/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:28:06,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:28:06,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:28:06,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:28:06,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:28:06,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:28:06,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:28:06,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:28:06,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:28:06,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:28:06,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:28:06,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:28:06,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:28:06,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:28:06,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:28:06,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:28:06,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:28:06,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:28:06,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:28:06,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:28:06,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:28:06,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:28:06,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:28:06,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:28:06,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:28:06,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:28:06,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:28:06,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:28:06,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:28:06,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:28:06,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:28:06,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:28:06,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:28:06,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:28:06,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:28:06,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:28:06,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:28:06,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:28:06,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:28:06,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:28:06,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:28:06,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:28:07,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:28:07,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:28:07,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:28:07,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:28:07,009 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:28:07,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:28:07,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:28:07,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:28:07,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:28:07,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:28:07,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:28:07,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:28:07,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:28:07,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:28:07,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:28:07,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:28:07,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:28:07,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:28:07,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:28:07,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:28:07,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:28:07,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:28:07,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:28:07,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:28:07,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:28:07,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:28:07,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:28:07,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:28:07,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:28:07,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:28:07,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:28:07,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:28:07,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:28:07,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:28:07,419 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:28:07,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label35.c [2020-10-26 23:28:07,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fab6605cd/65fcad6eae25457da1df49aa5082166a/FLAGe9a80ee7e [2020-10-26 23:28:08,250 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:28:08,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label35.c [2020-10-26 23:28:08,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fab6605cd/65fcad6eae25457da1df49aa5082166a/FLAGe9a80ee7e [2020-10-26 23:28:08,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fab6605cd/65fcad6eae25457da1df49aa5082166a [2020-10-26 23:28:08,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:28:08,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:28:08,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:28:08,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:28:08,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:28:08,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:08" (1/1) ... [2020-10-26 23:28:08,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3660faa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:08, skipping insertion in model container [2020-10-26 23:28:08,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:08" (1/1) ... [2020-10-26 23:28:08,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:28:08,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:28:09,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:28:09,189 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:28:09,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:28:09,338 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:28:09,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09 WrapperNode [2020-10-26 23:28:09,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:28:09,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:28:09,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:28:09,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:28:09,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (1/1) ... [2020-10-26 23:28:09,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (1/1) ... [2020-10-26 23:28:09,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (1/1) ... [2020-10-26 23:28:09,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (1/1) ... [2020-10-26 23:28:09,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (1/1) ... [2020-10-26 23:28:09,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (1/1) ... [2020-10-26 23:28:09,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (1/1) ... [2020-10-26 23:28:09,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:28:09,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:28:09,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:28:09,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:28:09,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:28:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:28:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:28:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:28:09,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:28:09,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:28:09,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:28:09,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:28:09,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:28:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:28:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:28:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:28:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:28:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:28:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:28:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:28:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:28:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:28:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:28:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:28:11,628 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:28:11,628 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:28:11,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:11 BoogieIcfgContainer [2020-10-26 23:28:11,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:28:11,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:28:11,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:28:11,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:28:11,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:28:08" (1/3) ... [2020-10-26 23:28:11,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4947cae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:11, skipping insertion in model container [2020-10-26 23:28:11,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:09" (2/3) ... [2020-10-26 23:28:11,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4947cae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:11, skipping insertion in model container [2020-10-26 23:28:11,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:11" (3/3) ... [2020-10-26 23:28:11,641 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label35.c [2020-10-26 23:28:11,655 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:28:11,662 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:28:11,676 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:28:11,708 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:28:11,709 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:28:11,709 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:28:11,709 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:28:11,709 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:28:11,709 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:28:11,709 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:28:11,710 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:28:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:28:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-26 23:28:11,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:11,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:11,747 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1321361402, now seen corresponding path program 1 times [2020-10-26 23:28:11,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:11,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139984781] [2020-10-26 23:28:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-26 23:28:12,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-26 23:28:12,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 23:28:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:28:12,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:12,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:28:12,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:12,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:12,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139984781] [2020-10-26 23:28:12,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:12,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:28:12,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871501264] [2020-10-26 23:28:12,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:28:12,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:12,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:28:12,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:28:12,848 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:28:13,000 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:28:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:15,587 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-26 23:28:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:28:15,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-26 23:28:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:15,609 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:28:15,610 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:28:15,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:28:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:28:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-26 23:28:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-26 23:28:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-26 23:28:15,711 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 51 [2020-10-26 23:28:15,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:15,712 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-26 23:28:15,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:28:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-26 23:28:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-26 23:28:15,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:15,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:15,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:28:15,721 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:15,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2145241799, now seen corresponding path program 1 times [2020-10-26 23:28:15,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:15,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941604092] [2020-10-26 23:28:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 23:28:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-26 23:28:17,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:17,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:28:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:17,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:17,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:28:17,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:28:17,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:28:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:17,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941604092] [2020-10-26 23:28:17,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:17,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:28:17,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658750296] [2020-10-26 23:28:17,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:17,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:17,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:17,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:17,817 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 7 states. [2020-10-26 23:28:20,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:20,703 INFO L93 Difference]: Finished difference Result 1132 states and 1845 transitions. [2020-10-26 23:28:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:20,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-26 23:28:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:20,711 INFO L225 Difference]: With dead ends: 1132 [2020-10-26 23:28:20,712 INFO L226 Difference]: Without dead ends: 763 [2020-10-26 23:28:20,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-10-26 23:28:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 563. [2020-10-26 23:28:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-26 23:28:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 833 transitions. [2020-10-26 23:28:20,805 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 833 transitions. Word has length 120 [2020-10-26 23:28:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:20,807 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 833 transitions. [2020-10-26 23:28:20,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 833 transitions. [2020-10-26 23:28:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-26 23:28:20,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:20,812 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:20,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:28:20,813 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:20,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1633202495, now seen corresponding path program 1 times [2020-10-26 23:28:20,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:20,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132045985] [2020-10-26 23:28:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:22,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:28:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-26 23:28:22,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:28:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:22,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:28:22,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:28:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:22,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:22,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:28:22,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:22,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:22,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:22,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:22,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132045985] [2020-10-26 23:28:22,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:22,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:28:22,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184629100] [2020-10-26 23:28:22,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:22,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:22,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:22,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:22,686 INFO L87 Difference]: Start difference. First operand 563 states and 833 transitions. Second operand 7 states. [2020-10-26 23:28:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:25,259 INFO L93 Difference]: Finished difference Result 1330 states and 1926 transitions. [2020-10-26 23:28:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:25,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-26 23:28:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:25,267 INFO L225 Difference]: With dead ends: 1330 [2020-10-26 23:28:25,267 INFO L226 Difference]: Without dead ends: 773 [2020-10-26 23:28:25,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-26 23:28:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 749. [2020-10-26 23:28:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-26 23:28:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1035 transitions. [2020-10-26 23:28:25,309 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1035 transitions. Word has length 124 [2020-10-26 23:28:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:25,310 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 1035 transitions. [2020-10-26 23:28:25,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1035 transitions. [2020-10-26 23:28:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-26 23:28:25,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:25,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:25,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:28:25,320 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:25,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2144006444, now seen corresponding path program 1 times [2020-10-26 23:28:25,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:25,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997513967] [2020-10-26 23:28:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-26 23:28:27,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-26 23:28:27,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:28:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:28:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:27,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:28:27,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:28:27,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:28:27,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:28:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:27,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:28:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:27,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:27,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:28:27,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:28:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 33 proven. 56 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-26 23:28:27,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997513967] [2020-10-26 23:28:27,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:27,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:27,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724021187] [2020-10-26 23:28:27,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:27,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:27,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:27,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:27,836 INFO L87 Difference]: Start difference. First operand 749 states and 1035 transitions. Second operand 8 states. [2020-10-26 23:28:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:31,164 INFO L93 Difference]: Finished difference Result 1557 states and 2351 transitions. [2020-10-26 23:28:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:28:31,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-10-26 23:28:31,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:31,177 INFO L225 Difference]: With dead ends: 1557 [2020-10-26 23:28:31,177 INFO L226 Difference]: Without dead ends: 1145 [2020-10-26 23:28:31,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:28:31,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-10-26 23:28:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 935. [2020-10-26 23:28:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-26 23:28:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1174 transitions. [2020-10-26 23:28:31,250 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1174 transitions. Word has length 208 [2020-10-26 23:28:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:31,252 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1174 transitions. [2020-10-26 23:28:31,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1174 transitions. [2020-10-26 23:28:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-26 23:28:31,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:31,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:31,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:28:31,259 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:31,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:31,260 INFO L82 PathProgramCache]: Analyzing trace with hash 851097408, now seen corresponding path program 1 times [2020-10-26 23:28:31,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:31,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062778536] [2020-10-26 23:28:31,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:31,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:31,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:31,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:31,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-26 23:28:34,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:34,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3273 [2020-10-26 23:28:34,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:28:34,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:34,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:28:34,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:28:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:28:34,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:28:34,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:28:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:28:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:35,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:28:35,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:28:35,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062778536] [2020-10-26 23:28:35,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:35,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:35,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567910808] [2020-10-26 23:28:35,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:35,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:35,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:35,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:35,334 INFO L87 Difference]: Start difference. First operand 935 states and 1174 transitions. Second operand 8 states. [2020-10-26 23:28:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:37,891 INFO L93 Difference]: Finished difference Result 1714 states and 2197 transitions. [2020-10-26 23:28:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:28:37,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-26 23:28:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:37,900 INFO L225 Difference]: With dead ends: 1714 [2020-10-26 23:28:37,900 INFO L226 Difference]: Without dead ends: 1151 [2020-10-26 23:28:37,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:28:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-26 23:28:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1121. [2020-10-26 23:28:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-26 23:28:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1378 transitions. [2020-10-26 23:28:37,953 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1378 transitions. Word has length 218 [2020-10-26 23:28:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:37,955 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1378 transitions. [2020-10-26 23:28:37,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1378 transitions. [2020-10-26 23:28:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-26 23:28:37,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:37,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:37,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:28:37,960 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:37,961 INFO L82 PathProgramCache]: Analyzing trace with hash -5157598, now seen corresponding path program 1 times [2020-10-26 23:28:37,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:37,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040343643] [2020-10-26 23:28:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-26 23:28:43,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:28:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:28:43,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:43,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:28:43,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:43,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:28:43,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:43,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:43,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:43,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:28:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:28:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:28:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:28:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:43,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:28:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 86 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:28:43,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040343643] [2020-10-26 23:28:43,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:43,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:43,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863391867] [2020-10-26 23:28:43,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:43,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:43,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:43,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:43,593 INFO L87 Difference]: Start difference. First operand 1121 states and 1378 transitions. Second operand 7 states. [2020-10-26 23:28:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:46,158 INFO L93 Difference]: Finished difference Result 3200 states and 4028 transitions. [2020-10-26 23:28:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:46,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-26 23:28:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:46,177 INFO L225 Difference]: With dead ends: 3200 [2020-10-26 23:28:46,177 INFO L226 Difference]: Without dead ends: 2267 [2020-10-26 23:28:46,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2020-10-26 23:28:46,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2249. [2020-10-26 23:28:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-10-26 23:28:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2712 transitions. [2020-10-26 23:28:46,283 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2712 transitions. Word has length 230 [2020-10-26 23:28:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:46,283 INFO L481 AbstractCegarLoop]: Abstraction has 2249 states and 2712 transitions. [2020-10-26 23:28:46,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2712 transitions. [2020-10-26 23:28:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-26 23:28:46,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:46,292 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:46,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:28:46,292 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:46,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:46,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1302611453, now seen corresponding path program 1 times [2020-10-26 23:28:46,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:46,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618315089] [2020-10-26 23:28:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:46,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-26 23:28:50,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296 [2020-10-26 23:28:50,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:28:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:28:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:50,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:28:50,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:28:50,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:28:50,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:28:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:28:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:28:51,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-26 23:28:51,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:28:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:28:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 23:28:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:28:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:28:51,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:28:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 214 proven. 69 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-26 23:28:52,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618315089] [2020-10-26 23:28:52,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:52,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:52,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451486210] [2020-10-26 23:28:52,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:52,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:52,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:52,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:52,038 INFO L87 Difference]: Start difference. First operand 2249 states and 2712 transitions. Second operand 8 states. [2020-10-26 23:28:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:55,755 INFO L93 Difference]: Finished difference Result 4684 states and 5855 transitions. [2020-10-26 23:28:55,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:28:55,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 338 [2020-10-26 23:28:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:55,771 INFO L225 Difference]: With dead ends: 4684 [2020-10-26 23:28:55,771 INFO L226 Difference]: Without dead ends: 2245 [2020-10-26 23:28:55,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:28:55,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-10-26 23:28:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 1505. [2020-10-26 23:28:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-10-26 23:28:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1832 transitions. [2020-10-26 23:28:55,842 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1832 transitions. Word has length 338 [2020-10-26 23:28:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:55,842 INFO L481 AbstractCegarLoop]: Abstraction has 1505 states and 1832 transitions. [2020-10-26 23:28:55,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1832 transitions. [2020-10-26 23:28:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-26 23:28:55,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:55,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:55,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:28:55,850 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:55,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:55,851 INFO L82 PathProgramCache]: Analyzing trace with hash 939742983, now seen corresponding path program 1 times [2020-10-26 23:28:55,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:55,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42380685] [2020-10-26 23:28:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-26 23:28:57,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1586 [2020-10-26 23:28:57,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:28:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:28:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:57,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:57,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:28:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:57,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:57,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:28:57,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:57,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:57,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:57,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:28:57,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:28:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:58,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:58,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:28:58,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:28:58,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42380685] [2020-10-26 23:28:58,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:58,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:58,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605096143] [2020-10-26 23:28:58,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:58,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:58,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:58,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:58,381 INFO L87 Difference]: Start difference. First operand 1505 states and 1832 transitions. Second operand 8 states. [2020-10-26 23:29:01,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:01,751 INFO L93 Difference]: Finished difference Result 3758 states and 4723 transitions. [2020-10-26 23:29:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:29:01,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 343 [2020-10-26 23:29:01,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:01,765 INFO L225 Difference]: With dead ends: 3758 [2020-10-26 23:29:01,766 INFO L226 Difference]: Without dead ends: 2259 [2020-10-26 23:29:01,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:29:01,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2020-10-26 23:29:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2253. [2020-10-26 23:29:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2253 states. [2020-10-26 23:29:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 2704 transitions. [2020-10-26 23:29:01,843 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 2704 transitions. Word has length 343 [2020-10-26 23:29:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:01,844 INFO L481 AbstractCegarLoop]: Abstraction has 2253 states and 2704 transitions. [2020-10-26 23:29:01,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 2704 transitions. [2020-10-26 23:29:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-26 23:29:01,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:01,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:01,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:29:01,852 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:01,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1625438373, now seen corresponding path program 1 times [2020-10-26 23:29:01,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:01,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362616972] [2020-10-26 23:29:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-26 23:29:06,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4830 [2020-10-26 23:29:06,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:29:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:29:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:07,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:29:07,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:29:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:07,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-26 23:29:07,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:29:07,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 283 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-26 23:29:08,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362616972] [2020-10-26 23:29:08,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:08,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:08,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970270833] [2020-10-26 23:29:08,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:08,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:08,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:08,526 INFO L87 Difference]: Start difference. First operand 2253 states and 2704 transitions. Second operand 8 states. [2020-10-26 23:29:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:10,717 INFO L93 Difference]: Finished difference Result 4896 states and 5992 transitions. [2020-10-26 23:29:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:29:10,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 353 [2020-10-26 23:29:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:10,731 INFO L225 Difference]: With dead ends: 4896 [2020-10-26 23:29:10,731 INFO L226 Difference]: Without dead ends: 2649 [2020-10-26 23:29:10,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2020-10-26 23:29:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2441. [2020-10-26 23:29:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2441 states. [2020-10-26 23:29:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 2917 transitions. [2020-10-26 23:29:10,816 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 2917 transitions. Word has length 353 [2020-10-26 23:29:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:10,817 INFO L481 AbstractCegarLoop]: Abstraction has 2441 states and 2917 transitions. [2020-10-26 23:29:10,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 2917 transitions. [2020-10-26 23:29:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-26 23:29:10,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:10,828 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:10,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:29:10,828 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:10,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:10,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1481527558, now seen corresponding path program 1 times [2020-10-26 23:29:10,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:10,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510348925] [2020-10-26 23:29:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-26 23:29:15,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:29:15,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:29:15,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:29:15,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:16,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:16,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:29:16,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:29:16,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:29:16,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:29:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:29:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:16,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:29:16,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:29:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 347 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:29:16,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510348925] [2020-10-26 23:29:16,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:16,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:16,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144436551] [2020-10-26 23:29:16,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:16,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:16,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:16,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:16,781 INFO L87 Difference]: Start difference. First operand 2441 states and 2917 transitions. Second operand 7 states. [2020-10-26 23:29:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:20,342 INFO L93 Difference]: Finished difference Result 6190 states and 7570 transitions. [2020-10-26 23:29:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:20,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-10-26 23:29:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:20,363 INFO L225 Difference]: With dead ends: 6190 [2020-10-26 23:29:20,363 INFO L226 Difference]: Without dead ends: 3755 [2020-10-26 23:29:20,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:20,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2020-10-26 23:29:20,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3557. [2020-10-26 23:29:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-10-26 23:29:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4309 transitions. [2020-10-26 23:29:20,486 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4309 transitions. Word has length 437 [2020-10-26 23:29:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:20,487 INFO L481 AbstractCegarLoop]: Abstraction has 3557 states and 4309 transitions. [2020-10-26 23:29:20,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4309 transitions. [2020-10-26 23:29:20,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-26 23:29:20,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:20,501 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:20,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:29:20,501 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:20,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:20,503 INFO L82 PathProgramCache]: Analyzing trace with hash -28815280, now seen corresponding path program 1 times [2020-10-26 23:29:20,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:20,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020763482] [2020-10-26 23:29:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-26 23:29:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:29:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2535 [2020-10-26 23:29:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-26 23:29:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:23,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:23,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:23,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:23,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:29:23,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:29:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:29:23,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:29:23,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:29:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 605 proven. 113 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:29:23,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020763482] [2020-10-26 23:29:23,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:23,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:29:23,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765110399] [2020-10-26 23:29:23,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:23,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:23,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:23,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:23,999 INFO L87 Difference]: Start difference. First operand 3557 states and 4309 transitions. Second operand 8 states. [2020-10-26 23:29:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:26,752 INFO L93 Difference]: Finished difference Result 8790 states and 10785 transitions. [2020-10-26 23:29:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:29:26,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 501 [2020-10-26 23:29:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:26,779 INFO L225 Difference]: With dead ends: 8790 [2020-10-26 23:29:26,779 INFO L226 Difference]: Without dead ends: 5239 [2020-10-26 23:29:26,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:29:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2020-10-26 23:29:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 5041. [2020-10-26 23:29:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5041 states. [2020-10-26 23:29:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5041 states to 5041 states and 6006 transitions. [2020-10-26 23:29:26,938 INFO L78 Accepts]: Start accepts. Automaton has 5041 states and 6006 transitions. Word has length 501 [2020-10-26 23:29:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:26,939 INFO L481 AbstractCegarLoop]: Abstraction has 5041 states and 6006 transitions. [2020-10-26 23:29:26,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5041 states and 6006 transitions. [2020-10-26 23:29:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-26 23:29:26,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:26,947 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:26,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:29:26,947 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash 192054344, now seen corresponding path program 1 times [2020-10-26 23:29:26,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:26,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886635172] [2020-10-26 23:29:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-26 23:29:32,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:29:32,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:29:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 23:29:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:32,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:32,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:32,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:32,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:32,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:29:32,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:32,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:29:32,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:32,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-26 23:29:32,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:29:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:29:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:33,269 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-26 23:29:33,427 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-26 23:29:33,594 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-26 23:29:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-26 23:29:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:34,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:34,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:29:34,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:34,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:29:34,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 23:29:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:34,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 398 proven. 113 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-26 23:29:35,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886635172] [2020-10-26 23:29:35,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:35,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:29:35,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262293220] [2020-10-26 23:29:35,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:29:35,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:35,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:29:35,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:29:35,043 INFO L87 Difference]: Start difference. First operand 5041 states and 6006 transitions. Second operand 13 states. [2020-10-26 23:29:36,282 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2020-10-26 23:29:36,668 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-10-26 23:29:37,052 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-26 23:29:37,502 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 102 [2020-10-26 23:29:38,032 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2020-10-26 23:29:38,414 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-10-26 23:29:38,959 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2020-10-26 23:29:40,518 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 79 [2020-10-26 23:29:40,841 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 82 [2020-10-26 23:29:41,266 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 85 [2020-10-26 23:29:41,706 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-10-26 23:29:42,034 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2020-10-26 23:29:42,536 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 93 [2020-10-26 23:29:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:43,531 INFO L93 Difference]: Finished difference Result 10082 states and 12017 transitions. [2020-10-26 23:29:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:29:43,533 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 561 [2020-10-26 23:29:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:43,557 INFO L225 Difference]: With dead ends: 10082 [2020-10-26 23:29:43,558 INFO L226 Difference]: Without dead ends: 4980 [2020-10-26 23:29:43,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:29:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4980 states. [2020-10-26 23:29:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4980 to 4974. [2020-10-26 23:29:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4974 states. [2020-10-26 23:29:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4974 states to 4974 states and 5936 transitions. [2020-10-26 23:29:43,706 INFO L78 Accepts]: Start accepts. Automaton has 4974 states and 5936 transitions. Word has length 561 [2020-10-26 23:29:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:43,707 INFO L481 AbstractCegarLoop]: Abstraction has 4974 states and 5936 transitions. [2020-10-26 23:29:43,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:29:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4974 states and 5936 transitions. [2020-10-26 23:29:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2020-10-26 23:29:43,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:43,717 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:43,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:29:43,717 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1175765989, now seen corresponding path program 1 times [2020-10-26 23:29:43,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:43,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146486450] [2020-10-26 23:29:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:44,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 680 [2020-10-26 23:29:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2406 [2020-10-26 23:29:46,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:29:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:29:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:46,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:46,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:46,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:46,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:46,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:46,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:46,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:46,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:46,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:46,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:46,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:46,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:29:46,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:46,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:46,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:46,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:46,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:29:46,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:29:46,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:46,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:29:46,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:29:46,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:46,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:46,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:46,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:29:46,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 665 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:29:47,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146486450] [2020-10-26 23:29:47,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:47,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:47,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572028372] [2020-10-26 23:29:47,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:47,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:47,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:47,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:47,166 INFO L87 Difference]: Start difference. First operand 4974 states and 5936 transitions. Second operand 7 states. [2020-10-26 23:29:49,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:49,691 INFO L93 Difference]: Finished difference Result 11790 states and 14374 transitions. [2020-10-26 23:29:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:49,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 660 [2020-10-26 23:29:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:49,733 INFO L225 Difference]: With dead ends: 11790 [2020-10-26 23:29:49,733 INFO L226 Difference]: Without dead ends: 6822 [2020-10-26 23:29:49,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6822 states. [2020-10-26 23:29:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6822 to 6446. [2020-10-26 23:29:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6446 states. [2020-10-26 23:29:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6446 states to 6446 states and 7732 transitions. [2020-10-26 23:29:49,914 INFO L78 Accepts]: Start accepts. Automaton has 6446 states and 7732 transitions. Word has length 660 [2020-10-26 23:29:49,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:49,916 INFO L481 AbstractCegarLoop]: Abstraction has 6446 states and 7732 transitions. [2020-10-26 23:29:49,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 6446 states and 7732 transitions. [2020-10-26 23:29:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2020-10-26 23:29:49,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:49,929 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:49,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:29:49,929 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:49,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:49,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1518087424, now seen corresponding path program 1 times [2020-10-26 23:29:49,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:49,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318080393] [2020-10-26 23:29:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:55,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:55,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-26 23:29:55,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:29:55,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:29:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-26 23:29:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:55,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:55,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:55,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:55,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:55,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:55,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:55,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:55,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:55,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:55,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:55,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:29:55,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:55,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:55,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:55,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:55,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:29:55,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:55,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:55,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:55,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:55,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:29:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:29:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:55,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:55,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:55,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:55,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:29:55,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:29:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:55,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:55,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:56,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:56,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:29:56,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:56,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:29:56,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:56,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:56,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:56,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:29:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-10-26 23:29:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:56,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:56,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:56,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:29:56,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:29:56,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:56,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1611 backedges. 865 proven. 216 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-26 23:29:56,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318080393] [2020-10-26 23:29:56,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:56,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:56,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727609039] [2020-10-26 23:29:56,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:56,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:56,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:56,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:56,493 INFO L87 Difference]: Start difference. First operand 6446 states and 7732 transitions. Second operand 7 states. [2020-10-26 23:29:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:59,513 INFO L93 Difference]: Finished difference Result 13078 states and 15663 transitions. [2020-10-26 23:29:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:29:59,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 674 [2020-10-26 23:29:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:59,536 INFO L225 Difference]: With dead ends: 13078 [2020-10-26 23:29:59,537 INFO L226 Difference]: Without dead ends: 6638 [2020-10-26 23:29:59,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2020-10-26 23:29:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 6262. [2020-10-26 23:29:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6262 states. [2020-10-26 23:29:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6262 states to 6262 states and 7531 transitions. [2020-10-26 23:29:59,716 INFO L78 Accepts]: Start accepts. Automaton has 6262 states and 7531 transitions. Word has length 674 [2020-10-26 23:29:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:59,717 INFO L481 AbstractCegarLoop]: Abstraction has 6262 states and 7531 transitions. [2020-10-26 23:29:59,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6262 states and 7531 transitions. [2020-10-26 23:29:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2020-10-26 23:29:59,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:59,729 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:59,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:29:59,730 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:59,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:59,730 INFO L82 PathProgramCache]: Analyzing trace with hash -162839094, now seen corresponding path program 1 times [2020-10-26 23:29:59,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:59,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427226608] [2020-10-26 23:29:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 758 [2020-10-26 23:30:03,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3464 [2020-10-26 23:30:03,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:30:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:30:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:03,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:03,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:03,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:03,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:03,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:30:03,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:03,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:03,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:03,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:30:03,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:30:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:03,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:30:03,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:30:03,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:30:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:30:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:30:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 23:30:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 581 proven. 75 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2020-10-26 23:30:04,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427226608] [2020-10-26 23:30:04,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:04,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:04,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597169435] [2020-10-26 23:30:04,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:04,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:04,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:04,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:04,227 INFO L87 Difference]: Start difference. First operand 6262 states and 7531 transitions. Second operand 8 states. [2020-10-26 23:30:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:07,574 INFO L93 Difference]: Finished difference Result 14014 states and 16980 transitions. [2020-10-26 23:30:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:30:07,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 736 [2020-10-26 23:30:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:07,600 INFO L225 Difference]: With dead ends: 14014 [2020-10-26 23:30:07,601 INFO L226 Difference]: Without dead ends: 7758 [2020-10-26 23:30:07,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:30:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2020-10-26 23:30:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 7384. [2020-10-26 23:30:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7384 states. [2020-10-26 23:30:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7384 states to 7384 states and 8839 transitions. [2020-10-26 23:30:07,818 INFO L78 Accepts]: Start accepts. Automaton has 7384 states and 8839 transitions. Word has length 736 [2020-10-26 23:30:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:07,820 INFO L481 AbstractCegarLoop]: Abstraction has 7384 states and 8839 transitions. [2020-10-26 23:30:07,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7384 states and 8839 transitions. [2020-10-26 23:30:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2020-10-26 23:30:07,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:07,834 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:07,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:30:07,834 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:07,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1922699794, now seen corresponding path program 1 times [2020-10-26 23:30:07,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:07,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885367227] [2020-10-26 23:30:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 776 [2020-10-26 23:30:13,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:30:13,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:30:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:30:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:30:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:13,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:30:13,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:13,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:13,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:13,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:13,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:13,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:30:13,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:13,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:30:13,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:30:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:14,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:14,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-26 23:30:14,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:14,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:30:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:30:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:14,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:30:14,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:30:14,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:30:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:30:14,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:30:14,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 23:30:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 619 proven. 186 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-10-26 23:30:14,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885367227] [2020-10-26 23:30:14,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:14,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:14,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393633627] [2020-10-26 23:30:14,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:14,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:14,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:14,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:14,774 INFO L87 Difference]: Start difference. First operand 7384 states and 8839 transitions. Second operand 8 states. [2020-10-26 23:30:17,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:17,707 INFO L93 Difference]: Finished difference Result 14960 states and 17897 transitions. [2020-10-26 23:30:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:17,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 754 [2020-10-26 23:30:17,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:17,743 INFO L225 Difference]: With dead ends: 14960 [2020-10-26 23:30:17,743 INFO L226 Difference]: Without dead ends: 7582 [2020-10-26 23:30:17,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:17,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2020-10-26 23:30:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 7566. [2020-10-26 23:30:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7566 states. [2020-10-26 23:30:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7566 states to 7566 states and 8973 transitions. [2020-10-26 23:30:17,921 INFO L78 Accepts]: Start accepts. Automaton has 7566 states and 8973 transitions. Word has length 754 [2020-10-26 23:30:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:17,923 INFO L481 AbstractCegarLoop]: Abstraction has 7566 states and 8973 transitions. [2020-10-26 23:30:17,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 7566 states and 8973 transitions. [2020-10-26 23:30:17,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2020-10-26 23:30:17,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:17,937 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:17,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:30:17,937 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:17,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2009559906, now seen corresponding path program 1 times [2020-10-26 23:30:17,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:17,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009598685] [2020-10-26 23:30:17,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 803 [2020-10-26 23:30:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-26 23:30:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:30:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:30:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:23,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:30:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:23,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:23,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:23,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:23,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:23,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:23,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:30:23,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:23,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:30:23,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:30:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:30:23,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 23:30:23,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:30:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:24,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2020-10-26 23:30:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:24,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:24,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:24,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:30:24,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:30:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 772 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-26 23:30:24,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009598685] [2020-10-26 23:30:24,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:24,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:24,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526765022] [2020-10-26 23:30:24,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:24,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:24,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:24,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:24,968 INFO L87 Difference]: Start difference. First operand 7566 states and 8973 transitions. Second operand 7 states. [2020-10-26 23:30:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:27,482 INFO L93 Difference]: Finished difference Result 15498 states and 18352 transitions. [2020-10-26 23:30:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:30:27,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 781 [2020-10-26 23:30:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:27,509 INFO L225 Difference]: With dead ends: 15498 [2020-10-26 23:30:27,509 INFO L226 Difference]: Without dead ends: 7938 [2020-10-26 23:30:27,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:30:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2020-10-26 23:30:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 7746. [2020-10-26 23:30:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7746 states. [2020-10-26 23:30:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 9091 transitions. [2020-10-26 23:30:27,674 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 9091 transitions. Word has length 781 [2020-10-26 23:30:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:27,676 INFO L481 AbstractCegarLoop]: Abstraction has 7746 states and 9091 transitions. [2020-10-26 23:30:27,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 9091 transitions. [2020-10-26 23:30:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-26 23:30:27,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:27,688 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:27,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:30:27,688 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2146293867, now seen corresponding path program 1 times [2020-10-26 23:30:27,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:27,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237775999] [2020-10-26 23:30:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:29,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:29,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 859 [2020-10-26 23:30:29,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1958 [2020-10-26 23:30:29,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:30:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:30:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:30:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:29,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:29,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:29,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:29,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:29,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:29,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:29,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:29,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:30,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:30,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:30,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:30,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:30,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:30,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:30,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:30,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:30,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:30:30,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:30,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:30,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:30,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:30,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:30:30,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:30,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:30:30,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:30,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:30,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:30:30,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:30:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:30,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:30:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:30,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:30,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:30:30,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:30,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-26 23:30:30,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:30:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2273 backedges. 879 proven. 35 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-26 23:30:31,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237775999] [2020-10-26 23:30:31,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:31,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:31,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173013289] [2020-10-26 23:30:31,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:31,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:31,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:31,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:31,473 INFO L87 Difference]: Start difference. First operand 7746 states and 9091 transitions. Second operand 8 states. [2020-10-26 23:30:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:34,245 INFO L93 Difference]: Finished difference Result 17750 states and 21204 transitions. [2020-10-26 23:30:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:34,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 835 [2020-10-26 23:30:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:34,274 INFO L225 Difference]: With dead ends: 17750 [2020-10-26 23:30:34,274 INFO L226 Difference]: Without dead ends: 9975 [2020-10-26 23:30:34,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9975 states. [2020-10-26 23:30:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9975 to 9410. [2020-10-26 23:30:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9410 states. [2020-10-26 23:30:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9410 states to 9410 states and 11381 transitions. [2020-10-26 23:30:34,477 INFO L78 Accepts]: Start accepts. Automaton has 9410 states and 11381 transitions. Word has length 835 [2020-10-26 23:30:34,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:34,478 INFO L481 AbstractCegarLoop]: Abstraction has 9410 states and 11381 transitions. [2020-10-26 23:30:34,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 9410 states and 11381 transitions. [2020-10-26 23:30:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2020-10-26 23:30:34,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:34,491 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:34,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:30:34,492 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:34,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1515578615, now seen corresponding path program 1 times [2020-10-26 23:30:34,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:34,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94194448] [2020-10-26 23:30:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 892 [2020-10-26 23:30:36,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1488 [2020-10-26 23:30:36,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:30:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:30:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:30:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:36,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:36,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:36,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:30:36,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:36,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:36,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:36,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:30:36,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:36,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:30:36,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:30:36,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:36,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:30:36,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:30:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:30:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:30:36,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:30:36,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:30:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 915 proven. 35 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-26 23:30:37,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94194448] [2020-10-26 23:30:37,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:37,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:37,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331010299] [2020-10-26 23:30:37,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:37,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:37,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:37,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:37,725 INFO L87 Difference]: Start difference. First operand 9410 states and 11381 transitions. Second operand 8 states. [2020-10-26 23:30:40,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:40,718 INFO L93 Difference]: Finished difference Result 19228 states and 23265 transitions. [2020-10-26 23:30:40,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:40,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 868 [2020-10-26 23:30:40,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:40,746 INFO L225 Difference]: With dead ends: 19228 [2020-10-26 23:30:40,746 INFO L226 Difference]: Without dead ends: 9791 [2020-10-26 23:30:40,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9791 states. [2020-10-26 23:30:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9791 to 9410. [2020-10-26 23:30:40,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9410 states. [2020-10-26 23:30:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9410 states to 9410 states and 11371 transitions. [2020-10-26 23:30:40,952 INFO L78 Accepts]: Start accepts. Automaton has 9410 states and 11371 transitions. Word has length 868 [2020-10-26 23:30:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:40,953 INFO L481 AbstractCegarLoop]: Abstraction has 9410 states and 11371 transitions. [2020-10-26 23:30:40,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 9410 states and 11371 transitions. [2020-10-26 23:30:40,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-26 23:30:40,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:40,967 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:40,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:30:40,968 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:40,968 INFO L82 PathProgramCache]: Analyzing trace with hash -726632423, now seen corresponding path program 1 times [2020-10-26 23:30:40,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:40,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107613669] [2020-10-26 23:30:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 893 [2020-10-26 23:30:43,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2168 [2020-10-26 23:30:43,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:30:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:30:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:30:43,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:43,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:43,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:43,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:43,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:30:43,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:43,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:43,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:43,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:30:43,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:43,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:43,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:30:43,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:43,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:43,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:43,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:43,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:30:43,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:43,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:43,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:43,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:43,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:43,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:30:43,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:30:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:30:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:43,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:30:43,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:30:43,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:30:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2310 backedges. 916 proven. 35 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-26 23:30:44,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107613669] [2020-10-26 23:30:44,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:44,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:44,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385685693] [2020-10-26 23:30:44,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:44,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:44,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:44,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:44,564 INFO L87 Difference]: Start difference. First operand 9410 states and 11371 transitions. Second operand 8 states. [2020-10-26 23:30:47,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:47,496 INFO L93 Difference]: Finished difference Result 19333 states and 23376 transitions. [2020-10-26 23:30:47,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:47,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 869 [2020-10-26 23:30:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:47,523 INFO L225 Difference]: With dead ends: 19333 [2020-10-26 23:30:47,524 INFO L226 Difference]: Without dead ends: 9789 [2020-10-26 23:30:47,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9789 states. [2020-10-26 23:30:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9789 to 9774. [2020-10-26 23:30:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9774 states. [2020-10-26 23:30:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 11676 transitions. [2020-10-26 23:30:47,739 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 11676 transitions. Word has length 869 [2020-10-26 23:30:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:47,740 INFO L481 AbstractCegarLoop]: Abstraction has 9774 states and 11676 transitions. [2020-10-26 23:30:47,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 11676 transitions. [2020-10-26 23:30:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-10-26 23:30:47,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:47,757 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:47,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:30:47,758 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1023901559, now seen corresponding path program 1 times [2020-10-26 23:30:47,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:47,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230684032] [2020-10-26 23:30:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 904 [2020-10-26 23:30:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-26 23:30:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:30:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:30:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:53,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:53,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:53,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:53,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:53,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:53,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:30:53,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:53,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:53,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:53,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:53,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:53,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:53,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:53,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:53,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:53,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:53,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:30:53,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:53,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:53,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:30:53,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:30:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:53,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:30:53,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:53,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:30:53,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:30:53,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:30:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:53,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:53,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:53,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:30:53,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:30:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2306 backedges. 905 proven. 72 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2020-10-26 23:30:54,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230684032] [2020-10-26 23:30:54,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:54,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:54,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959939571] [2020-10-26 23:30:54,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:54,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:54,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:54,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:54,445 INFO L87 Difference]: Start difference. First operand 9774 states and 11676 transitions. Second operand 7 states. [2020-10-26 23:30:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:57,005 INFO L93 Difference]: Finished difference Result 20466 states and 24370 transitions. [2020-10-26 23:30:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:30:57,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 880 [2020-10-26 23:30:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:57,035 INFO L225 Difference]: With dead ends: 20466 [2020-10-26 23:30:57,035 INFO L226 Difference]: Without dead ends: 10698 [2020-10-26 23:30:57,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:30:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10698 states. [2020-10-26 23:30:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10698 to 10324. [2020-10-26 23:30:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10324 states. [2020-10-26 23:30:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10324 states to 10324 states and 12288 transitions. [2020-10-26 23:30:57,270 INFO L78 Accepts]: Start accepts. Automaton has 10324 states and 12288 transitions. Word has length 880 [2020-10-26 23:30:57,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:57,271 INFO L481 AbstractCegarLoop]: Abstraction has 10324 states and 12288 transitions. [2020-10-26 23:30:57,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10324 states and 12288 transitions. [2020-10-26 23:30:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-10-26 23:30:57,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:57,289 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:57,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:30:57,289 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:57,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:57,290 INFO L82 PathProgramCache]: Analyzing trace with hash 215652640, now seen corresponding path program 1 times [2020-10-26 23:30:57,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:57,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942049060] [2020-10-26 23:30:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:57,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 958 [2020-10-26 23:31:02,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-26 23:31:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:31:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:02,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:02,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:02,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:02,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:02,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:02,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:02,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:03,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:03,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:03,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:31:03,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:03,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:31:03,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:03,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:31:03,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:03,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:31:03,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:31:03,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:31:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:03,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:31:03,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-26 23:31:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 816 [2020-10-26 23:31:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:03,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 794 proven. 150 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2020-10-26 23:31:03,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942049060] [2020-10-26 23:31:03,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:03,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:03,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388960248] [2020-10-26 23:31:03,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:03,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:03,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:03,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:03,880 INFO L87 Difference]: Start difference. First operand 10324 states and 12288 transitions. Second operand 7 states. [2020-10-26 23:31:06,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:06,714 INFO L93 Difference]: Finished difference Result 21412 states and 25516 transitions. [2020-10-26 23:31:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:31:06,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 932 [2020-10-26 23:31:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:06,744 INFO L225 Difference]: With dead ends: 21412 [2020-10-26 23:31:06,744 INFO L226 Difference]: Without dead ends: 11094 [2020-10-26 23:31:06,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11094 states. [2020-10-26 23:31:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11094 to 11060. [2020-10-26 23:31:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11060 states. [2020-10-26 23:31:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11060 states to 11060 states and 13009 transitions. [2020-10-26 23:31:06,987 INFO L78 Accepts]: Start accepts. Automaton has 11060 states and 13009 transitions. Word has length 932 [2020-10-26 23:31:06,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:06,988 INFO L481 AbstractCegarLoop]: Abstraction has 11060 states and 13009 transitions. [2020-10-26 23:31:06,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 11060 states and 13009 transitions. [2020-10-26 23:31:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-26 23:31:07,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:07,006 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:07,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:31:07,007 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:07,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1726728628, now seen corresponding path program 1 times [2020-10-26 23:31:07,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:07,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544913435] [2020-10-26 23:31:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 976 [2020-10-26 23:31:12,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:31:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:31:12,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:31:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-26 23:31:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:12,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:31:12,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:12,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:12,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:12,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:12,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:12,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:31:12,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:12,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:31:12,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:31:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:31:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:12,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:31:12,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:31:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:31:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:13,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:31:13,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:31:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 834 [2020-10-26 23:31:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:13,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:13,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3044 backedges. 1605 proven. 216 refuted. 0 times theorem prover too weak. 1223 trivial. 0 not checked. [2020-10-26 23:31:13,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544913435] [2020-10-26 23:31:13,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:13,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:13,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508562433] [2020-10-26 23:31:13,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:13,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:13,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:13,954 INFO L87 Difference]: Start difference. First operand 11060 states and 13009 transitions. Second operand 8 states. [2020-10-26 23:31:14,920 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-26 23:31:17,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:17,963 INFO L93 Difference]: Finished difference Result 22488 states and 26396 transitions. [2020-10-26 23:31:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:31:17,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 950 [2020-10-26 23:31:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:17,987 INFO L225 Difference]: With dead ends: 22488 [2020-10-26 23:31:17,988 INFO L226 Difference]: Without dead ends: 11434 [2020-10-26 23:31:18,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-26 23:31:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2020-10-26 23:31:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 11242. [2020-10-26 23:31:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11242 states. [2020-10-26 23:31:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11242 states to 11242 states and 13183 transitions. [2020-10-26 23:31:18,306 INFO L78 Accepts]: Start accepts. Automaton has 11242 states and 13183 transitions. Word has length 950 [2020-10-26 23:31:18,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:18,307 INFO L481 AbstractCegarLoop]: Abstraction has 11242 states and 13183 transitions. [2020-10-26 23:31:18,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:18,307 INFO L276 IsEmpty]: Start isEmpty. Operand 11242 states and 13183 transitions. [2020-10-26 23:31:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2020-10-26 23:31:18,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:18,320 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:18,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:31:18,321 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:18,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:18,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1147389083, now seen corresponding path program 1 times [2020-10-26 23:31:18,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:18,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845316562] [2020-10-26 23:31:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:18,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-26 23:31:21,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3279 [2020-10-26 23:31:21,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:31:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:31:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:22,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:22,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:22,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 23:31:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:22,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:22,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:22,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:22,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:22,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:22,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:31:22,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:31:22,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:22,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:31:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:31:22,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:31:22,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:31:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:31:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:22,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:31:22,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2555 backedges. 713 proven. 35 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2020-10-26 23:31:23,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845316562] [2020-10-26 23:31:23,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:23,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:23,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167417143] [2020-10-26 23:31:23,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:23,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:23,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:23,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:23,307 INFO L87 Difference]: Start difference. First operand 11242 states and 13183 transitions. Second operand 8 states. [2020-10-26 23:31:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:26,181 INFO L93 Difference]: Finished difference Result 24872 states and 29511 transitions. [2020-10-26 23:31:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:26,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 954 [2020-10-26 23:31:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:26,216 INFO L225 Difference]: With dead ends: 24872 [2020-10-26 23:31:26,216 INFO L226 Difference]: Without dead ends: 13461 [2020-10-26 23:31:26,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:26,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13461 states. [2020-10-26 23:31:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13461 to 13078. [2020-10-26 23:31:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13078 states. [2020-10-26 23:31:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13078 states to 13078 states and 15520 transitions. [2020-10-26 23:31:26,495 INFO L78 Accepts]: Start accepts. Automaton has 13078 states and 15520 transitions. Word has length 954 [2020-10-26 23:31:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:26,496 INFO L481 AbstractCegarLoop]: Abstraction has 13078 states and 15520 transitions. [2020-10-26 23:31:26,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:26,497 INFO L276 IsEmpty]: Start isEmpty. Operand 13078 states and 15520 transitions. [2020-10-26 23:31:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2020-10-26 23:31:26,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:26,513 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:26,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 23:31:26,514 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash -242814096, now seen corresponding path program 1 times [2020-10-26 23:31:26,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:26,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384674950] [2020-10-26 23:31:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking...