/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=0.2 --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_i25_o25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:09:02,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:09:02,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:09:02,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:09:02,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:09:02,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:09:02,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:09:02,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:09:02,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:09:02,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:09:02,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:09:02,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:09:02,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:09:02,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:09:02,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:09:02,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:09:02,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:09:02,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:09:02,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:09:02,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:09:02,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:09:02,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:09:02,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:09:02,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:09:02,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:09:02,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:09:02,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:09:02,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:09:02,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:09:02,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:09:02,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:09:02,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:09:02,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:09:02,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:09:02,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:09:02,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:09:02,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:09:02,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:09:02,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:09:02,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:09:02,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:09:02,678 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 11:09:02,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:09:02,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:09:02,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:09:02,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:09:02,713 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:09:02,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:09:02,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:09:02,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:09:02,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:09:02,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:09:02,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:09:02,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:09:02,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:09:02,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:09:02,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:09:02,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:09:02,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:09:02,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:09:02,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:09:02,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:09:02,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:09:02,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:09:02,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:09:02,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:09:02,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:09:02,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:09:02,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:09:02,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:09:02,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:09:02,720 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:09:03,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:09:03,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:09:03,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:09:03,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:09:03,203 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:09:03,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2020-09-25 11:09:03,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08bcb2067/3cd7903a51654ee196fe17f4ac4094eb/FLAGedbab111f [2020-09-25 11:09:03,824 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:09:03,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2020-09-25 11:09:03,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08bcb2067/3cd7903a51654ee196fe17f4ac4094eb/FLAGedbab111f [2020-09-25 11:09:04,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08bcb2067/3cd7903a51654ee196fe17f4ac4094eb [2020-09-25 11:09:04,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:09:04,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:09:04,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:09:04,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:09:04,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:09:04,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04, skipping insertion in model container [2020-09-25 11:09:04,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:09:04,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:09:04,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:09:04,439 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:09:04,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:09:04,475 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:09:04,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04 WrapperNode [2020-09-25 11:09:04,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:09:04,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:09:04,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:09:04,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:09:04,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (1/1) ... [2020-09-25 11:09:04,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:09:04,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:09:04,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:09:04,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:09:04,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (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 11:09:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:09:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:09:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 11:09:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:09:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:09:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:09:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 11:09:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:09:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:09:04,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:09:04,860 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:09:04,860 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:09:04,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:09:04 BoogieIcfgContainer [2020-09-25 11:09:04,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:09:04,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:09:04,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:09:04,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:09:04,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:09:04" (1/3) ... [2020-09-25 11:09:04,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4183dbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:09:04, skipping insertion in model container [2020-09-25 11:09:04,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:04" (2/3) ... [2020-09-25 11:09:04,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4183dbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:09:04, skipping insertion in model container [2020-09-25 11:09:04,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:09:04" (3/3) ... [2020-09-25 11:09:04,875 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2020-09-25 11:09:04,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:09:04,895 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:09:04,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:09:04,944 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:09:04,944 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:09:04,944 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:09:04,944 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:09:04,945 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:09:04,945 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:09:04,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:09:04,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:09:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 11:09:04,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:09:04,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:04,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:04,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:04,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 11:09:04,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:04,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323350991] [2020-09-25 11:09:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:09:05,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 11:09:05,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:09:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:09:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:09:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:09:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:05,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:09:05,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:05,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:05,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:05,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:05,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,433 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 11:09:05,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323350991] [2020-09-25 11:09:05,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:09:05,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:09:05,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169825336] [2020-09-25 11:09:05,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:09:05,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:05,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:09:05,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:09:05,471 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 11:09:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:05,564 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 11:09:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:09:05,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:09:05,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:05,582 INFO L225 Difference]: With dead ends: 37 [2020-09-25 11:09:05,582 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 11:09:05,586 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 11:09:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 11:09:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 11:09:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 11:09:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 11:09:05,643 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 11:09:05,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:05,644 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 11:09:05,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:09:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 11:09:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 11:09:05,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:05,647 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, 1] [2020-09-25 11:09:05,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:09:05,648 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:05,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 11:09:05,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:05,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082988342] [2020-09-25 11:09:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:09:06,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:06,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 11:09:06,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:09:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:09:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:09:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:06,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:09:06,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:06,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 11:09:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:06,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:09:06,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:06,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,353 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 11:09:06,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082988342] [2020-09-25 11:09:06,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:06,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:09:06,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744675657] [2020-09-25 11:09:06,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:09:06,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:06,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:09:06,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:09:06,358 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 11:09:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:06,425 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 11:09:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:09:06,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 11:09:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:06,439 INFO L225 Difference]: With dead ends: 34 [2020-09-25 11:09:06,439 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 11:09:06,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:09:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 11:09:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 11:09:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:09:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 11:09:06,448 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 11:09:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:06,448 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 11:09:06,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:09:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 11:09:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 11:09:06,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:06,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:06,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:09:06,451 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:06,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 11:09:06,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:06,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036699933] [2020-09-25 11:09:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 11:09:06,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:06,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-09-25 11:09:06,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:09:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 11:09:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:09:06,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:09:06,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:07,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:07,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:07,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:09:07,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:07,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:07,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:07,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:07,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:07,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:09:07,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:07,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:09:07,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036699933] [2020-09-25 11:09:07,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:07,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:09:07,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221455541] [2020-09-25 11:09:07,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:09:07,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:07,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:09:07,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:09:07,121 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 11:09:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:07,198 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 11:09:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:09:07,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 11:09:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:07,200 INFO L225 Difference]: With dead ends: 39 [2020-09-25 11:09:07,201 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 11:09:07,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:09:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 11:09:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 11:09:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 11:09:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 11:09:07,209 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 11:09:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:07,209 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 11:09:07,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:09:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 11:09:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 11:09:07,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:07,212 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:07,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:09:07,212 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:07,213 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 11:09:07,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:07,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280033391] [2020-09-25 11:09:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:07,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:09:08,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-09-25 11:09:08,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:09:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 11:09:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:09:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:08,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:08,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:09:08,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:08,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:08,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:08,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:08,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 11:09:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:08,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:08,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 11:09:08,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:08,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:08,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:08,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 11:09:08,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:08,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:09:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:09:08,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280033391] [2020-09-25 11:09:08,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:08,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:09:08,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691701238] [2020-09-25 11:09:08,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:09:08,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:08,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:09:08,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:09:08,604 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 11:09:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:08,712 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 11:09:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:09:08,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 11:09:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:08,715 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:09:08,715 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 11:09:08,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:08,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 11:09:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 11:09:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 11:09:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 11:09:08,730 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 11:09:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:08,732 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 11:09:08,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:09:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 11:09:08,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 11:09:08,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:08,734 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:08,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:09:08,735 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:08,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:08,735 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 11:09:08,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:08,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550750987] [2020-09-25 11:09:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-09-25 11:09:10,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:09:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 11:09:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 11:09:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:10,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:10,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:10,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 11:09:10,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:10,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 11:09:10,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:10,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 11:09:10,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:10,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:10,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:09:10,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:10,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:09:10,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:09:10,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550750987] [2020-09-25 11:09:10,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:10,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:09:10,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239028577] [2020-09-25 11:09:10,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:09:10,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:10,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:09:10,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:09:10,777 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 11:09:10,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:10,894 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 11:09:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:09:10,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 11:09:10,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:10,896 INFO L225 Difference]: With dead ends: 49 [2020-09-25 11:09:10,896 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 11:09:10,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:09:10,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 11:09:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 11:09:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 11:09:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 11:09:10,904 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 11:09:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:10,905 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 11:09:10,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:09:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 11:09:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 11:09:10,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:10,907 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:10,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:09:10,907 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:10,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:10,908 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 11:09:10,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:10,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137240992] [2020-09-25 11:09:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:12,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:12,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:09:12,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:12,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1962 [2020-09-25 11:09:12,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:12,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:12,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:09:12,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 11:09:12,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:09:12,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:12,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:12,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:12,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:12,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:12,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:13,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:13,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:13,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 11:09:13,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:13,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:13,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:13,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:13,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:13,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 11:09:13,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:13,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:13,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:13,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:13,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:13,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 11:09:13,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:13,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:13,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:13,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:13,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:13,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:13,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:13,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:09:13,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:13,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:13,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:13,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:13,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:13,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:09:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:13,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:13,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:13,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:13,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:09:13,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:13,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:13,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 11:09:13,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137240992] [2020-09-25 11:09:13,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:13,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:09:13,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387024890] [2020-09-25 11:09:13,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:09:13,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:13,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:09:13,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:13,680 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 11:09:13,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:13,841 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 11:09:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:09:13,841 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 11:09:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:13,843 INFO L225 Difference]: With dead ends: 54 [2020-09-25 11:09:13,843 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 11:09:13,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:09:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 11:09:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 11:09:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 11:09:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 11:09:13,852 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 11:09:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:13,852 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 11:09:13,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:09:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 11:09:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 11:09:13,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:13,854 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:13,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:09:13,855 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:13,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 11:09:13,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:13,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235944318] [2020-09-25 11:09:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:09:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2634 [2020-09-25 11:09:16,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:09:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 11:09:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 11:09:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:16,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:09:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:16,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-25 11:09:16,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:09:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:17,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 11:09:17,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:17,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:17,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 11:09:17,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:17,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:09:17,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:17,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 11:09:17,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:17,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:17,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:09:17,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:17,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:17,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 11:09:17,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235944318] [2020-09-25 11:09:17,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:17,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 11:09:17,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825746942] [2020-09-25 11:09:17,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 11:09:17,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:17,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 11:09:17,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:09:17,685 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 11:09:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:17,831 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 11:09:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 11:09:17,831 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 11:09:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:17,832 INFO L225 Difference]: With dead ends: 59 [2020-09-25 11:09:17,833 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 11:09:17,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 11:09:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 11:09:17,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 11:09:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 11:09:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 11:09:17,847 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 11:09:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:17,847 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 11:09:17,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 11:09:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 11:09:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 11:09:17,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:17,849 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:17,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:09:17,852 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:17,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:17,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 11:09:17,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:17,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141903236] [2020-09-25 11:09:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:18,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 11:09:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3411 [2020-09-25 11:09:21,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:09:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 11:09:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:21,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 11:09:21,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:09:21,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:21,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:09:21,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:22,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 11:09:22,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:09:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:22,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 11:09:22,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:22,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 11:09:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 11:09:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:22,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 11:09:22,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:22,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:22,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:09:22,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:22,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:22,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:22,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:09:22,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:22,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 7 proven. 131 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-25 11:09:22,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141903236] [2020-09-25 11:09:22,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:22,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:09:22,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761236956] [2020-09-25 11:09:22,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:09:22,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:22,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:09:22,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:09:22,977 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 14 states. [2020-09-25 11:09:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:23,199 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 11:09:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:09:23,201 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 11:09:23,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:23,203 INFO L225 Difference]: With dead ends: 64 [2020-09-25 11:09:23,206 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 11:09:23,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:09:23,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 11:09:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 11:09:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 11:09:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 11:09:23,220 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 11:09:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:23,220 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 11:09:23,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:09:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 11:09:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 11:09:23,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:23,223 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:23,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:09:23,224 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:23,224 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 11:09:23,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:23,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357157548] [2020-09-25 11:09:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:23,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:27,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 11:09:27,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4609 [2020-09-25 11:09:27,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:27,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:09:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 11:09:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 11:09:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:27,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:27,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:27,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:27,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:27,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:27,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:27,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:27,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:27,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 11:09:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:09:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:28,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:28,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 11:09:28,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:09:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:28,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:28,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 11:09:28,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:09:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:29,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 11:09:29,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:29,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 11:09:29,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:29,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 11:09:29,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:29,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 11:09:29,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:29,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:29,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 11:09:29,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:29,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:09:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:09:29,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 11:09:29,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357157548] [2020-09-25 11:09:29,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:29,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 11:09:29,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764597321] [2020-09-25 11:09:29,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 11:09:29,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 11:09:29,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:09:29,648 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 11:09:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:29,823 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 11:09:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 11:09:29,825 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 11:09:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:29,827 INFO L225 Difference]: With dead ends: 69 [2020-09-25 11:09:29,827 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 11:09:29,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:09:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 11:09:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 11:09:29,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 11:09:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 11:09:29,835 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 11:09:29,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:29,835 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 11:09:29,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 11:09:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 11:09:29,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 11:09:29,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:29,837 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:29,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:09:29,837 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:29,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:29,838 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 11:09:29,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:29,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258639024] [2020-09-25 11:09:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:34,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:34,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 11:09:34,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:34,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:09:34,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:34,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:09:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:34,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:34,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:34,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:34,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:34,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:34,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:35,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:35,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:35,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 11:09:35,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:35,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:09:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 11:09:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:35,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:35,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:35,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:35,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-25 11:09:35,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:35,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 11:09:35,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:35,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:36,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 11:09:36,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:36,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:36,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 11:09:36,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:09:36,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:36,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:36,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 11:09:36,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:36,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:36,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:09:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:36,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 11:09:36,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:36,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:36,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:36,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:09:36,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:36,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:36,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:09:36,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:09:36,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 20 proven. 222 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-25 11:09:37,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258639024] [2020-09-25 11:09:37,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:37,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:09:37,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201480777] [2020-09-25 11:09:37,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:09:37,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:37,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:09:37,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:37,047 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 15 states. [2020-09-25 11:09:37,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:37,242 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 11:09:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:09:37,243 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-09-25 11:09:37,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:37,244 INFO L225 Difference]: With dead ends: 74 [2020-09-25 11:09:37,244 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 11:09:37,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:09:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 11:09:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 11:09:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 11:09:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 11:09:37,261 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 11:09:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:37,262 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 11:09:37,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:09:37,262 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 11:09:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 11:09:37,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:37,266 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:37,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:09:37,266 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:37,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:37,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 11:09:37,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:37,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657990502] [2020-09-25 11:09:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:37,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:42,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:42,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:09:42,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:09:42,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:42,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 11:09:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 11:09:42,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:09:42,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:42,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:42,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:42,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:42,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:42,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:42,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:42,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:42,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:42,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 11:09:42,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-09-25 11:09:42,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:42,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:09:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 11:09:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:43,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:43,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:43,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-25 11:09:43,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:43,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:09:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:43,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 11:09:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:43,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:09:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:44,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:44,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:44,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 11:09:44,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:44,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:09:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:44,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:44,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:44,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 11:09:44,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:44,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:09:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:44,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:44,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:44,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:44,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 11:09:44,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:44,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:44,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 11:09:44,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:44,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:44,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:44,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:44,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:44,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 11:09:44,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:44,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:44,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:44,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:44,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:44,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:44,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:44,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:44,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:44,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:44,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 11:09:44,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:44,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:44,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:44,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:44,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:44,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:09:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:44,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:45,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:45,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:45,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:09:45,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:45,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 11:09:45,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657990502] [2020-09-25 11:09:45,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:45,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 11:09:45,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556728038] [2020-09-25 11:09:45,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 11:09:45,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:45,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 11:09:45,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:09:45,084 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-25 11:09:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:45,333 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 11:09:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 11:09:45,336 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-25 11:09:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:45,338 INFO L225 Difference]: With dead ends: 79 [2020-09-25 11:09:45,338 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 11:09:45,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 11:09:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 11:09:45,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 11:09:45,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 11:09:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 11:09:45,347 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 11:09:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:45,347 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 11:09:45,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 11:09:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 11:09:45,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 11:09:45,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:45,348 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:45,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:09:45,349 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 11:09:45,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:45,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640022160] [2020-09-25 11:09:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:45,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:50,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:50,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 11:09:50,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:50,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:09:50,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:50,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 11:09:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 11:09:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 11:09:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:50,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:50,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:50,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:50,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:50,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:50,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:50,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:51,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 11:09:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-25 11:09:51,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:51,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 11:09:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 11:09:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:51,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:51,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:51,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 11:09:51,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-25 11:09:51,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:51,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:09:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 11:09:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:51,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:52,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:52,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:52,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-25 11:09:52,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:52,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:09:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:52,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-25 11:09:52,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:52,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:09:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:52,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:52,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:52,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:52,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:52,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:52,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 11:09:52,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:52,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:09:52,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:53,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:53,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:53,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 11:09:53,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:53,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:09:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:53,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:53,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:53,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:53,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 11:09:53,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:53,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:53,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:53,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:53,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 11:09:53,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:53,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:53,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:53,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:53,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:53,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 11:09:53,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:53,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:53,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:53,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:53,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:53,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:53,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:09:53,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:53,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:53,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:53,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:09:53,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:53,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:53,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:53,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:53,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:53,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:53,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:53,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:53,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 11:09:54,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640022160] [2020-09-25 11:09:54,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:54,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 11:09:54,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823449338] [2020-09-25 11:09:54,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 11:09:54,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:54,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 11:09:54,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:09:54,063 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2020-09-25 11:09:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:54,299 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 11:09:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 11:09:54,300 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-09-25 11:09:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:54,301 INFO L225 Difference]: With dead ends: 84 [2020-09-25 11:09:54,301 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 11:09:54,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 11:09:54,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 11:09:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 11:09:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 11:09:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 11:09:54,318 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 11:09:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:54,320 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 11:09:54,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 11:09:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 11:09:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 11:09:54,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:54,322 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:54,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:09:54,322 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:54,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 11:09:54,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:54,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199442783] [2020-09-25 11:09:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking...