/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o100.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:16:51,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:16:51,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:16:51,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:16:51,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:16:51,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:16:51,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:16:51,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:16:51,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:16:51,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:16:51,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:16:51,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:16:51,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:16:51,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:16:51,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:16:51,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:16:51,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:16:51,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:16:51,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:16:51,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:16:51,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:16:51,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:16:51,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:16:51,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:16:51,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:16:51,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:16:51,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:16:51,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:16:51,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:16:51,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:16:51,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:16:51,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:16:51,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:16:51,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:16:51,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:16:51,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:16:51,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:16:51,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:16:51,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:16:51,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:16:51,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:16:51,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:16:51,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:16:51,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:16:51,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:16:51,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:16:51,730 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:16:51,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:16:51,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:16:51,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:16:51,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:16:51,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:16:51,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:16:51,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:16:51,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:16:51,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:16:51,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:16:51,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:16:51,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:16:51,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:16:51,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:16:51,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:16:51,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:16:51,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:16:51,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:16:51,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:16:51,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:16:51,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:16:51,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:16:51,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:16:51,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:16:51,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:16:52,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:16:52,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:16:52,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:16:52,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:16:52,246 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:16:52,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-25 12:16:52,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8121e40d/f94a581697284b31b1d09261698e61f5/FLAG8ddd05ab1 [2020-09-25 12:16:52,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:16:52,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-25 12:16:52,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8121e40d/f94a581697284b31b1d09261698e61f5/FLAG8ddd05ab1 [2020-09-25 12:16:53,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8121e40d/f94a581697284b31b1d09261698e61f5 [2020-09-25 12:16:53,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:16:53,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:16:53,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:16:53,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:16:53,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:16:53,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53, skipping insertion in model container [2020-09-25 12:16:53,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:16:53,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:16:53,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:16:53,528 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:16:53,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:16:53,567 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:16:53,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53 WrapperNode [2020-09-25 12:16:53,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:16:53,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:16:53,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:16:53,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:16:53,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (1/1) ... [2020-09-25 12:16:53,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:16:53,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:16:53,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:16:53,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:16:53,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:16:53,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:16:53,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:16:53,773 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 12:16:53,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:16:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 12:16:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:16:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 12:16:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:16:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:16:53,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:16:53,972 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:16:53,973 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:16:53,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:16:53 BoogieIcfgContainer [2020-09-25 12:16:53,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:16:53,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:16:53,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:16:53,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:16:53,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:16:53" (1/3) ... [2020-09-25 12:16:53,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c30b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:16:53, skipping insertion in model container [2020-09-25 12:16:53,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:16:53" (2/3) ... [2020-09-25 12:16:53,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c30b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:16:53, skipping insertion in model container [2020-09-25 12:16:53,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:16:53" (3/3) ... [2020-09-25 12:16:53,987 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-09-25 12:16:53,998 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:16:54,008 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:16:54,027 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:16:54,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:16:54,057 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:16:54,057 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:16:54,057 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:16:54,058 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:16:54,058 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:16:54,058 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:16:54,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:16:54,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 12:16:54,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:16:54,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:54,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:54,093 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:54,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-25 12:16:54,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:54,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690828684] [2020-09-25 12:16:54,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:54,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:16:54,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:54,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 12:16:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:54,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:16:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:16:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:54,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:54,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:54,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:54,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:16:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:54,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:54,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:54,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 12:16:54,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:54,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:16:54,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690828684] [2020-09-25 12:16:54,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:16:54,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:16:54,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012559977] [2020-09-25 12:16:54,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:16:54,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:54,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:16:54,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:16:54,604 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 12:16:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:54,698 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 12:16:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:16:54,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:16:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:54,714 INFO L225 Difference]: With dead ends: 37 [2020-09-25 12:16:54,715 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 12:16:54,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:16:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 12:16:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 12:16:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 12:16:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 12:16:54,771 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-25 12:16:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:54,772 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 12:16:54,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:16:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 12:16:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 12:16:54,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:54,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:54,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:16:54,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:54,777 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-25 12:16:54,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:54,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104699332] [2020-09-25 12:16:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:55,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:55,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:16:55,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 12:16:55,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:55,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:16:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:16:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:55,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:55,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:55,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:55,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:55,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:55,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:55,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:55,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:16:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:55,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:55,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:55,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:16:55,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 12:16:55,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:55,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:16:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:55,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:55,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:55,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:16:55,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:55,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:55,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:55,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:55,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:16:55,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104699332] [2020-09-25 12:16:55,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:55,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:16:55,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773847972] [2020-09-25 12:16:55,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:16:55,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:55,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:16:55,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:16:55,416 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-25 12:16:55,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:55,487 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 12:16:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:16:55,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 12:16:55,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:55,489 INFO L225 Difference]: With dead ends: 31 [2020-09-25 12:16:55,489 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 12:16:55,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 12:16:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 12:16:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 12:16:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 12:16:55,499 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-25 12:16:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:55,500 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 12:16:55,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:16:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 12:16:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 12:16:55,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:55,502 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:55,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:16:55,502 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:55,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-25 12:16:55,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:55,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256254777] [2020-09-25 12:16:55,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:55,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:55,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:16:55,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 12:16:55,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:55,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 12:16:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:16:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:55,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:55,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:55,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:55,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:55,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:16:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:55,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:55,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:16:55,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 12:16:55,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:55,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:16:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:56,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:16:56,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:56,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 12:16:56,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:16:56,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:56,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:56,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:16:56,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:56,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:56,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:56,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:16:56,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256254777] [2020-09-25 12:16:56,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:56,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:56,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25679691] [2020-09-25 12:16:56,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:56,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:56,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:56,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:56,150 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-25 12:16:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:56,246 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-25 12:16:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:16:56,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 12:16:56,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:56,248 INFO L225 Difference]: With dead ends: 35 [2020-09-25 12:16:56,248 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 12:16:56,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:16:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 12:16:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 12:16:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 12:16:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 12:16:56,256 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-25 12:16:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:56,257 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 12:16:56,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 12:16:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 12:16:56,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:56,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:56,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:16:56,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-25 12:16:56,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:56,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628886745] [2020-09-25 12:16:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 12:16:56,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 12:16:56,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:16:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 12:16:56,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:16:56,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:56,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:16:56,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:16:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:16:56,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 12:16:56,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:16:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:16:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:16:56,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 12:16:56,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:16:56,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 12:16:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:56,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:56,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:16:56,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:56,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 12:16:56,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:56,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:16:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:57,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:16:57,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 12:16:57,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628886745] [2020-09-25 12:16:57,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:57,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:16:57,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879117242] [2020-09-25 12:16:57,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:16:57,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:57,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:16:57,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:16:57,077 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-25 12:16:57,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:57,216 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 12:16:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:16:57,217 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-25 12:16:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:57,218 INFO L225 Difference]: With dead ends: 39 [2020-09-25 12:16:57,218 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 12:16:57,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:16:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 12:16:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 12:16:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 12:16:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 12:16:57,227 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-25 12:16:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:57,227 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 12:16:57,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:16:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 12:16:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 12:16:57,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:57,229 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:57,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:16:57,230 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-25 12:16:57,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:57,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211513975] [2020-09-25 12:16:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:16:57,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 12:16:57,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:16:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 12:16:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:16:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:57,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:57,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:16:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:57,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:57,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:16:57,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 12:16:57,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:57,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:16:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:16:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:58,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:58,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:16:58,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:58,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 12:16:58,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:58,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:58,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:16:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:58,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:58,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:16:58,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 12:16:58,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:58,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:58,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:16:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:58,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:58,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:16:58,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 12:16:58,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:58,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:16:58,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:58,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:16:58,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:58,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:16:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:16:58,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 12:16:58,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211513975] [2020-09-25 12:16:58,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:58,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:16:58,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737719383] [2020-09-25 12:16:58,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:16:58,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:58,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:16:58,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:16:58,316 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 12:16:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:58,505 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-25 12:16:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:16:58,506 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 12:16:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:58,507 INFO L225 Difference]: With dead ends: 43 [2020-09-25 12:16:58,507 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 12:16:58,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:16:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 12:16:58,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 12:16:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 12:16:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 12:16:58,515 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-25 12:16:58,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:58,516 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 12:16:58,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:16:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 12:16:58,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:16:58,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:58,517 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:58,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:16:58,518 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:58,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:58,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-25 12:16:58,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:58,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322985767] [2020-09-25 12:16:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:58,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 12:16:58,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 12:16:58,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:58,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:16:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:16:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:16:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:58,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:58,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:58,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:16:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:59,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:59,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:16:59,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 12:16:59,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:59,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:16:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:16:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:59,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:59,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:59,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:16:59,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 12:16:59,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:59,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:16:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:16:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:59,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:59,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:16:59,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:59,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 12:16:59,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:59,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:16:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:59,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:16:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:59,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:59,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:16:59,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 12:16:59,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:59,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:59,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:16:59,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:00,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:00,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:00,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:00,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:17:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:00,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:00,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:00,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:17:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:00,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 12:17:00,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322985767] [2020-09-25 12:17:00,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:00,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:17:00,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267550815] [2020-09-25 12:17:00,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:17:00,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:00,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:17:00,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:17:00,163 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-25 12:17:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:00,396 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 12:17:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:17:00,397 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-25 12:17:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:00,398 INFO L225 Difference]: With dead ends: 47 [2020-09-25 12:17:00,398 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:17:00,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:17:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:17:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:17:00,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:17:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 12:17:00,405 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-25 12:17:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:00,406 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 12:17:00,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:17:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 12:17:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 12:17:00,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:00,407 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:00,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:17:00,408 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:00,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-25 12:17:00,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:00,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492748533] [2020-09-25 12:17:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:00,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:17:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-09-25 12:17:00,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:00,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:17:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 12:17:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:17:00,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:17:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:01,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:01,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:01,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-09-25 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:01,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:01,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:01,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 12:17:01,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:01,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:01,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:02,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 12:17:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:02,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:02,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:02,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:02,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:02,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 12:17:02,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:02,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:02,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:02,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:02,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:02,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:02,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:02,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 12:17:02,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:02,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:02,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:02,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:02,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:02,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:17:02,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:02,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:02,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:02,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:02,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:02,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:17:02,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:02,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:02,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:02,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 12:17:02,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492748533] [2020-09-25 12:17:02,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:02,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 12:17:02,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196921088] [2020-09-25 12:17:02,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 12:17:02,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:02,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 12:17:02,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:17:02,640 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-25 12:17:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:02,943 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 12:17:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 12:17:02,944 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 12:17:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:02,945 INFO L225 Difference]: With dead ends: 51 [2020-09-25 12:17:02,945 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 12:17:02,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:17:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 12:17:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 12:17:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 12:17:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 12:17:02,958 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-25 12:17:02,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:02,960 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 12:17:02,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 12:17:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 12:17:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:17:02,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:02,965 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:02,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:17:02,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:02,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:02,966 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-25 12:17:02,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:02,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006339174] [2020-09-25 12:17:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:03,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:03,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:17:03,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:03,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-09-25 12:17:03,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:03,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:17:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 12:17:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:17:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:03,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:03,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:03,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:03,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:03,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:03,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:03,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:04,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:04,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:04,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:04,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-09-25 12:17:04,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:04,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:04,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:04,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:04,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-09-25 12:17:04,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:04,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:05,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 12:17:05,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:05,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:05,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:05,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 12:17:05,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:05,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 12:17:05,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:05,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 12:17:05,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:05,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:05,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:17:05,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:05,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:05,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:05,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:05,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:17:05,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:05,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:05,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 12:17:05,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006339174] [2020-09-25 12:17:05,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:05,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 12:17:05,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225272051] [2020-09-25 12:17:05,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 12:17:05,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:05,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 12:17:05,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:17:05,827 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-25 12:17:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:06,169 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-25 12:17:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 12:17:06,170 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 12:17:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:06,171 INFO L225 Difference]: With dead ends: 55 [2020-09-25 12:17:06,171 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 12:17:06,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:17:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 12:17:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 12:17:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:17:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 12:17:06,184 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-25 12:17:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:06,184 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 12:17:06,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 12:17:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 12:17:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 12:17:06,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:06,187 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:06,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:17:06,188 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:06,189 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-25 12:17:06,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:06,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951875259] [2020-09-25 12:17:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:07,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:07,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 12:17:07,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-09-25 12:17:07,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:07,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:07,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:17:07,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 12:17:07,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:17:07,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:07,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:07,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:07,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:07,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:07,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:07,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:07,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:07,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:07,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:07,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:07,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-09-25 12:17:07,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:07,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:07,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:08,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 12:17:08,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:08,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:08,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:08,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:08,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:08,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-25 12:17:08,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:08,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:09,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:09,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:09,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:09,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 12:17:09,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:09,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:09,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:09,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:09,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:09,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:09,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:09,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 12:17:09,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:09,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:09,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:09,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:09,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:09,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 12:17:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:09,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:09,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:09,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:09,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 12:17:09,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:09,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:09,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:09,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:09,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:09,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:17:09,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:09,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:09,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:09,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:09,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:09,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:09,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:09,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:17:09,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:09,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:09,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 12:17:09,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951875259] [2020-09-25 12:17:09,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:09,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 12:17:09,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441788112] [2020-09-25 12:17:09,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 12:17:09,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:09,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 12:17:09,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:17:09,772 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-25 12:17:10,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:10,232 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 12:17:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 12:17:10,233 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-25 12:17:10,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:10,234 INFO L225 Difference]: With dead ends: 59 [2020-09-25 12:17:10,234 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 12:17:10,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:17:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 12:17:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 12:17:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:17:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 12:17:10,242 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-25 12:17:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:10,242 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 12:17:10,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 12:17:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 12:17:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 12:17:10,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:10,243 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:10,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:17:10,244 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:10,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:10,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-25 12:17:10,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:10,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567595444] [2020-09-25 12:17:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 12:17:11,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-09-25 12:17:11,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:17:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 12:17:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:11,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:11,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:11,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:11,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:11,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:11,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:11,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-09-25 12:17:11,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:11,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:12,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:12,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:12,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:12,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-09-25 12:17:12,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:12,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:13,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-25 12:17:13,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:13,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 12:17:13,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:13,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 12:17:13,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:13,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:13,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:13,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:13,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 12:17:13,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:13,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:14,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:14,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:14,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 12:17:14,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:14,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:14,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:14,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:14,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:14,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:14,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 12:17:14,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:14,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:14,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:14,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:14,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:14,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:17:14,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:14,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:14,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:14,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:14,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:14,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:14,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:17:14,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:14,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 12:17:14,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567595444] [2020-09-25 12:17:14,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:14,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 12:17:14,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065150890] [2020-09-25 12:17:14,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 12:17:14,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 12:17:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-25 12:17:14,509 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-25 12:17:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:15,070 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-25 12:17:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 12:17:15,070 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-25 12:17:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:15,072 INFO L225 Difference]: With dead ends: 63 [2020-09-25 12:17:15,072 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 12:17:15,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 12:17:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 12:17:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 12:17:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 12:17:15,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 12:17:15,085 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-25 12:17:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:15,085 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 12:17:15,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 12:17:15,086 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 12:17:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 12:17:15,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:15,087 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:15,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:17:15,087 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-25 12:17:15,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:15,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837722482] [2020-09-25 12:17:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:16,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:16,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 12:17:16,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:16,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-09-25 12:17:16,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:16,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 12:17:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 12:17:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:17:16,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:16,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:16,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:16,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:16,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:16,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:16,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:16,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:16,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:16,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-09-25 12:17:16,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:16,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-09-25 12:17:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:17,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:17,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:18,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:18,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:18,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:18,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-09-25 12:17:18,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:18,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:18,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:18,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:18,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:18,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-25 12:17:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:18,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:18,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:18,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:18,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 12:17:18,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:18,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:18,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:19,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 12:17:19,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:19,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 12:17:19,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:19,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:19,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 12:17:19,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:19,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:19,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 12:17:19,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:19,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:19,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:17:19,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:19,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:19,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:19,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:19,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:19,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:17:19,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:19,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 12:17:19,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837722482] [2020-09-25 12:17:19,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:19,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 12:17:19,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139558803] [2020-09-25 12:17:19,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 12:17:19,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:19,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 12:17:19,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 12:17:19,866 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-25 12:17:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:20,563 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-25 12:17:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 12:17:20,563 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-25 12:17:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:20,565 INFO L225 Difference]: With dead ends: 67 [2020-09-25 12:17:20,565 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 12:17:20,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 12:17:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 12:17:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 12:17:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 12:17:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-25 12:17:20,573 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-25 12:17:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:20,573 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-25 12:17:20,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 12:17:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-25 12:17:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 12:17:20,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:20,575 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:20,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:17:20,575 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:20,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-25 12:17:20,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:20,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849452766] [2020-09-25 12:17:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 12:17:21,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-25 12:17:21,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 12:17:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 12:17:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:17:21,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:21,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:21,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:21,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:21,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:21,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:21,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:21,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 12:17:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 911 [2020-09-25 12:17:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:22,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:17:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 12:17:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:22,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:23,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:23,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:23,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-09-25 12:17:23,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:23,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:24,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:24,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:24,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-09-25 12:17:24,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:24,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:24,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:24,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:24,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:24,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:24,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 12:17:24,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:24,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:24,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:24,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:24,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:24,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:24,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:24,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-25 12:17:24,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:24,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:24,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:25,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 12:17:25,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:25,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:25,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:25,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 12:17:25,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 12:17:25,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:25,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:25,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:25,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 12:17:25,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:25,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:26,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:26,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:26,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:26,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 12:17:26,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:26,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:26,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:26,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:26,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:17:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:26,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:26,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:26,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:26,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:17:26,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:26,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 12:17:26,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849452766] [2020-09-25 12:17:26,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:26,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 12:17:26,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915525663] [2020-09-25 12:17:26,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 12:17:26,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:26,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 12:17:26,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:17:26,362 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-25 12:17:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:27,202 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 12:17:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 12:17:27,202 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-25 12:17:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:27,204 INFO L225 Difference]: With dead ends: 71 [2020-09-25 12:17:27,204 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:17:27,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 12:17:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:17:27,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 12:17:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 12:17:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-25 12:17:27,223 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-25 12:17:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:27,224 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-25 12:17:27,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 12:17:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-25 12:17:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 12:17:27,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:27,225 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:27,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:17:27,225 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:27,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-25 12:17:27,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:27,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700348279] [2020-09-25 12:17:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 12:17:28,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1245 [2020-09-25 12:17:28,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 12:17:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 12:17:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 12:17:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:28,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:28,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:28,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:28,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:28,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:28,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:29,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:29,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 12:17:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1085 [2020-09-25 12:17:29,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:29,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 12:17:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 12:17:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:29,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:30,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:30,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 12:17:30,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-25 12:17:30,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:30,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:17:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 12:17:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:31,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:31,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:31,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:31,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-09-25 12:17:31,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:31,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:32,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:32,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:32,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:32,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-25 12:17:32,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:32,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:32,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:32,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:32,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:32,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:32,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-09-25 12:17:32,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:32,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:32,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:32,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:33,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:33,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:33,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-09-25 12:17:33,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:33,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:33,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:33,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:33,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:33,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:33,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:33,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 12:17:33,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:33,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:33,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:33,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:33,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:33,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 12:17:33,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:33,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:33,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:34,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:34,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:34,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:34,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 12:17:34,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:34,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:34,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:34,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:34,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:34,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 12:17:34,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:34,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:34,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:34,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:34,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:17:34,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:34,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:34,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:34,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:34,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:34,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:17:34,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:34,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:34,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:34,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:34,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:17:34,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:34,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:17:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-25 12:17:34,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700348279] [2020-09-25 12:17:34,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:34,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 12:17:34,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198960522] [2020-09-25 12:17:34,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 12:17:34,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:34,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 12:17:34,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-25 12:17:34,737 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-25 12:17:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:35,618 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-25 12:17:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 12:17:35,619 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-25 12:17:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:35,620 INFO L225 Difference]: With dead ends: 75 [2020-09-25 12:17:35,620 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 12:17:35,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 12:17:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 12:17:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 12:17:35,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 12:17:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 12:17:35,628 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-25 12:17:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:35,628 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 12:17:35,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 12:17:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 12:17:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 12:17:35,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:35,630 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:35,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:17:35,630 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:35,630 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-25 12:17:35,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:35,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146265709] [2020-09-25 12:17:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:37,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:37,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 12:17:37,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1456 [2020-09-25 12:17:37,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:37,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 12:17:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 12:17:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:17:37,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:37,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:37,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:37,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:37,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:37,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:37,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:37,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:38,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 12:17:38,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-09-25 12:17:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:38,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 12:17:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 12:17:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:39,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:39,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 12:17:39,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-09-25 12:17:39,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:39,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 12:17:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 12:17:39,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:40,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:40,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 12:17:40,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-09-25 12:17:40,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:40,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:17:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 12:17:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:40,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:40,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:41,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:41,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:17:41,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-09-25 12:17:41,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:41,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:17:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:17:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:41,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:42,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:42,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:17:42,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:42,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-25 12:17:42,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:42,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:17:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:17:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:42,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:42,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:42,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 12:17:42,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:42,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:17:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:17:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:42,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:42,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:17:43,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-25 12:17:43,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:17:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:17:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 12:17:43,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 12:17:43,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:17:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:17:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:17:43,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 12:17:43,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:17:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:17:43,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 12:17:43,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:17:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:17:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:43,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:43,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:43,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:17:43,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 12:17:43,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:43,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:17:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:17:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:44,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:44,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:17:44,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:17:44,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:44,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:17:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:17:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:44,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:44,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:17:44,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:17:44,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:44,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:17:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:17:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:44,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:44,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:44,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:44,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:44,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:17:44,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:44,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:44,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:44,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-25 12:17:44,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146265709] [2020-09-25 12:17:44,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:44,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 12:17:44,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356392986] [2020-09-25 12:17:44,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 12:17:44,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:44,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 12:17:44,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-25 12:17:44,473 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-25 12:17:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:45,601 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 12:17:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-25 12:17:45,602 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-25 12:17:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:45,604 INFO L225 Difference]: With dead ends: 79 [2020-09-25 12:17:45,604 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 12:17:45,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 12:17:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 12:17:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 12:17:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 12:17:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-25 12:17:45,611 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-25 12:17:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:45,611 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-25 12:17:45,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-25 12:17:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-25 12:17:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 12:17:45,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:45,613 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:17:45,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 12:17:45,613 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:45,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-25 12:17:45,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:45,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253834077] [2020-09-25 12:17:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-09-25 12:17:47,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:47,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 12:17:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 12:17:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 12:17:47,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:47,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:47,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:47,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:17:47,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:17:47,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:47,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:47,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:17:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:49,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:49,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 12:17:49,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-09-25 12:17:49,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:49,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 12:17:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 12:17:49,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:49,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:50,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:50,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 12:17:50,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-09-25 12:17:50,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:50,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 12:17:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 12:17:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:17:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 12:17:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking...