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 02:01:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:43,492 INFO L225 Difference]: With dead ends: 60 [2020-09-25 02:01:43,496 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 02:01:43,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:43,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 02:01:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-09-25 02:01:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 02:01:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-09-25 02:01:43,515 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 52 [2020-09-25 02:01:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:43,516 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-09-25 02:01:43,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-09-25 02:01:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 02:01:43,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:43,522 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:43,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:01:43,524 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1108116753, now seen corresponding path program 3 times [2020-09-25 02:01:43,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:43,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060921210] [2020-09-25 02:01:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:43,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:48,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 02:01:48,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 02:01:48,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 02:01:48,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:01:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:48,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:48,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:53,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 02:01:53,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 02:01:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 02:01:53,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:01:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:01:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:54,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:01:54,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-09-25 02:01:54,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:01:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:54,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:54,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 02:01:54,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:54,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:54,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:54,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 02:01:54,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:54,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:54,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:54,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:54,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:54,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:54,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:54,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:54,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:54,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:54,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:01:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:54,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:55,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:55,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:59,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:01:59,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:01:59,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:01:59,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 02:01:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:59,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:01,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:02:01,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1287 [2020-09-25 02:02:01,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:01,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:01,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:01,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:01,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:01,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:01,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:01,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:01,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:01,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:01,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:01,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:01,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:01,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:01,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:02:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:01,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 74 proven. 150 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-09-25 02:02:01,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060921210] [2020-09-25 02:02:01,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:01,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:02:01,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072111326] [2020-09-25 02:02:01,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:02:01,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:01,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:02:01,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:02:01,332 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 10 states. [2020-09-25 02:02:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:01,470 INFO L93 Difference]: Finished difference Result 91 states and 123 transitions. [2020-09-25 02:02:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:02:01,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2020-09-25 02:02:01,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:01,472 INFO L225 Difference]: With dead ends: 91 [2020-09-25 02:02:01,472 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 02:02:01,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:02:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 02:02:01,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-25 02:02:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 02:02:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 02:02:01,483 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 121 [2020-09-25 02:02:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:01,483 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 02:02:01,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:02:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 02:02:01,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:02:01,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:01,485 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:01,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:02:01,485 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:01,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:02:01,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:01,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390433119] [2020-09-25 02:02:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:06,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:02:06,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:02:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:02:06,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:02:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:06,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:06,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:06,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:06,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:06,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:02:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 02:02:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 02:02:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 02:02:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:02:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:11,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:11,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:11,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:02:11,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:11,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:11,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:11,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:11,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:11,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:11,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:11,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:11,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:11,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:11,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:11,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:11,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:11,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:11,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:11,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:11,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:11,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:11,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:02:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:14,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:14,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:02:14,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:14,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2850 [2020-09-25 02:02:14,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:02:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:14,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:17,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:02:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3316 [2020-09-25 02:02:17,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:02:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:18,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:18,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 02:02:18,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:18,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:18,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:18,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:18,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:18,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:02:18,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:18,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:18,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:18,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:18,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:18,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:02:18,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:18,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:18,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:18,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:18,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:02:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:18,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:18,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:02:18,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:18,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 240 proven. 38 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-09-25 02:02:18,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390433119] [2020-09-25 02:02:18,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:18,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:02:18,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283967195] [2020-09-25 02:02:18,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:02:18,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:18,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:02:18,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:02:18,314 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 11 states. [2020-09-25 02:02:18,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:18,539 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2020-09-25 02:02:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:02:18,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-09-25 02:02:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:18,542 INFO L225 Difference]: With dead ends: 103 [2020-09-25 02:02:18,542 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 02:02:18,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:02:18,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 02:02:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-25 02:02:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:02:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-09-25 02:02:18,551 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 123 [2020-09-25 02:02:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:18,552 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-09-25 02:02:18,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:02:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-09-25 02:02:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:02:18,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:18,555 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:18,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:02:18,556 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 02:02:18,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:18,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689241093] [2020-09-25 02:02:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking...