/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:07:31,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:07:31,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:07:31,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:07:31,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:07:31,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:07:31,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:07:31,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:07:31,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:07:31,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:07:31,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:07:31,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:07:31,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:07:31,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:07:31,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:07:31,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:07:31,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:07:31,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:07:31,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:07:31,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:07:31,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:07:31,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:07:31,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:07:31,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:07:31,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:07:31,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:07:31,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:07:31,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:07:31,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:07:31,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:07:31,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:07:31,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:07:31,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:07:31,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:07:31,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:07:31,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:07:31,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:07:31,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:07:31,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:07:31,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:07:31,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:07:31,761 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 [2020-10-13 08:07:31,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:07:31,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:07:31,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:07:31,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:07:31,804 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:07:31,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:07:31,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:07:31,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:07:31,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:07:31,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:07:31,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:07:31,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:07:31,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:07:31,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:07:31,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:07:31,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:07:31,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:07:31,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:07:31,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:07:31,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:07:31,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:07:31,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:07:31,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:07:31,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:07:31,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:07:31,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:07:31,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:07:31,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:07:31,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:07:31,810 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:07:32,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:07:32,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:07:32,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:07:32,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:07:32,132 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:07:32,133 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25.c [2020-10-13 08:07:32,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2741d0ce/5bc2265206214e6f9b425e3805666acd/FLAG51425ad09 [2020-10-13 08:07:32,798 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:07:32,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label25.c [2020-10-13 08:07:32,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2741d0ce/5bc2265206214e6f9b425e3805666acd/FLAG51425ad09 [2020-10-13 08:07:32,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2741d0ce/5bc2265206214e6f9b425e3805666acd [2020-10-13 08:07:32,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:07:32,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:07:32,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:07:32,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:07:32,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:07:32,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:32" (1/1) ... [2020-10-13 08:07:32,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b33d7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:32, skipping insertion in model container [2020-10-13 08:07:32,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:32" (1/1) ... [2020-10-13 08:07:32,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:07:33,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:07:33,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:07:33,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:07:34,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:07:34,033 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:07:34,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34 WrapperNode [2020-10-13 08:07:34,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:07:34,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:07:34,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:07:34,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:07:34,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2020-10-13 08:07:34,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2020-10-13 08:07:34,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2020-10-13 08:07:34,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2020-10-13 08:07:34,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2020-10-13 08:07:34,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2020-10-13 08:07:34,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2020-10-13 08:07:34,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:07:34,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:07:34,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:07:34,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:07:34,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (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 [2020-10-13 08:07:34,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:07:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:07:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:07:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:07:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:07:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:07:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:07:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:07:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:07:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:07:34,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:07:35,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:07:35,940 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:07:35,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:35 BoogieIcfgContainer [2020-10-13 08:07:35,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:07:35,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:07:35,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:07:35,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:07:35,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:07:32" (1/3) ... [2020-10-13 08:07:35,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d97182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:35, skipping insertion in model container [2020-10-13 08:07:35,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (2/3) ... [2020-10-13 08:07:35,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d97182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:35, skipping insertion in model container [2020-10-13 08:07:35,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:35" (3/3) ... [2020-10-13 08:07:35,957 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2020-10-13 08:07:35,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:07:35,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:07:35,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:07:36,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:07:36,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:07:36,031 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:07:36,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:07:36,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:07:36,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:07:36,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:07:36,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:07:36,063 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-13 08:07:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 08:07:36,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:36,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:36,075 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:36,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1539824594, now seen corresponding path program 1 times [2020-10-13 08:07:36,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:36,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780360336] [2020-10-13 08:07:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:36,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 08:07:36,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-13 08:07:36,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:07:36,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:07:36,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:07:36,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:07:36,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:36,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:36,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:36,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:36,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:07:36,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:07:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:36,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780360336] [2020-10-13 08:07:36,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:07:36,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:07:36,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131349431] [2020-10-13 08:07:36,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:07:36,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:36,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:07:36,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:07:36,977 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-13 08:07:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:39,330 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-13 08:07:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:39,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-13 08:07:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:39,351 INFO L225 Difference]: With dead ends: 791 [2020-10-13 08:07:39,351 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 08:07:39,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 08:07:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-13 08:07:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-13 08:07:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-13 08:07:39,443 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 37 [2020-10-13 08:07:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:39,444 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-13 08:07:39,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:07:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-13 08:07:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 08:07:39,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:39,451 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:39,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:07:39,452 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1804759410, now seen corresponding path program 1 times [2020-10-13 08:07:39,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:39,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280625798] [2020-10-13 08:07:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:39,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:40,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:07:40,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-13 08:07:40,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:07:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 08:07:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:41,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:41,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:41,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:07:41,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:41,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:41,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:41,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:07:41,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:07:41,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:07:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:07:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:41,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280625798] [2020-10-13 08:07:41,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:41,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:41,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777391302] [2020-10-13 08:07:41,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:41,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:41,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:41,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:41,387 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 5 states. [2020-10-13 08:07:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:42,979 INFO L93 Difference]: Finished difference Result 879 states and 1263 transitions. [2020-10-13 08:07:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:42,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 08:07:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:42,986 INFO L225 Difference]: With dead ends: 879 [2020-10-13 08:07:42,986 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 08:07:42,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 08:07:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-13 08:07:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-13 08:07:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 616 transitions. [2020-10-13 08:07:43,021 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 616 transitions. Word has length 109 [2020-10-13 08:07:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:43,021 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 616 transitions. [2020-10-13 08:07:43,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 616 transitions. [2020-10-13 08:07:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 08:07:43,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:43,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:43,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:07:43,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:43,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1442270559, now seen corresponding path program 1 times [2020-10-13 08:07:43,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:43,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818519062] [2020-10-13 08:07:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:44,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:07:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-10-13 08:07:44,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:07:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:07:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:44,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:44,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:44,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:44,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:07:44,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:44,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:44,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:44,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:44,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:44,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:44,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:07:44,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:07:44,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:07:44,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:44,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818519062] [2020-10-13 08:07:44,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:44,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:44,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528849391] [2020-10-13 08:07:44,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:44,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:44,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:44,292 INFO L87 Difference]: Start difference. First operand 430 states and 616 transitions. Second operand 5 states. [2020-10-13 08:07:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:46,417 INFO L93 Difference]: Finished difference Result 1258 states and 1826 transitions. [2020-10-13 08:07:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:46,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 08:07:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:46,423 INFO L225 Difference]: With dead ends: 1258 [2020-10-13 08:07:46,424 INFO L226 Difference]: Without dead ends: 834 [2020-10-13 08:07:46,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-13 08:07:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 818. [2020-10-13 08:07:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-10-13 08:07:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1094 transitions. [2020-10-13 08:07:46,468 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1094 transitions. Word has length 110 [2020-10-13 08:07:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:46,469 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1094 transitions. [2020-10-13 08:07:46,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1094 transitions. [2020-10-13 08:07:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 08:07:46,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:46,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:46,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:07:46,472 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:46,473 INFO L82 PathProgramCache]: Analyzing trace with hash -708995498, now seen corresponding path program 1 times [2020-10-13 08:07:46,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:46,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001791566] [2020-10-13 08:07:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:47,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:07:47,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-10-13 08:07:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:07:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 08:07:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:47,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:47,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:47,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:47,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:07:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:47,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:47,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:07:47,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:07:47,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:07:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:47,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001791566] [2020-10-13 08:07:47,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:47,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:47,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793754831] [2020-10-13 08:07:47,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:47,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:47,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:47,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:47,964 INFO L87 Difference]: Start difference. First operand 818 states and 1094 transitions. Second operand 5 states. [2020-10-13 08:07:49,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:49,618 INFO L93 Difference]: Finished difference Result 1647 states and 2213 transitions. [2020-10-13 08:07:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:49,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 08:07:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:49,627 INFO L225 Difference]: With dead ends: 1647 [2020-10-13 08:07:49,627 INFO L226 Difference]: Without dead ends: 826 [2020-10-13 08:07:49,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-10-13 08:07:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 818. [2020-10-13 08:07:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-10-13 08:07:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1090 transitions. [2020-10-13 08:07:49,678 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1090 transitions. Word has length 111 [2020-10-13 08:07:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:49,679 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1090 transitions. [2020-10-13 08:07:49,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1090 transitions. [2020-10-13 08:07:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 08:07:49,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:49,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:49,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:07:49,692 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:49,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:49,693 INFO L82 PathProgramCache]: Analyzing trace with hash -60582654, now seen corresponding path program 1 times [2020-10-13 08:07:49,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:49,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721235190] [2020-10-13 08:07:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:50,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:51,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:07:51,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:07:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-13 08:07:51,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:07:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:07:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:51,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:51,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:51,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:51,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:51,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:07:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:07:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:07:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:51,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721235190] [2020-10-13 08:07:51,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:51,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:51,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769824979] [2020-10-13 08:07:51,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:51,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:51,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:51,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:51,513 INFO L87 Difference]: Start difference. First operand 818 states and 1090 transitions. Second operand 5 states. [2020-10-13 08:07:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:53,164 INFO L93 Difference]: Finished difference Result 1655 states and 2213 transitions. [2020-10-13 08:07:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:53,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 08:07:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:53,174 INFO L225 Difference]: With dead ends: 1655 [2020-10-13 08:07:53,174 INFO L226 Difference]: Without dead ends: 826 [2020-10-13 08:07:53,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-10-13 08:07:53,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 818. [2020-10-13 08:07:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-10-13 08:07:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1084 transitions. [2020-10-13 08:07:53,215 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1084 transitions. Word has length 117 [2020-10-13 08:07:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:53,215 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1084 transitions. [2020-10-13 08:07:53,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1084 transitions. [2020-10-13 08:07:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 08:07:53,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:53,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:53,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:07:53,218 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:53,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash -231426358, now seen corresponding path program 1 times [2020-10-13 08:07:53,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:53,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972318065] [2020-10-13 08:07:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:54,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:54,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:07:54,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:54,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-10-13 08:07:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 08:07:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:07:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:54,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:54,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:54,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:54,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:07:54,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:54,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:54,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:54,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 08:07:54,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:07:54,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:07:54,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:54,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972318065] [2020-10-13 08:07:54,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:54,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:54,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247367505] [2020-10-13 08:07:54,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:54,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:54,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:54,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:54,607 INFO L87 Difference]: Start difference. First operand 818 states and 1084 transitions. Second operand 5 states. [2020-10-13 08:07:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:56,185 INFO L93 Difference]: Finished difference Result 1653 states and 2197 transitions. [2020-10-13 08:07:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:56,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 08:07:56,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:56,197 INFO L225 Difference]: With dead ends: 1653 [2020-10-13 08:07:56,197 INFO L226 Difference]: Without dead ends: 826 [2020-10-13 08:07:56,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-10-13 08:07:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 818. [2020-10-13 08:07:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-10-13 08:07:56,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1082 transitions. [2020-10-13 08:07:56,226 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1082 transitions. Word has length 121 [2020-10-13 08:07:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:56,227 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1082 transitions. [2020-10-13 08:07:56,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:56,227 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1082 transitions. [2020-10-13 08:07:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 08:07:56,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:56,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:56,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:07:56,229 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:56,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:56,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1365404590, now seen corresponding path program 1 times [2020-10-13 08:07:56,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:56,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925851749] [2020-10-13 08:07:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:56,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:56,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:56,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:56,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 08:07:56,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-13 08:07:56,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:07:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:07:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:56,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:56,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:07:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:07:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 08:07:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:07:57,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:07:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:57,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925851749] [2020-10-13 08:07:57,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:57,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:57,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358399118] [2020-10-13 08:07:57,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:57,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:57,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:57,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:57,142 INFO L87 Difference]: Start difference. First operand 818 states and 1082 transitions. Second operand 5 states. [2020-10-13 08:07:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:59,354 INFO L93 Difference]: Finished difference Result 2034 states and 2763 transitions. [2020-10-13 08:07:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:59,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 08:07:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:59,366 INFO L225 Difference]: With dead ends: 2034 [2020-10-13 08:07:59,366 INFO L226 Difference]: Without dead ends: 1222 [2020-10-13 08:07:59,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-10-13 08:07:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1204. [2020-10-13 08:07:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-10-13 08:07:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1560 transitions. [2020-10-13 08:07:59,408 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1560 transitions. Word has length 123 [2020-10-13 08:07:59,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:59,408 INFO L479 AbstractCegarLoop]: Abstraction has 1204 states and 1560 transitions. [2020-10-13 08:07:59,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:59,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1560 transitions. [2020-10-13 08:07:59,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 08:07:59,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:59,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:59,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:07:59,411 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:59,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:59,411 INFO L82 PathProgramCache]: Analyzing trace with hash 597307198, now seen corresponding path program 1 times [2020-10-13 08:07:59,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:59,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505429553] [2020-10-13 08:07:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:59,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:59,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:07:59,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:59,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-13 08:07:59,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:59,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:07:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:07:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:07:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:59,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:59,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:59,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:59,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:07:59,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:07:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:00,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:00,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:00,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:00,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 08:08:00,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:08:00,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505429553] [2020-10-13 08:08:00,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:08:00,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:08:00,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507755453] [2020-10-13 08:08:00,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:00,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:00,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:00,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:00,252 INFO L87 Difference]: Start difference. First operand 1204 states and 1560 transitions. Second operand 7 states. [2020-10-13 08:08:02,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:02,595 INFO L93 Difference]: Finished difference Result 2832 states and 3685 transitions. [2020-10-13 08:08:02,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:02,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-13 08:08:02,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:02,607 INFO L225 Difference]: With dead ends: 2832 [2020-10-13 08:08:02,607 INFO L226 Difference]: Without dead ends: 1634 [2020-10-13 08:08:02,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-10-13 08:08:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1609. [2020-10-13 08:08:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2020-10-13 08:08:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2012 transitions. [2020-10-13 08:08:02,661 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2012 transitions. Word has length 131 [2020-10-13 08:08:02,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:02,662 INFO L479 AbstractCegarLoop]: Abstraction has 1609 states and 2012 transitions. [2020-10-13 08:08:02,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:02,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2012 transitions. [2020-10-13 08:08:02,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-13 08:08:02,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:02,666 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:02,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:08:02,666 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:02,667 INFO L82 PathProgramCache]: Analyzing trace with hash -378943164, now seen corresponding path program 1 times [2020-10-13 08:08:02,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:02,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289132029] [2020-10-13 08:08:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:02,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:03,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:03,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-13 08:08:03,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-13 08:08:03,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:08:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:08:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:04,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:04,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:04,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:04,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:04,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:08:04,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:04,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:04,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:04,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:08:04,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 08:08:04,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:08:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:08:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:04,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:04,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-13 08:08:04,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:08:04,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289132029] [2020-10-13 08:08:04,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:04,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:04,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29553268] [2020-10-13 08:08:04,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:04,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:04,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:04,944 INFO L87 Difference]: Start difference. First operand 1609 states and 2012 transitions. Second operand 7 states. [2020-10-13 08:08:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:08,232 INFO L93 Difference]: Finished difference Result 3678 states and 4800 transitions. [2020-10-13 08:08:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:08:08,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-13 08:08:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:08,246 INFO L225 Difference]: With dead ends: 3678 [2020-10-13 08:08:08,247 INFO L226 Difference]: Without dead ends: 2075 [2020-10-13 08:08:08,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:08:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2020-10-13 08:08:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2016. [2020-10-13 08:08:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2016 states. [2020-10-13 08:08:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2472 transitions. [2020-10-13 08:08:08,322 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2472 transitions. Word has length 247 [2020-10-13 08:08:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:08,323 INFO L479 AbstractCegarLoop]: Abstraction has 2016 states and 2472 transitions. [2020-10-13 08:08:08,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:08,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2472 transitions. [2020-10-13 08:08:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-13 08:08:08,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:08,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:08,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:08:08,329 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:08,329 INFO L82 PathProgramCache]: Analyzing trace with hash 355108536, now seen corresponding path program 1 times [2020-10-13 08:08:08,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:08,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684689578] [2020-10-13 08:08:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:08,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:09,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:09,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:08:09,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:09,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-10-13 08:08:09,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 08:08:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:08:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:09,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:09,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:09,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:08:09,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:09,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:10,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:08:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 08:08:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 08:08:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:10,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:08:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:10,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:10,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:10,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 08:08:10,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:08:10,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684689578] [2020-10-13 08:08:10,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:10,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:10,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386684207] [2020-10-13 08:08:10,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:10,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:10,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:10,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:10,727 INFO L87 Difference]: Start difference. First operand 2016 states and 2472 transitions. Second operand 7 states. [2020-10-13 08:08:13,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:13,101 INFO L93 Difference]: Finished difference Result 5425 states and 6858 transitions. [2020-10-13 08:08:13,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:13,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-13 08:08:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:13,118 INFO L225 Difference]: With dead ends: 5425 [2020-10-13 08:08:13,119 INFO L226 Difference]: Without dead ends: 3415 [2020-10-13 08:08:13,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2020-10-13 08:08:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 3197. [2020-10-13 08:08:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-10-13 08:08:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 3870 transitions. [2020-10-13 08:08:13,207 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 3870 transitions. Word has length 257 [2020-10-13 08:08:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:13,208 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 3870 transitions. [2020-10-13 08:08:13,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 3870 transitions. [2020-10-13 08:08:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-13 08:08:13,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:13,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:13,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:08:13,215 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:13,215 INFO L82 PathProgramCache]: Analyzing trace with hash 476506185, now seen corresponding path program 1 times [2020-10-13 08:08:13,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:13,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933845551] [2020-10-13 08:08:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:13,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:13,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:14,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:14,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:08:14,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:14,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-13 08:08:14,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-13 08:08:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:08:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:14,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:14,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:14,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:14,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:14,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:14,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:14,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:14,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:08:14,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:14,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:14,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:14,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:14,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:08:14,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:08:14,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:08:14,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 08:08:14,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933845551] [2020-10-13 08:08:14,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:14,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:14,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834959684] [2020-10-13 08:08:14,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:14,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:14,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:14,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:14,775 INFO L87 Difference]: Start difference. First operand 3197 states and 3870 transitions. Second operand 5 states. [2020-10-13 08:08:16,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:16,989 INFO L93 Difference]: Finished difference Result 7168 states and 8887 transitions. [2020-10-13 08:08:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:16,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2020-10-13 08:08:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:17,009 INFO L225 Difference]: With dead ends: 7168 [2020-10-13 08:08:17,009 INFO L226 Difference]: Without dead ends: 3977 [2020-10-13 08:08:17,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2020-10-13 08:08:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3773. [2020-10-13 08:08:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3773 states. [2020-10-13 08:08:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 4599 transitions. [2020-10-13 08:08:17,102 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 4599 transitions. Word has length 257 [2020-10-13 08:08:17,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:17,103 INFO L479 AbstractCegarLoop]: Abstraction has 3773 states and 4599 transitions. [2020-10-13 08:08:17,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 4599 transitions. [2020-10-13 08:08:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-13 08:08:17,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:17,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:17,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:08:17,109 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:17,110 INFO L82 PathProgramCache]: Analyzing trace with hash -710042643, now seen corresponding path program 1 times [2020-10-13 08:08:17,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:17,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003643500] [2020-10-13 08:08:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:18,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-13 08:08:18,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-13 08:08:18,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-13 08:08:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:08:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:18,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:18,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:18,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:08:18,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:18,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 08:08:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:08:18,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:08:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 08:08:19,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003643500] [2020-10-13 08:08:19,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:19,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:19,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759902267] [2020-10-13 08:08:19,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:19,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:19,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:19,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:19,049 INFO L87 Difference]: Start difference. First operand 3773 states and 4599 transitions. Second operand 5 states. [2020-10-13 08:08:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:20,639 INFO L93 Difference]: Finished difference Result 7572 states and 9292 transitions. [2020-10-13 08:08:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:20,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-13 08:08:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:20,657 INFO L225 Difference]: With dead ends: 7572 [2020-10-13 08:08:20,657 INFO L226 Difference]: Without dead ends: 3787 [2020-10-13 08:08:20,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2020-10-13 08:08:20,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3773. [2020-10-13 08:08:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3773 states. [2020-10-13 08:08:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 4586 transitions. [2020-10-13 08:08:20,753 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 4586 transitions. Word has length 259 [2020-10-13 08:08:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:20,754 INFO L479 AbstractCegarLoop]: Abstraction has 3773 states and 4586 transitions. [2020-10-13 08:08:20,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 4586 transitions. [2020-10-13 08:08:20,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-13 08:08:20,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:20,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:20,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:08:20,767 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1280121782, now seen corresponding path program 1 times [2020-10-13 08:08:20,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:20,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787275224] [2020-10-13 08:08:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 08:08:21,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-13 08:08:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:08:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:08:21,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:21,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:21,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:08:21,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:08:21,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:21,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:08:21,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:08:21,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787275224] [2020-10-13 08:08:21,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:21,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:21,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120869024] [2020-10-13 08:08:21,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:21,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:21,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:21,697 INFO L87 Difference]: Start difference. First operand 3773 states and 4586 transitions. Second operand 7 states. [2020-10-13 08:08:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:25,249 INFO L93 Difference]: Finished difference Result 7973 states and 9781 transitions. [2020-10-13 08:08:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:08:25,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-13 08:08:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:25,267 INFO L225 Difference]: With dead ends: 7973 [2020-10-13 08:08:25,267 INFO L226 Difference]: Without dead ends: 4206 [2020-10-13 08:08:25,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2020-10-13 08:08:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 3983. [2020-10-13 08:08:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3983 states. [2020-10-13 08:08:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 4836 transitions. [2020-10-13 08:08:25,364 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 4836 transitions. Word has length 262 [2020-10-13 08:08:25,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:25,365 INFO L479 AbstractCegarLoop]: Abstraction has 3983 states and 4836 transitions. [2020-10-13 08:08:25,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 4836 transitions. [2020-10-13 08:08:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 08:08:25,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:25,373 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:25,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:08:25,373 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:25,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:25,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1159033409, now seen corresponding path program 1 times [2020-10-13 08:08:25,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:25,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167279143] [2020-10-13 08:08:25,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:25,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:25,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:25,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-13 08:08:25,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:25,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-13 08:08:25,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:08:25,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:08:25,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:26,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:26,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:26,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:26,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:26,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:08:26,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:26,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:26,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:08:26,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:08:26,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:26,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:26,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:26,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:08:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:26,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:26,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:08:26,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:26,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:08:26,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:26,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:26,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:26,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:08:26,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-13 08:08:26,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167279143] [2020-10-13 08:08:26,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:26,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:26,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810711898] [2020-10-13 08:08:26,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:26,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:26,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:26,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:26,368 INFO L87 Difference]: Start difference. First operand 3983 states and 4836 transitions. Second operand 5 states. [2020-10-13 08:08:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:27,857 INFO L93 Difference]: Finished difference Result 7998 states and 9775 transitions. [2020-10-13 08:08:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:27,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-13 08:08:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:27,881 INFO L225 Difference]: With dead ends: 7998 [2020-10-13 08:08:27,881 INFO L226 Difference]: Without dead ends: 4001 [2020-10-13 08:08:27,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2020-10-13 08:08:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3983. [2020-10-13 08:08:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3983 states. [2020-10-13 08:08:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 4826 transitions. [2020-10-13 08:08:27,972 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 4826 transitions. Word has length 264 [2020-10-13 08:08:27,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:27,973 INFO L479 AbstractCegarLoop]: Abstraction has 3983 states and 4826 transitions. [2020-10-13 08:08:27,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 4826 transitions. [2020-10-13 08:08:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 08:08:27,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:27,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:27,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:08:27,981 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:27,981 INFO L82 PathProgramCache]: Analyzing trace with hash -821252979, now seen corresponding path program 1 times [2020-10-13 08:08:27,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:27,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864183850] [2020-10-13 08:08:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:29,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:29,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 08:08:29,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-10-13 08:08:29,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 08:08:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:08:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:29,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:29,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:29,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:29,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:29,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:29,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:29,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:29,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:29,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:08:29,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:29,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:29,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:08:29,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:29,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:08:29,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:29,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:08:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-13 08:08:29,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864183850] [2020-10-13 08:08:29,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:29,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:29,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409559047] [2020-10-13 08:08:29,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:29,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:29,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:29,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:29,681 INFO L87 Difference]: Start difference. First operand 3983 states and 4826 transitions. Second operand 5 states. [2020-10-13 08:08:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:32,191 INFO L93 Difference]: Finished difference Result 9135 states and 11342 transitions. [2020-10-13 08:08:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:32,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-10-13 08:08:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:32,209 INFO L225 Difference]: With dead ends: 9135 [2020-10-13 08:08:32,209 INFO L226 Difference]: Without dead ends: 5158 [2020-10-13 08:08:32,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2020-10-13 08:08:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 5133. [2020-10-13 08:08:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5133 states. [2020-10-13 08:08:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 6237 transitions. [2020-10-13 08:08:32,316 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 6237 transitions. Word has length 275 [2020-10-13 08:08:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:32,317 INFO L479 AbstractCegarLoop]: Abstraction has 5133 states and 6237 transitions. [2020-10-13 08:08:32,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 6237 transitions. [2020-10-13 08:08:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-13 08:08:32,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:32,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:32,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:08:32,325 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:32,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:32,325 INFO L82 PathProgramCache]: Analyzing trace with hash 277664395, now seen corresponding path program 1 times [2020-10-13 08:08:32,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:32,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159303610] [2020-10-13 08:08:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:33,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:33,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-13 08:08:33,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-13 08:08:33,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:08:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:08:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:33,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:33,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:33,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:33,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:33,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:33,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:33,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:08:33,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:08:33,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:08:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:33,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:08:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:33,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:33,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:33,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:33,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:08:33,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:08:33,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159303610] [2020-10-13 08:08:33,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:33,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:33,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320515822] [2020-10-13 08:08:33,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:33,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:33,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:33,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:33,897 INFO L87 Difference]: Start difference. First operand 5133 states and 6237 transitions. Second operand 7 states. [2020-10-13 08:08:37,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:37,219 INFO L93 Difference]: Finished difference Result 11060 states and 13439 transitions. [2020-10-13 08:08:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:08:37,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-13 08:08:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:37,235 INFO L225 Difference]: With dead ends: 11060 [2020-10-13 08:08:37,235 INFO L226 Difference]: Without dead ends: 5933 [2020-10-13 08:08:37,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2020-10-13 08:08:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 5721. [2020-10-13 08:08:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5721 states. [2020-10-13 08:08:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 6893 transitions. [2020-10-13 08:08:37,340 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 6893 transitions. Word has length 278 [2020-10-13 08:08:37,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:37,341 INFO L479 AbstractCegarLoop]: Abstraction has 5721 states and 6893 transitions. [2020-10-13 08:08:37,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 6893 transitions. [2020-10-13 08:08:37,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-13 08:08:37,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:37,349 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:37,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:08:37,350 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:37,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:37,350 INFO L82 PathProgramCache]: Analyzing trace with hash -475066005, now seen corresponding path program 1 times [2020-10-13 08:08:37,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:37,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863890028] [2020-10-13 08:08:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 08:08:37,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-13 08:08:37,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 08:08:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:08:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:37,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:37,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:37,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:37,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:08:37,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:08:37,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:08:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:37,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:37,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:08:37,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 08:08:37,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-13 08:08:37,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863890028] [2020-10-13 08:08:37,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:37,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:37,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092640490] [2020-10-13 08:08:37,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:37,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:37,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:37,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:37,951 INFO L87 Difference]: Start difference. First operand 5721 states and 6893 transitions. Second operand 5 states. [2020-10-13 08:08:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:40,175 INFO L93 Difference]: Finished difference Result 12978 states and 15795 transitions. [2020-10-13 08:08:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:40,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-13 08:08:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:40,197 INFO L225 Difference]: With dead ends: 12978 [2020-10-13 08:08:40,197 INFO L226 Difference]: Without dead ends: 7269 [2020-10-13 08:08:40,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2020-10-13 08:08:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 7059. [2020-10-13 08:08:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7059 states. [2020-10-13 08:08:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 8431 transitions. [2020-10-13 08:08:40,349 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 8431 transitions. Word has length 284 [2020-10-13 08:08:40,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:40,350 INFO L479 AbstractCegarLoop]: Abstraction has 7059 states and 8431 transitions. [2020-10-13 08:08:40,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 8431 transitions. [2020-10-13 08:08:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-13 08:08:40,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:40,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:40,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:08:40,363 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1984087510, now seen corresponding path program 1 times [2020-10-13 08:08:40,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:40,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056173282] [2020-10-13 08:08:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:41,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 08:08:42,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2108 [2020-10-13 08:08:42,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:08:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-13 08:08:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 08:08:42,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:42,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:42,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:08:42,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:42,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 08:08:42,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:08:42,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:42,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 08:08:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:43,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:43,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:43,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:43,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:08:43,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:08:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:43,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 123 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:08:43,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056173282] [2020-10-13 08:08:43,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:43,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 08:08:43,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842007966] [2020-10-13 08:08:43,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 08:08:43,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:43,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 08:08:43,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:08:43,167 INFO L87 Difference]: Start difference. First operand 7059 states and 8431 transitions. Second operand 9 states. [2020-10-13 08:08:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:48,331 INFO L93 Difference]: Finished difference Result 19331 states and 24013 transitions. [2020-10-13 08:08:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:08:48,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 290 [2020-10-13 08:08:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:48,377 INFO L225 Difference]: With dead ends: 19331 [2020-10-13 08:08:48,377 INFO L226 Difference]: Without dead ends: 12280 [2020-10-13 08:08:48,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-13 08:08:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12280 states. [2020-10-13 08:08:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12280 to 10919. [2020-10-13 08:08:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10919 states. [2020-10-13 08:08:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10919 states to 10919 states and 13463 transitions. [2020-10-13 08:08:48,641 INFO L78 Accepts]: Start accepts. Automaton has 10919 states and 13463 transitions. Word has length 290 [2020-10-13 08:08:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:48,641 INFO L479 AbstractCegarLoop]: Abstraction has 10919 states and 13463 transitions. [2020-10-13 08:08:48,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 08:08:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 10919 states and 13463 transitions. [2020-10-13 08:08:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-13 08:08:48,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:48,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:48,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:08:48,654 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:48,654 INFO L82 PathProgramCache]: Analyzing trace with hash -132371918, now seen corresponding path program 1 times [2020-10-13 08:08:48,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:48,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473066740] [2020-10-13 08:08:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:48,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 08:08:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-10-13 08:08:50,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:08:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:08:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:50,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:50,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:50,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:50,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:50,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:50,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:50,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 08:08:50,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:50,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:08:50,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 08:08:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 08:08:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:50,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:50,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:50,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:08:50,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:50,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:08:50,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473066740] [2020-10-13 08:08:50,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:50,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:08:50,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374456981] [2020-10-13 08:08:50,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:08:50,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:50,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:08:50,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:08:50,777 INFO L87 Difference]: Start difference. First operand 10919 states and 13463 transitions. Second operand 8 states. [2020-10-13 08:08:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:54,453 INFO L93 Difference]: Finished difference Result 23406 states and 28998 transitions. [2020-10-13 08:08:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:08:54,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 294 [2020-10-13 08:08:54,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:54,487 INFO L225 Difference]: With dead ends: 23406 [2020-10-13 08:08:54,488 INFO L226 Difference]: Without dead ends: 12683 [2020-10-13 08:08:54,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 08:08:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12683 states. [2020-10-13 08:08:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12683 to 11887. [2020-10-13 08:08:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11887 states. [2020-10-13 08:08:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11887 states to 11887 states and 14514 transitions. [2020-10-13 08:08:54,718 INFO L78 Accepts]: Start accepts. Automaton has 11887 states and 14514 transitions. Word has length 294 [2020-10-13 08:08:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:54,718 INFO L479 AbstractCegarLoop]: Abstraction has 11887 states and 14514 transitions. [2020-10-13 08:08:54,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:08:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 11887 states and 14514 transitions. [2020-10-13 08:08:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-13 08:08:54,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:54,729 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:54,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:08:54,729 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:54,730 INFO L82 PathProgramCache]: Analyzing trace with hash 884357283, now seen corresponding path program 1 times [2020-10-13 08:08:54,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:54,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518868890] [2020-10-13 08:08:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:56,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:56,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 08:08:56,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:08:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-10-13 08:08:56,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-13 08:08:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:08:56,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:56,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:56,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:56,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:56,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:56,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:56,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:56,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:56,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:08:56,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:56,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:08:56,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 08:08:56,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-13 08:08:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:08:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 08:08:56,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518868890] [2020-10-13 08:08:56,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:08:56,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:08:56,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699483594] [2020-10-13 08:08:56,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:56,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:56,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:56,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:56,496 INFO L87 Difference]: Start difference. First operand 11887 states and 14514 transitions. Second operand 5 states. [2020-10-13 08:08:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:58,910 INFO L93 Difference]: Finished difference Result 26272 states and 32491 transitions. [2020-10-13 08:08:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:58,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-13 08:08:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:58,934 INFO L225 Difference]: With dead ends: 26272 [2020-10-13 08:08:58,934 INFO L226 Difference]: Without dead ends: 14002 [2020-10-13 08:08:58,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14002 states. [2020-10-13 08:08:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14002 to 13788. [2020-10-13 08:08:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13788 states. [2020-10-13 08:08:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13788 states to 13788 states and 16442 transitions. [2020-10-13 08:08:59,203 INFO L78 Accepts]: Start accepts. Automaton has 13788 states and 16442 transitions. Word has length 305 [2020-10-13 08:08:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:59,204 INFO L479 AbstractCegarLoop]: Abstraction has 13788 states and 16442 transitions. [2020-10-13 08:08:59,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13788 states and 16442 transitions. [2020-10-13 08:08:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 08:08:59,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:59,212 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:59,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:08:59,213 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:59,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1441476794, now seen corresponding path program 1 times [2020-10-13 08:08:59,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:59,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181063233] [2020-10-13 08:08:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:02,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 08:09:02,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:09:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3674 [2020-10-13 08:09:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:09:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:09:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:02,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:02,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:02,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:02,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:02,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:09:02,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:02,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:03,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:09:03,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:09:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-13 08:09:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:09:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:03,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:09:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:03,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:03,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:09:03,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:03,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:09:03,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:03,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-13 08:09:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-13 08:09:03,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181063233] [2020-10-13 08:09:03,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:03,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:09:03,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546951874] [2020-10-13 08:09:03,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:09:03,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:03,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:09:03,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:09:03,232 INFO L87 Difference]: Start difference. First operand 13788 states and 16442 transitions. Second operand 5 states. [2020-10-13 08:09:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:05,272 INFO L93 Difference]: Finished difference Result 30036 states and 36327 transitions. [2020-10-13 08:09:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:09:05,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-13 08:09:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:05,310 INFO L225 Difference]: With dead ends: 30036 [2020-10-13 08:09:05,310 INFO L226 Difference]: Without dead ends: 15684 [2020-10-13 08:09:05,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:09:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15684 states. [2020-10-13 08:09:05,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15684 to 15466. [2020-10-13 08:09:05,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15466 states. [2020-10-13 08:09:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15466 states to 15466 states and 18283 transitions. [2020-10-13 08:09:05,632 INFO L78 Accepts]: Start accepts. Automaton has 15466 states and 18283 transitions. Word has length 311 [2020-10-13 08:09:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:05,632 INFO L479 AbstractCegarLoop]: Abstraction has 15466 states and 18283 transitions. [2020-10-13 08:09:05,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:09:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 15466 states and 18283 transitions. [2020-10-13 08:09:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-13 08:09:05,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:05,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:05,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:09:05,644 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:05,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:05,644 INFO L82 PathProgramCache]: Analyzing trace with hash -764324093, now seen corresponding path program 1 times [2020-10-13 08:09:05,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:05,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872216925] [2020-10-13 08:09:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:05,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:07,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:07,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 08:09:07,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:09:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-13 08:09:07,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 302 [2020-10-13 08:09:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:09:07,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:07,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:07,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:07,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:09:07,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:07,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:07,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:09:07,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:09:07,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:09:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:07,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:07,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:09:07,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:09:07,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:09:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-13 08:09:07,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872216925] [2020-10-13 08:09:07,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:07,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:09:07,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144251692] [2020-10-13 08:09:07,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:09:07,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:07,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:09:07,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:09:07,510 INFO L87 Difference]: Start difference. First operand 15466 states and 18283 transitions. Second operand 5 states. [2020-10-13 08:09:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:09,329 INFO L93 Difference]: Finished difference Result 30773 states and 36430 transitions. [2020-10-13 08:09:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:09:09,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-13 08:09:09,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:09,362 INFO L225 Difference]: With dead ends: 30773 [2020-10-13 08:09:09,362 INFO L226 Difference]: Without dead ends: 15490 [2020-10-13 08:09:09,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:09:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15490 states. [2020-10-13 08:09:09,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15490 to 15464. [2020-10-13 08:09:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15464 states. [2020-10-13 08:09:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15464 states to 15464 states and 18218 transitions. [2020-10-13 08:09:09,866 INFO L78 Accepts]: Start accepts. Automaton has 15464 states and 18218 transitions. Word has length 327 [2020-10-13 08:09:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:09,867 INFO L479 AbstractCegarLoop]: Abstraction has 15464 states and 18218 transitions. [2020-10-13 08:09:09,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:09:09,867 INFO L276 IsEmpty]: Start isEmpty. Operand 15464 states and 18218 transitions. [2020-10-13 08:09:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-13 08:09:09,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:09,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:09,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:09:09,876 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:09,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1163936277, now seen corresponding path program 1 times [2020-10-13 08:09:09,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:09,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544971296] [2020-10-13 08:09:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:11,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:11,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-13 08:09:11,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1364 [2020-10-13 08:09:11,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 08:09:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:09:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-13 08:09:11,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:11,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:11,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:11,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:11,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:11,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:09:11,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:11,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:09:11,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:09:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:09:11,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:09:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:12,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:12,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:09:12,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-13 08:09:12,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:09:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:09:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:09:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 158 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:09:12,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544971296] [2020-10-13 08:09:12,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:12,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 08:09:12,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441274179] [2020-10-13 08:09:12,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 08:09:12,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:12,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 08:09:12,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:09:12,219 INFO L87 Difference]: Start difference. First operand 15464 states and 18218 transitions. Second operand 9 states. [2020-10-13 08:09:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:17,522 INFO L93 Difference]: Finished difference Result 26412 states and 31826 transitions. [2020-10-13 08:09:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 08:09:17,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 343 [2020-10-13 08:09:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:17,569 INFO L225 Difference]: With dead ends: 26412 [2020-10-13 08:09:17,569 INFO L226 Difference]: Without dead ends: 26410 [2020-10-13 08:09:17,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-13 08:09:17,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26410 states. [2020-10-13 08:09:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26410 to 25272. [2020-10-13 08:09:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25272 states. [2020-10-13 08:09:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25272 states to 25272 states and 30093 transitions. [2020-10-13 08:09:18,000 INFO L78 Accepts]: Start accepts. Automaton has 25272 states and 30093 transitions. Word has length 343 [2020-10-13 08:09:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:18,001 INFO L479 AbstractCegarLoop]: Abstraction has 25272 states and 30093 transitions. [2020-10-13 08:09:18,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 08:09:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 25272 states and 30093 transitions. [2020-10-13 08:09:18,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-13 08:09:18,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:18,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:18,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:09:18,015 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:18,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1887709223, now seen corresponding path program 1 times [2020-10-13 08:09:18,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:18,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841454947] [2020-10-13 08:09:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:23,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-13 08:09:23,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:09:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 08:09:23,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 348 [2020-10-13 08:09:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:09:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:23,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:23,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:23,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:23,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:23,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:23,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:09:23,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:09:23,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:23,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:09:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:23,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:23,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:09:23,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:09:23,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-13 08:09:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:23,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:23,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:09:23,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:09:23,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:09:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2020-10-13 08:09:23,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841454947] [2020-10-13 08:09:23,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:23,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:09:23,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178397810] [2020-10-13 08:09:23,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:09:23,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:23,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:09:23,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:09:23,412 INFO L87 Difference]: Start difference. First operand 25272 states and 30093 transitions. Second operand 5 states. [2020-10-13 08:09:25,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:25,867 INFO L93 Difference]: Finished difference Result 51767 states and 62053 transitions. [2020-10-13 08:09:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:09:25,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2020-10-13 08:09:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:25,912 INFO L225 Difference]: With dead ends: 51767 [2020-10-13 08:09:25,912 INFO L226 Difference]: Without dead ends: 26500 [2020-10-13 08:09:25,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:09:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26500 states. [2020-10-13 08:09:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26500 to 26417. [2020-10-13 08:09:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26417 states. [2020-10-13 08:09:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26417 states to 26417 states and 31650 transitions. [2020-10-13 08:09:26,471 INFO L78 Accepts]: Start accepts. Automaton has 26417 states and 31650 transitions. Word has length 372 [2020-10-13 08:09:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:26,472 INFO L479 AbstractCegarLoop]: Abstraction has 26417 states and 31650 transitions. [2020-10-13 08:09:26,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:09:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 26417 states and 31650 transitions. [2020-10-13 08:09:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-13 08:09:26,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:26,485 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:26,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:09:26,485 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:26,486 INFO L82 PathProgramCache]: Analyzing trace with hash -340651032, now seen corresponding path program 1 times [2020-10-13 08:09:26,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:26,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606206234] [2020-10-13 08:09:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:28,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:28,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-13 08:09:28,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:09:28,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1757 [2020-10-13 08:09:28,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:09:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:09:28,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:28,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:28,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:28,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:28,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:28,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:28,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:28,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:28,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:28,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:28,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:09:28,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 08:09:28,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:28,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:28,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:09:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:28,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:28,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:09:28,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:09:28,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:09:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:28,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:09:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:28,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:28,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:09:28,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:09:28,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:09:28,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-13 08:09:29,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606206234] [2020-10-13 08:09:29,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:29,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:09:29,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492901634] [2020-10-13 08:09:29,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:09:29,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:29,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:09:29,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:09:29,088 INFO L87 Difference]: Start difference. First operand 26417 states and 31650 transitions. Second operand 7 states. [2020-10-13 08:09:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:32,711 INFO L93 Difference]: Finished difference Result 52528 states and 62863 transitions. [2020-10-13 08:09:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:09:32,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 400 [2020-10-13 08:09:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:32,754 INFO L225 Difference]: With dead ends: 52528 [2020-10-13 08:09:32,755 INFO L226 Difference]: Without dead ends: 26307 [2020-10-13 08:09:32,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:09:32,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26307 states. [2020-10-13 08:09:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26307 to 25837. [2020-10-13 08:09:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25837 states. [2020-10-13 08:09:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25837 states to 25837 states and 30683 transitions. [2020-10-13 08:09:33,131 INFO L78 Accepts]: Start accepts. Automaton has 25837 states and 30683 transitions. Word has length 400 [2020-10-13 08:09:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:33,131 INFO L479 AbstractCegarLoop]: Abstraction has 25837 states and 30683 transitions. [2020-10-13 08:09:33,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:09:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 25837 states and 30683 transitions. [2020-10-13 08:09:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-10-13 08:09:33,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:33,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:33,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:09:33,159 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:33,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:33,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1671723715, now seen corresponding path program 1 times [2020-10-13 08:09:33,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:33,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691373572] [2020-10-13 08:09:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:33,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:37,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:37,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-13 08:09:37,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:09:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4434 [2020-10-13 08:09:37,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:09:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-13 08:09:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:09:37,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:37,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:37,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:37,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:37,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:37,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:37,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:09:37,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:37,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:09:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:09:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:38,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:38,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:09:38,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:09:38,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 08:09:38,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-13 08:09:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:38,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:38,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:09:38,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:38,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-13 08:09:38,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:09:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:09:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 08:09:39,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691373572] [2020-10-13 08:09:39,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:39,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:09:39,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043624114] [2020-10-13 08:09:39,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:09:39,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:39,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:09:39,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:09:39,136 INFO L87 Difference]: Start difference. First operand 25837 states and 30683 transitions. Second operand 10 states. [2020-10-13 08:09:39,368 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-13 08:09:39,613 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-13 08:09:39,826 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-13 08:09:39,979 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-13 08:09:42,396 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2020-10-13 08:09:42,781 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-13 08:09:43,036 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-10-13 08:09:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:43,615 INFO L93 Difference]: Finished difference Result 51441 states and 61142 transitions. [2020-10-13 08:09:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 08:09:43,617 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 444 [2020-10-13 08:09:43,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:43,672 INFO L225 Difference]: With dead ends: 51441 [2020-10-13 08:09:43,672 INFO L226 Difference]: Without dead ends: 25692 [2020-10-13 08:09:43,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-13 08:09:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25692 states. [2020-10-13 08:09:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25692 to 25457. [2020-10-13 08:09:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25457 states. [2020-10-13 08:09:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25457 states to 25457 states and 30181 transitions. [2020-10-13 08:09:44,042 INFO L78 Accepts]: Start accepts. Automaton has 25457 states and 30181 transitions. Word has length 444 [2020-10-13 08:09:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:44,043 INFO L479 AbstractCegarLoop]: Abstraction has 25457 states and 30181 transitions. [2020-10-13 08:09:44,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:09:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 25457 states and 30181 transitions. [2020-10-13 08:09:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-13 08:09:44,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:44,068 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:44,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:09:44,069 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:44,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:44,069 INFO L82 PathProgramCache]: Analyzing trace with hash 497057270, now seen corresponding path program 1 times [2020-10-13 08:09:44,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:44,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566981908] [2020-10-13 08:09:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:44,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:46,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-13 08:09:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1947 [2020-10-13 08:09:46,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:09:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:09:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:09:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:46,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:09:46,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:09:46,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:09:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:46,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:09:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:46,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:09:46,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:09:46,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:09:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:46,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-13 08:09:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:46,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:09:46,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:09:46,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:09:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 179 proven. 87 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-13 08:09:46,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566981908] [2020-10-13 08:09:46,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:46,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:09:46,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910876827] [2020-10-13 08:09:46,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:09:46,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:46,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:09:46,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:09:46,811 INFO L87 Difference]: Start difference. First operand 25457 states and 30181 transitions. Second operand 7 states. [2020-10-13 08:09:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:50,946 INFO L93 Difference]: Finished difference Result 54442 states and 64741 transitions. [2020-10-13 08:09:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:09:50,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 447 [2020-10-13 08:09:50,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:50,994 INFO L225 Difference]: With dead ends: 54442 [2020-10-13 08:09:50,995 INFO L226 Difference]: Without dead ends: 29180 [2020-10-13 08:09:51,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:09:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29180 states. [2020-10-13 08:09:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29180 to 28895. [2020-10-13 08:09:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28895 states. [2020-10-13 08:09:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28895 states to 28895 states and 33885 transitions. [2020-10-13 08:09:51,365 INFO L78 Accepts]: Start accepts. Automaton has 28895 states and 33885 transitions. Word has length 447 [2020-10-13 08:09:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:51,366 INFO L479 AbstractCegarLoop]: Abstraction has 28895 states and 33885 transitions. [2020-10-13 08:09:51,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:09:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 28895 states and 33885 transitions. [2020-10-13 08:09:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-13 08:09:51,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:51,383 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:51,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:09:51,383 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:51,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:51,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1581461293, now seen corresponding path program 1 times [2020-10-13 08:09:51,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:51,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821217435] [2020-10-13 08:09:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-13 08:09:56,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 08:09:56,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 08:09:56,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 348 [2020-10-13 08:09:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:09:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:56,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:09:56,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:09:56,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:09:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:09:56,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:09:56,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-13 08:09:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:09:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:09:56,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:09:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-13 08:09:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:09:56,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 08:09:56,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:09:56,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2020-10-13 08:09:57,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821217435] [2020-10-13 08:09:57,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:57,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:09:57,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421306165] [2020-10-13 08:09:57,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:09:57,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:57,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:09:57,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:09:57,142 INFO L87 Difference]: Start difference. First operand 28895 states and 33885 transitions. Second operand 7 states. [2020-10-13 08:10:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:00,184 INFO L93 Difference]: Finished difference Result 56522 states and 65912 transitions. [2020-10-13 08:10:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:10:00,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 466 [2020-10-13 08:10:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:00,225 INFO L225 Difference]: With dead ends: 56522 [2020-10-13 08:10:00,225 INFO L226 Difference]: Without dead ends: 27823 [2020-10-13 08:10:00,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:10:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27823 states. [2020-10-13 08:10:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27823 to 27364. [2020-10-13 08:10:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27364 states. [2020-10-13 08:10:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27364 states to 27364 states and 31288 transitions. [2020-10-13 08:10:00,541 INFO L78 Accepts]: Start accepts. Automaton has 27364 states and 31288 transitions. Word has length 466 [2020-10-13 08:10:00,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:00,541 INFO L479 AbstractCegarLoop]: Abstraction has 27364 states and 31288 transitions. [2020-10-13 08:10:00,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:00,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27364 states and 31288 transitions. [2020-10-13 08:10:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-13 08:10:00,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:00,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:00,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 08:10:00,559 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:00,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1962490873, now seen corresponding path program 1 times [2020-10-13 08:10:00,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:00,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786058334] [2020-10-13 08:10:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:00,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-13 08:10:03,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2525 [2020-10-13 08:10:03,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-13 08:10:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:10:03,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:03,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:03,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 08:10:03,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:10:03,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:10:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 08:10:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:10:03,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 08:10:03,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:03,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:03,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:10:03,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-13 08:10:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:10:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 08:10:03,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:10:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 179 proven. 87 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-10-13 08:10:04,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786058334] [2020-10-13 08:10:04,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:04,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:04,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069215713] [2020-10-13 08:10:04,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:04,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:04,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:04,105 INFO L87 Difference]: Start difference. First operand 27364 states and 31288 transitions. Second operand 7 states. [2020-10-13 08:10:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:08,162 INFO L93 Difference]: Finished difference Result 57254 states and 65613 transitions. [2020-10-13 08:10:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:10:08,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 485 [2020-10-13 08:10:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:08,208 INFO L225 Difference]: With dead ends: 57254 [2020-10-13 08:10:08,209 INFO L226 Difference]: Without dead ends: 30086 [2020-10-13 08:10:08,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:10:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30086 states. [2020-10-13 08:10:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30086 to 29248. [2020-10-13 08:10:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29248 states. [2020-10-13 08:10:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29248 states to 29248 states and 32875 transitions. [2020-10-13 08:10:08,572 INFO L78 Accepts]: Start accepts. Automaton has 29248 states and 32875 transitions. Word has length 485 [2020-10-13 08:10:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:08,572 INFO L479 AbstractCegarLoop]: Abstraction has 29248 states and 32875 transitions. [2020-10-13 08:10:08,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 29248 states and 32875 transitions. [2020-10-13 08:10:08,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-13 08:10:08,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:08,600 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:08,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 08:10:08,600 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:08,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2105134033, now seen corresponding path program 1 times [2020-10-13 08:10:08,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:08,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834124918] [2020-10-13 08:10:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:09,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:09,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-13 08:10:09,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-13 08:10:09,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-13 08:10:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:10:09,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:09,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:09,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:10:09,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:10:09,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:10,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:10:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:10,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:10:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:10:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 08:10:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-13 08:10:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:10,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:10,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:10:10,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-13 08:10:10,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:10:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-13 08:10:11,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834124918] [2020-10-13 08:10:11,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:11,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:11,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199091204] [2020-10-13 08:10:11,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:11,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:11,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:11,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:11,007 INFO L87 Difference]: Start difference. First operand 29248 states and 32875 transitions. Second operand 7 states. [2020-10-13 08:10:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:13,896 INFO L93 Difference]: Finished difference Result 58951 states and 66312 transitions. [2020-10-13 08:10:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:10:13,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2020-10-13 08:10:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:13,946 INFO L225 Difference]: With dead ends: 58951 [2020-10-13 08:10:13,946 INFO L226 Difference]: Without dead ends: 29899 [2020-10-13 08:10:13,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:10:13,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29899 states. [2020-10-13 08:10:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29899 to 29056. [2020-10-13 08:10:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29056 states. [2020-10-13 08:10:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29056 states to 29056 states and 32580 transitions. [2020-10-13 08:10:14,302 INFO L78 Accepts]: Start accepts. Automaton has 29056 states and 32580 transitions. Word has length 538 [2020-10-13 08:10:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:14,303 INFO L479 AbstractCegarLoop]: Abstraction has 29056 states and 32580 transitions. [2020-10-13 08:10:14,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 29056 states and 32580 transitions. [2020-10-13 08:10:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-13 08:10:14,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:14,325 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:14,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 08:10:14,326 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:14,326 INFO L82 PathProgramCache]: Analyzing trace with hash -193921416, now seen corresponding path program 1 times [2020-10-13 08:10:14,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:14,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390518920] [2020-10-13 08:10:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:17,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:17,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-13 08:10:17,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:10:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2977 [2020-10-13 08:10:17,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-10-13 08:10:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:10:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:17,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:17,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:17,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:17,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:17,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:17,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:17,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:17,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:17,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:17,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:10:17,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:10:17,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:17,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:17,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:10:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:17,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:17,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:10:17,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 08:10:17,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 08:10:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:10:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:17,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-13 08:10:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:17,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:17,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:10:17,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:10:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:10:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:17,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-13 08:10:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:17,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:17,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:10:17,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:10:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:10:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:17,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 131 proven. 4 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-13 08:10:18,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390518920] [2020-10-13 08:10:18,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:18,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:10:18,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040015383] [2020-10-13 08:10:18,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:10:18,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:18,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:10:18,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:10:18,010 INFO L87 Difference]: Start difference. First operand 29056 states and 32580 transitions. Second operand 5 states. [2020-10-13 08:10:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:19,654 INFO L93 Difference]: Finished difference Result 55864 states and 62381 transitions. [2020-10-13 08:10:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:10:19,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 590 [2020-10-13 08:10:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:19,696 INFO L225 Difference]: With dead ends: 55864 [2020-10-13 08:10:19,696 INFO L226 Difference]: Without dead ends: 27004 [2020-10-13 08:10:19,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:10:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27004 states. [2020-10-13 08:10:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27004 to 26920. [2020-10-13 08:10:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26920 states. [2020-10-13 08:10:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26920 states to 26920 states and 29894 transitions. [2020-10-13 08:10:19,978 INFO L78 Accepts]: Start accepts. Automaton has 26920 states and 29894 transitions. Word has length 590 [2020-10-13 08:10:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:19,979 INFO L479 AbstractCegarLoop]: Abstraction has 26920 states and 29894 transitions. [2020-10-13 08:10:19,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:10:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 26920 states and 29894 transitions. [2020-10-13 08:10:20,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2020-10-13 08:10:20,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:20,002 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:20,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 08:10:20,002 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:20,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1727174918, now seen corresponding path program 1 times [2020-10-13 08:10:20,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:20,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244245898] [2020-10-13 08:10:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:25,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:25,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-13 08:10:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 08:10:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:10:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 436 [2020-10-13 08:10:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-13 08:10:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:25,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:25,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:25,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:25,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:25,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:10:25,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:25,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:25,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:25,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:10:25,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:10:25,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:10:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:25,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:25,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 08:10:25,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:25,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:10:25,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:25,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-13 08:10:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:25,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:25,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:10:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:10:25,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:10:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-13 08:10:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:25,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:25,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:25,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:10:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 08:10:25,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:10:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:10:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 513 proven. 32 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-13 08:10:26,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244245898] [2020-10-13 08:10:26,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:26,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:10:26,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540003106] [2020-10-13 08:10:26,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:10:26,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:26,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:10:26,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:10:26,400 INFO L87 Difference]: Start difference. First operand 26920 states and 29894 transitions. Second operand 8 states. [2020-10-13 08:10:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:31,500 INFO L93 Difference]: Finished difference Result 44664 states and 49990 transitions. [2020-10-13 08:10:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:10:31,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 634 [2020-10-13 08:10:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:31,572 INFO L225 Difference]: With dead ends: 44664 [2020-10-13 08:10:31,572 INFO L226 Difference]: Without dead ends: 44662 [2020-10-13 08:10:31,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-13 08:10:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44662 states. [2020-10-13 08:10:32,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44662 to 43412. [2020-10-13 08:10:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43412 states. [2020-10-13 08:10:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43412 states to 43412 states and 48277 transitions. [2020-10-13 08:10:32,117 INFO L78 Accepts]: Start accepts. Automaton has 43412 states and 48277 transitions. Word has length 634 [2020-10-13 08:10:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:32,118 INFO L479 AbstractCegarLoop]: Abstraction has 43412 states and 48277 transitions. [2020-10-13 08:10:32,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:10:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 43412 states and 48277 transitions. [2020-10-13 08:10:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-13 08:10:32,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:32,149 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:32,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 08:10:32,149 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash 120424173, now seen corresponding path program 1 times [2020-10-13 08:10:32,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:32,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526076666] [2020-10-13 08:10:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:37,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:37,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-13 08:10:37,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:10:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 08:10:37,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 533 [2020-10-13 08:10:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:10:37,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:37,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:37,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:37,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:37,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:37,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:37,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:37,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:37,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:10:37,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:37,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 08:10:37,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:37,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:37,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:37,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:37,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:37,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:10:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:37,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:37,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:10:37,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 08:10:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:37,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 08:10:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:37,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:10:37,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:10:37,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-13 08:10:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:38,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:38,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 08:10:38,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 08:10:38,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 08:10:38,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-10-13 08:10:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:38,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:10:38,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 08:10:38,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:10:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 529 proven. 2 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2020-10-13 08:10:39,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526076666] [2020-10-13 08:10:39,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:39,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:10:39,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049637466] [2020-10-13 08:10:39,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:10:39,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:39,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:10:39,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:10:39,270 INFO L87 Difference]: Start difference. First operand 43412 states and 48277 transitions. Second operand 8 states. [2020-10-13 08:10:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:44,338 INFO L93 Difference]: Finished difference Result 89238 states and 99328 transitions. [2020-10-13 08:10:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 08:10:44,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 648 [2020-10-13 08:10:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:44,407 INFO L225 Difference]: With dead ends: 89238 [2020-10-13 08:10:44,407 INFO L226 Difference]: Without dead ends: 44122 [2020-10-13 08:10:44,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 08:10:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44122 states. [2020-10-13 08:10:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44122 to 42472. [2020-10-13 08:10:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42472 states. [2020-10-13 08:10:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42472 states to 42472 states and 46742 transitions. [2020-10-13 08:10:44,897 INFO L78 Accepts]: Start accepts. Automaton has 42472 states and 46742 transitions. Word has length 648 [2020-10-13 08:10:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:44,898 INFO L479 AbstractCegarLoop]: Abstraction has 42472 states and 46742 transitions. [2020-10-13 08:10:44,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:10:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 42472 states and 46742 transitions. [2020-10-13 08:10:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2020-10-13 08:10:44,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:44,928 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:44,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 08:10:44,928 INFO L427 AbstractCegarLoop]: === Iteration 34 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:44,928 INFO L82 PathProgramCache]: Analyzing trace with hash 968803582, now seen corresponding path program 1 times [2020-10-13 08:10:44,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:44,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766246915] [2020-10-13 08:10:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 710 [2020-10-13 08:10:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4813 [2020-10-13 08:10:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:10:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-13 08:10:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 393 [2020-10-13 08:10:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:49,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:49,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:49,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:10:49,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:50,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:50,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:50,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:50,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:10:50,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:10:50,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:50,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:10:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:50,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:50,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:10:50,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 08:10:50,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:10:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-13 08:10:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:50,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-13 08:10:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:50,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:50,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 08:10:50,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 08:10:50,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:10:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-13 08:10:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:50,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-10-13 08:10:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:10:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 08:10:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:10:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:10:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 659 proven. 238 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-13 08:10:51,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766246915] [2020-10-13 08:10:51,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:51,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 08:10:51,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263360316] [2020-10-13 08:10:51,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 08:10:51,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 08:10:51,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:10:51,311 INFO L87 Difference]: Start difference. First operand 42472 states and 46742 transitions. Second operand 12 states. [2020-10-13 08:11:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:07,232 INFO L93 Difference]: Finished difference Result 169611 states and 189830 transitions. [2020-10-13 08:11:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-13 08:11:07,234 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 694 [2020-10-13 08:11:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:07,489 INFO L225 Difference]: With dead ends: 169611 [2020-10-13 08:11:07,489 INFO L226 Difference]: Without dead ends: 126291 [2020-10-13 08:11:07,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=495, Invalid=2261, Unknown=0, NotChecked=0, Total=2756 [2020-10-13 08:11:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126291 states. [2020-10-13 08:11:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126291 to 111991. [2020-10-13 08:11:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111991 states. [2020-10-13 08:11:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111991 states to 111991 states and 122175 transitions. [2020-10-13 08:11:09,242 INFO L78 Accepts]: Start accepts. Automaton has 111991 states and 122175 transitions. Word has length 694 [2020-10-13 08:11:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:09,243 INFO L479 AbstractCegarLoop]: Abstraction has 111991 states and 122175 transitions. [2020-10-13 08:11:09,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 08:11:09,243 INFO L276 IsEmpty]: Start isEmpty. Operand 111991 states and 122175 transitions. [2020-10-13 08:11:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2020-10-13 08:11:09,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:09,294 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:09,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 08:11:09,295 INFO L427 AbstractCegarLoop]: === Iteration 35 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:09,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:09,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1779649216, now seen corresponding path program 1 times [2020-10-13 08:11:09,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:09,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238397216] [2020-10-13 08:11:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking...