/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:37:48,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:37:48,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:37:48,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:37:48,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:37:48,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:37:48,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:37:48,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:37:48,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:37:48,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:37:48,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:37:48,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:37:48,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:37:48,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:37:48,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:37:48,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:37:48,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:37:48,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:37:48,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:37:48,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:37:48,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:37:48,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:37:48,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:37:48,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:37:48,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:37:48,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:37:48,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:37:48,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:37:48,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:37:48,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:37:48,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:37:48,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:37:48,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:37:48,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:37:48,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:37:48,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:37:48,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:37:48,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:37:48,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:37:48,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:37:48,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:37:48,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:37:48,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:37:48,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:37:48,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:37:48,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:37:48,937 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:37:48,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:37:48,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:37:48,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:37:48,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:37:48,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:37:48,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:37:48,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:37:48,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:37:48,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:37:48,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:37:48,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:37:48,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:37:48,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:37:48,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:37:48,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:37:48,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:37:48,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:37:48,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:37:48,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:37:48,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:37:48,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:37:48,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:37:48,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:37:48,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:37:48,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:37:49,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:37:49,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:37:49,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:37:49,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:37:49,453 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:37:49,454 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2020-09-25 06:37:49,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fd87e66c/9a95c56712454f65af38331046ee8967/FLAG4ba07e768 [2020-09-25 06:37:50,064 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:37:50,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2020-09-25 06:37:50,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fd87e66c/9a95c56712454f65af38331046ee8967/FLAG4ba07e768 [2020-09-25 06:37:50,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fd87e66c/9a95c56712454f65af38331046ee8967 [2020-09-25 06:37:50,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:37:50,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:37:50,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:37:50,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:37:50,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:37:50,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fff5522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50, skipping insertion in model container [2020-09-25 06:37:50,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:37:50,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:37:50,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:37:50,728 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:37:50,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:37:50,767 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:37:50,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50 WrapperNode [2020-09-25 06:37:50,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:37:50,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:37:50,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:37:50,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:37:50,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (1/1) ... [2020-09-25 06:37:50,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:37:50,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:37:50,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:37:50,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:37:50,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:37:50,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:37:50,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:37:50,951 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 06:37:50,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:37:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:37:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 06:37:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:37:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:37:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:37:51,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:37:51,157 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:37:51,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:37:51 BoogieIcfgContainer [2020-09-25 06:37:51,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:37:51,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:37:51,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:37:51,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:37:51,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:37:50" (1/3) ... [2020-09-25 06:37:51,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd6891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:37:51, skipping insertion in model container [2020-09-25 06:37:51,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:50" (2/3) ... [2020-09-25 06:37:51,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd6891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:37:51, skipping insertion in model container [2020-09-25 06:37:51,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:37:51" (3/3) ... [2020-09-25 06:37:51,172 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2020-09-25 06:37:51,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:37:51,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:37:51,212 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:37:51,242 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:37:51,242 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:37:51,243 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:37:51,243 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:37:51,243 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:37:51,244 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:37:51,244 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:37:51,244 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:37:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 06:37:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 06:37:51,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:51,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:51,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:51,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:51,281 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 06:37:51,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:51,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517461621] [2020-09-25 06:37:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:51,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:37:51,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-25 06:37:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:51,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:37:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:51,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:37:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:51,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:37:51,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:51,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:51,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:51,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:37:51,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:51,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:37:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:51,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:37:52,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517461621] [2020-09-25 06:37:52,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:37:52,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:37:52,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912178192] [2020-09-25 06:37:52,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:37:52,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:52,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:37:52,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:37:52,048 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 06:37:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:52,172 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 06:37:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:37:52,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 06:37:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:52,188 INFO L225 Difference]: With dead ends: 39 [2020-09-25 06:37:52,188 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 06:37:52,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:37:52,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 06:37:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 06:37:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 06:37:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 06:37:52,248 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 06:37:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:52,249 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 06:37:52,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:37:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 06:37:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 06:37:52,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:52,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:52,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:37:52,253 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:52,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:52,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 06:37:52,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:52,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012176817] [2020-09-25 06:37:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:52,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 06:37:52,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-25 06:37:52,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:52,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:37:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:37:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:52,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:52,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:52,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:37:52,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:52,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:52,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:52,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:52,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:52,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:52,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:52,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 06:37:52,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:52,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:52,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:37:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-09-25 06:37:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:52,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:52,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:52,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:37:52,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:52,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:52,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 06:37:52,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012176817] [2020-09-25 06:37:52,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:52,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:37:52,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827488249] [2020-09-25 06:37:52,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:37:52,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:37:52,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:37:52,894 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-09-25 06:37:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:52,955 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 06:37:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:37:52,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 06:37:52,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:52,957 INFO L225 Difference]: With dead ends: 36 [2020-09-25 06:37:52,957 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 06:37:52,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 06:37:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 06:37:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 06:37:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 06:37:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 06:37:52,967 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 06:37:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:52,967 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 06:37:52,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:37:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 06:37:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 06:37:52,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:52,969 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:52,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:37:52,970 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:52,971 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 06:37:52,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:52,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313971526] [2020-09-25 06:37:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:53,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:53,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:37:53,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-25 06:37:53,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:53,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:53,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:53,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:53,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:53,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:53,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:53,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:53,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:53,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:53,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:53,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 06:37:53,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:53,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:37:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:53,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:53,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:53,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:37:53,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:53,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:53,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:37:53,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:53,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 06:37:53,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313971526] [2020-09-25 06:37:53,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:53,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:37:53,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149740826] [2020-09-25 06:37:53,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:37:53,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:53,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:37:53,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:37:53,767 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 06:37:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:53,872 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 06:37:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:37:53,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 06:37:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:53,874 INFO L225 Difference]: With dead ends: 41 [2020-09-25 06:37:53,874 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 06:37:53,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:37:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 06:37:53,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 06:37:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 06:37:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 06:37:53,884 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 06:37:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:53,884 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 06:37:53,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:37:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 06:37:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 06:37:53,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:53,886 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:53,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:37:53,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:53,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 06:37:53,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:53,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731400696] [2020-09-25 06:37:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:54,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:54,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:37:54,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-09-25 06:37:54,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:54,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:54,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:54,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:54,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:54,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:54,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:54,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:54,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:54,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:54,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:37:55,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:55,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 06:37:55,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 06:37:55,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:55,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:55,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:55,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 06:37:55,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:37:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 06:37:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:55,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:55,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:55,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:37:55,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:55,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 06:37:55,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731400696] [2020-09-25 06:37:55,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:55,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:37:55,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328733219] [2020-09-25 06:37:55,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:37:55,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:55,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:37:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:37:55,349 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 06:37:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:55,437 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 06:37:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:37:55,437 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 06:37:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:55,439 INFO L225 Difference]: With dead ends: 46 [2020-09-25 06:37:55,439 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 06:37:55,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:37:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 06:37:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 06:37:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 06:37:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 06:37:55,447 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 06:37:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:55,448 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 06:37:55,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:37:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 06:37:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 06:37:55,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:55,449 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:55,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:37:55,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:55,450 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 06:37:55,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:55,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918147600] [2020-09-25 06:37:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:37:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-09-25 06:37:56,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:37:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:37:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:56,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:56,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:56,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:56,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:37:56,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 06:37:56,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:37:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:37:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:56,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:37:57,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 06:37:57,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:37:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:37:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:57,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:57,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 06:37:57,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:37:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 06:37:57,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:57,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:57,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:37:57,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 06:37:57,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918147600] [2020-09-25 06:37:57,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:57,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:37:57,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421777093] [2020-09-25 06:37:57,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:37:57,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:57,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:37:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:37:57,394 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-25 06:37:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:57,533 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 06:37:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:37:57,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-25 06:37:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:57,536 INFO L225 Difference]: With dead ends: 51 [2020-09-25 06:37:57,536 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 06:37:57,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:37:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 06:37:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 06:37:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 06:37:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 06:37:57,549 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 06:37:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:57,549 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 06:37:57,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:37:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 06:37:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:37:57,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:57,551 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:57,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:37:57,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:57,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:57,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 06:37:57,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:57,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152083499] [2020-09-25 06:37:57,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:37:59,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1738 [2020-09-25 06:37:59,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:37:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:37:59,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:59,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:59,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:59,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:37:59,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:59,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-25 06:37:59,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:37:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 06:37:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:37:59,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 06:37:59,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:37:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:37:59,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:00,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 06:38:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 06:38:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:00,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:38:00,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:00,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:38:00,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:00,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-25 06:38:00,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152083499] [2020-09-25 06:38:00,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:00,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:38:00,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601857119] [2020-09-25 06:38:00,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:38:00,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:00,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:38:00,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:38:00,454 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 06:38:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:00,598 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 06:38:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:38:00,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 06:38:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:00,600 INFO L225 Difference]: With dead ends: 56 [2020-09-25 06:38:00,600 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 06:38:00,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:38:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 06:38:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 06:38:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:38:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 06:38:00,609 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 06:38:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:00,610 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 06:38:00,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:38:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 06:38:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 06:38:00,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:00,612 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:00,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:38:00,613 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 06:38:00,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:00,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080667510] [2020-09-25 06:38:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 06:38:02,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1832 [2020-09-25 06:38:02,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:38:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:38:02,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:02,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:02,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:02,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:02,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:02,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:02,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:02,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 06:38:02,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:38:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 06:38:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:03,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 06:38:03,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:03,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 06:38:03,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:03,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:03,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 06:38:03,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:03,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 06:38:03,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:03,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:38:03,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:03,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:38:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 21 proven. 94 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 06:38:03,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080667510] [2020-09-25 06:38:03,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:03,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:38:03,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115415829] [2020-09-25 06:38:03,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:38:03,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:03,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:38:03,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:38:03,896 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 06:38:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:04,044 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 06:38:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:38:04,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 06:38:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:04,046 INFO L225 Difference]: With dead ends: 61 [2020-09-25 06:38:04,046 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 06:38:04,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:38:04,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 06:38:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 06:38:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 06:38:04,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 06:38:04,060 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 06:38:04,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:04,061 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 06:38:04,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:38:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 06:38:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 06:38:04,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:04,066 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:04,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:38:04,066 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 06:38:04,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:04,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938969246] [2020-09-25 06:38:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:06,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:06,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:38:06,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1935 [2020-09-25 06:38:06,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:06,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:38:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:38:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:06,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:06,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:06,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:06,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:06,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:06,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:06,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:06,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:06,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 06:38:06,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:06,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:38:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 06:38:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:06,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:06,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:06,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:06,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 06:38:06,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:06,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:06,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:06,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:06,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:07,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 06:38:07,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:07,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:07,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 06:38:07,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:07,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 06:38:07,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:07,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 06:38:07,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:07,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:07,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:38:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:07,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:38:07,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:07,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 24 proven. 137 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 06:38:08,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938969246] [2020-09-25 06:38:08,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:08,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:38:08,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338107998] [2020-09-25 06:38:08,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:38:08,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:08,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:38:08,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:38:08,043 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 06:38:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:08,240 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 06:38:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:38:08,240 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 06:38:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:08,242 INFO L225 Difference]: With dead ends: 66 [2020-09-25 06:38:08,242 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 06:38:08,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:38:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 06:38:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 06:38:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 06:38:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 06:38:08,256 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 06:38:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:08,256 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 06:38:08,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:38:08,256 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 06:38:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 06:38:08,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:08,262 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:08,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:38:08,262 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:08,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 06:38:08,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:08,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366044959] [2020-09-25 06:38:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:08,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:08,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:11,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:11,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 06:38:11,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:11,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3334 [2020-09-25 06:38:11,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:11,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 06:38:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:38:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:11,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:11,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:11,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:38:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:11,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:11,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:12,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:12,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:12,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:12,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-25 06:38:12,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:12,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:12,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 06:38:12,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:12,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 06:38:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:12,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:12,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:12,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:12,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:12,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-25 06:38:12,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:12,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:12,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:13,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 06:38:13,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:13,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 06:38:13,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:13,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 06:38:13,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:13,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 06:38:13,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:13,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 06:38:13,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:13,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:13,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:38:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:38:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:14,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 30 proven. 177 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 06:38:14,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366044959] [2020-09-25 06:38:14,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:14,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 06:38:14,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642246432] [2020-09-25 06:38:14,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 06:38:14,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:14,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 06:38:14,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:38:14,064 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 06:38:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:14,235 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 06:38:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:38:14,236 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 06:38:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:14,238 INFO L225 Difference]: With dead ends: 71 [2020-09-25 06:38:14,241 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 06:38:14,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:38:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 06:38:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 06:38:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 06:38:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 06:38:14,262 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 06:38:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:14,262 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 06:38:14,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 06:38:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 06:38:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 06:38:14,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:14,264 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:14,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:38:14,264 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:14,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:14,264 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 06:38:14,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:14,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773942803] [2020-09-25 06:38:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:16,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:16,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 06:38:16,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2002 [2020-09-25 06:38:16,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:16,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:38:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 06:38:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:16,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:16,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:16,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:16,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:16,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:16,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:16,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:16,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:16,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:38:16,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-25 06:38:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:16,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:38:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 06:38:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:17,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:17,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:17,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:17,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 06:38:17,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:17,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:17,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:38:17,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:17,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:38:17,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:17,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:17,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:17,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:17,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 06:38:17,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:17,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:17,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:18,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:18,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:18,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-25 06:38:18,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:18,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:18,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:18,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 06:38:18,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:18,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:18,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:18,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:18,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 06:38:18,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:18,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:18,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:18,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:18,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:18,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:18,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 06:38:18,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:18,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:19,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:19,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:19,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 06:38:19,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:19,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:19,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:19,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:38:19,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:19,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:19,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:19,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:19,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:38:19,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:19,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 24 proven. 244 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-25 06:38:19,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773942803] [2020-09-25 06:38:19,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:19,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:38:19,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527312404] [2020-09-25 06:38:19,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:38:19,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:19,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:38:19,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:38:19,183 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 06:38:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:19,338 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 06:38:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:38:19,338 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 06:38:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:19,343 INFO L225 Difference]: With dead ends: 76 [2020-09-25 06:38:19,344 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 06:38:19,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:38:19,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 06:38:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 06:38:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 06:38:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 06:38:19,358 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 06:38:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:19,359 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 06:38:19,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:38:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 06:38:19,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 06:38:19,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:19,363 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:19,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:38:19,364 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:19,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:19,364 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 06:38:19,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:19,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578904356] [2020-09-25 06:38:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 06:38:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:38:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:24,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-09-25 06:38:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 06:38:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:24,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:24,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:24,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:24,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:38:24,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:24,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:24,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:25,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 06:38:28,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3567 [2020-09-25 06:38:28,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-09-25 06:38:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 06:38:28,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:28,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:29,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:29,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:38:29,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-09-25 06:38:29,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:29,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-09-25 06:38:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:38:29,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:29,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:30,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:30,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:30,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-09-25 06:38:30,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:30,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-09-25 06:38:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:38:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:31,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:31,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:31,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-09-25 06:38:31,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:31,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-09-25 06:38:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:31,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-25 06:38:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:32,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 06:38:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:32,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:32,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:32,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:32,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-25 06:38:32,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:32,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 06:38:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:32,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:33,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-25 06:38:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 06:38:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:33,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 06:38:33,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:38:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:33,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 06:38:33,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:34,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 06:38:34,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:34,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:38:34,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:38:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:34,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 20 proven. 254 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-09-25 06:38:34,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578904356] [2020-09-25 06:38:34,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:34,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 06:38:34,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193864053] [2020-09-25 06:38:34,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 06:38:34,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:34,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 06:38:34,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-09-25 06:38:34,503 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-25 06:38:37,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:37,002 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 06:38:37,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-25 06:38:37,003 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2020-09-25 06:38:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:37,004 INFO L225 Difference]: With dead ends: 81 [2020-09-25 06:38:37,004 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 06:38:37,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=367, Invalid=4055, Unknown=0, NotChecked=0, Total=4422 [2020-09-25 06:38:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 06:38:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 06:38:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 06:38:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 06:38:37,017 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 06:38:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:37,018 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 06:38:37,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-25 06:38:37,018 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 06:38:37,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 06:38:37,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:37,019 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:37,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:38:37,020 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 06:38:37,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:37,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67824315] [2020-09-25 06:38:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking...