/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/reducercommutativity/max20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:10:44,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:10:44,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:10:44,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:10:44,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:10:44,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:10:44,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:10:44,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:10:44,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:10:44,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:10:44,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:10:44,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:10:44,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:10:44,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:10:44,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:10:44,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:10:44,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:10:44,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:10:44,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:10:44,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:10:44,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:10:44,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:10:44,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:10:44,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:10:44,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:10:44,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:10:44,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:10:44,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:10:44,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:10:44,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:10:44,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:10:44,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:10:44,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:10:44,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:10:44,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:10:44,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:10:44,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:10:44,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:10:44,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:10:44,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:10:44,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:10:44,308 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 [2020-10-27 04:10:44,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:10:44,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:10:44,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:10:44,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:10:44,366 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:10:44,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:10:44,367 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:10:44,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:10:44,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:10:44,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:10:44,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:10:44,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:10:44,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:10:44,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:10:44,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:10:44,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:10:44,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:10:44,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:10:44,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:10:44,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:10:44,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:10:44,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:10:44,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:10:44,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:10:44,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:10:44,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:10:44,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:10:44,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:10:44,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:10:44,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:10:44,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:10:44,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:10:44,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:10:44,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:10:44,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:10:44,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-27 04:10:44,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8016d2de4/1ad7e90a7bcc4aa5afcd81e9750eebd9/FLAGa1051938d [2020-10-27 04:10:45,534 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:10:45,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-27 04:10:45,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8016d2de4/1ad7e90a7bcc4aa5afcd81e9750eebd9/FLAGa1051938d [2020-10-27 04:10:45,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8016d2de4/1ad7e90a7bcc4aa5afcd81e9750eebd9 [2020-10-27 04:10:45,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:10:45,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:10:45,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:10:45,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:10:45,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:10:45,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:10:45" (1/1) ... [2020-10-27 04:10:45,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26779871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:45, skipping insertion in model container [2020-10-27 04:10:45,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:10:45" (1/1) ... [2020-10-27 04:10:45,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:10:45,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:10:46,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:10:46,192 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:10:46,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:10:46,286 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:10:46,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46 WrapperNode [2020-10-27 04:10:46,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:10:46,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:10:46,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:10:46,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:10:46,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (1/1) ... [2020-10-27 04:10:46,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (1/1) ... [2020-10-27 04:10:46,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (1/1) ... [2020-10-27 04:10:46,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (1/1) ... [2020-10-27 04:10:46,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (1/1) ... [2020-10-27 04:10:46,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (1/1) ... [2020-10-27 04:10:46,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (1/1) ... [2020-10-27 04:10:46,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:10:46,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:10:46,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:10:46,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:10:46,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (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 [2020-10-27 04:10:46,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:10:46,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:10:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:10:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-27 04:10:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:10:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:10:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:10:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-27 04:10:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:10:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:10:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:10:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:10:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:10:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:10:46,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:10:46,947 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:10:46,947 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:10:46,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:10:46 BoogieIcfgContainer [2020-10-27 04:10:46,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:10:46,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:10:46,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:10:46,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:10:46,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:10:45" (1/3) ... [2020-10-27 04:10:46,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41edcf1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:10:46, skipping insertion in model container [2020-10-27 04:10:46,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:10:46" (2/3) ... [2020-10-27 04:10:46,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41edcf1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:10:46, skipping insertion in model container [2020-10-27 04:10:46,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:10:46" (3/3) ... [2020-10-27 04:10:46,963 INFO L111 eAbstractionObserver]: Analyzing ICFG max20-1.i [2020-10-27 04:10:46,976 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:10:46,981 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:10:46,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:10:47,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:10:47,043 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:10:47,044 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:10:47,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:10:47,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:10:47,044 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:10:47,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:10:47,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:10:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 04:10:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:10:47,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:47,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:47,070 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:47,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:47,077 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-27 04:10:47,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:47,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222628780] [2020-10-27 04:10:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:48,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:48,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:10:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:10:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1776 [2020-10-27 04:10:48,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:10:49,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:49,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:49,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:49,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:10:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:49,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:49,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:49,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:10:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:49,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:10:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:49,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:49,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:49,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:49,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:49,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:49,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:49,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:49,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:10:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:10:49,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222628780] [2020-10-27 04:10:49,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:10:49,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:10:49,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933654072] [2020-10-27 04:10:49,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:10:49,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:49,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:10:49,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:10:49,208 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-10-27 04:10:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:49,345 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-27 04:10:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:10:49,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 04:10:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:49,355 INFO L225 Difference]: With dead ends: 66 [2020-10-27 04:10:49,355 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:10:49,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:10:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:10:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 04:10:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 04:10:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 04:10:49,404 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-27 04:10:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:49,405 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 04:10:49,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:10:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 04:10:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 04:10:49,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:49,408 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:49,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:10:49,408 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash -839912781, now seen corresponding path program 1 times [2020-10-27 04:10:49,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:49,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220796178] [2020-10-27 04:10:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2176 [2020-10-27 04:10:51,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:51,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:10:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:51,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:51,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:51,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:51,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:51,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 04:10:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:51,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:10:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:51,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:10:51,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:10:51,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:10:51,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220796178] [2020-10-27 04:10:51,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:51,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 04:10:51,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254612973] [2020-10-27 04:10:51,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:10:51,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:51,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:10:51,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:10:51,747 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-10-27 04:10:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:51,908 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2020-10-27 04:10:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:10:51,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-27 04:10:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:51,910 INFO L225 Difference]: With dead ends: 60 [2020-10-27 04:10:51,911 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 04:10:51,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:10:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 04:10:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-27 04:10:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 04:10:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-27 04:10:51,922 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 36 [2020-10-27 04:10:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:51,922 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-27 04:10:51,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:10:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-27 04:10:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:10:51,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:51,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:51,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:10:51,925 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:51,926 INFO L82 PathProgramCache]: Analyzing trace with hash -467101424, now seen corresponding path program 1 times [2020-10-27 04:10:51,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:51,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857838886] [2020-10-27 04:10:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:56,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:56,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:10:56,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:10:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:10:56,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:56,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:57,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:10:57,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:57,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:10:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:57,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:57,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:57,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:10:57,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 04:10:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:57,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:57,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 04:10:57,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:10:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:57,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:10:57,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:57,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:10:57,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:57,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 04:10:57,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857838886] [2020-10-27 04:10:57,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:57,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 04:10:57,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844131371] [2020-10-27 04:10:57,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:10:57,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:57,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:10:57,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:10:57,189 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 8 states. [2020-10-27 04:10:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:57,447 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2020-10-27 04:10:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:10:57,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-27 04:10:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:57,449 INFO L225 Difference]: With dead ends: 67 [2020-10-27 04:10:57,449 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:10:57,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:10:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:10:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-27 04:10:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 04:10:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-27 04:10:57,472 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 50 [2020-10-27 04:10:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:57,472 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-27 04:10:57,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:10:57,473 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-27 04:10:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 04:10:57,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:57,476 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:57,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:10:57,479 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:57,480 INFO L82 PathProgramCache]: Analyzing trace with hash -240181139, now seen corresponding path program 2 times [2020-10-27 04:10:57,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:57,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785006996] [2020-10-27 04:10:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:02,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 04:11:02,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:11:02,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:11:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:11:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:02,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:02,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:02,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:02,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:11:02,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:11:02,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:11:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:02,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:02,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:11:02,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 04:11:02,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:11:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:11:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:11:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:02,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:02,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:11:02,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:02,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 04:11:02,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:02,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:11:02,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:02,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:11:02,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:11:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:02,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:11:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 04:11:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:11:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:11:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:11:02,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785006996] [2020-10-27 04:11:02,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:02,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 04:11:02,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965241744] [2020-10-27 04:11:02,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:11:02,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:02,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:11:02,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:11:02,844 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-10-27 04:11:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:03,146 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-10-27 04:11:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:11:03,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-27 04:11:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:03,148 INFO L225 Difference]: With dead ends: 77 [2020-10-27 04:11:03,148 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 04:11:03,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:11:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 04:11:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-10-27 04:11:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:11:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-27 04:11:03,166 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 64 [2020-10-27 04:11:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:03,168 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-27 04:11:03,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:11:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-27 04:11:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 04:11:03,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:03,170 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:03,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:11:03,171 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:03,171 INFO L82 PathProgramCache]: Analyzing trace with hash 476260554, now seen corresponding path program 3 times [2020-10-27 04:11:03,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:03,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102696055] [2020-10-27 04:11:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:03,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 04:11:08,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:11:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:11:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:11:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:11:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:08,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:08,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:08,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:08,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:08,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:11:08,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:11:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:08,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:08,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:11:08,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:08,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:11:08,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:11:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:11:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:11:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:08,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:08,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:08,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:11:08,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:11:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:11:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:11:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:08,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:11:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:08,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:08,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:11:08,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:11:08,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:11:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:11:08,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 45 proven. 106 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:11:08,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102696055] [2020-10-27 04:11:08,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:08,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 04:11:08,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115287725] [2020-10-27 04:11:08,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:11:08,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:08,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:11:08,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:11:08,566 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 12 states. [2020-10-27 04:11:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:08,916 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2020-10-27 04:11:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:11:08,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-10-27 04:11:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:08,918 INFO L225 Difference]: With dead ends: 87 [2020-10-27 04:11:08,918 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:11:08,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:11:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:11:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-27 04:11:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 04:11:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-27 04:11:08,938 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 78 [2020-10-27 04:11:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:08,939 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-27 04:11:08,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:11:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-27 04:11:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:11:08,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:08,942 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:08,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:11:08,943 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:08,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:08,944 INFO L82 PathProgramCache]: Analyzing trace with hash -671329753, now seen corresponding path program 4 times [2020-10-27 04:11:08,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:08,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953852963] [2020-10-27 04:11:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:08,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:09,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:13,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:13,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:11:13,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:11:13,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:11:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:11:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:14,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:14,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:14,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:14,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:14,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:14,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:14,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:11:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:14,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:14,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:14,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:11:14,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:14,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:11:14,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:14,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:14,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:11:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:14,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:14,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 04:11:14,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:11:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:14,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:11:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:14,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:11:14,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:14,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 04:11:14,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:11:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:14,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 84 proven. 193 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 04:11:14,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953852963] [2020-10-27 04:11:14,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:14,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 04:11:14,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106801669] [2020-10-27 04:11:14,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:11:14,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:14,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:11:14,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:11:14,382 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 14 states. [2020-10-27 04:11:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:14,718 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2020-10-27 04:11:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:11:14,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-27 04:11:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:14,720 INFO L225 Difference]: With dead ends: 97 [2020-10-27 04:11:14,720 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 04:11:14,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:11:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 04:11:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-10-27 04:11:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 04:11:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-10-27 04:11:14,729 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 92 [2020-10-27 04:11:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:14,729 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-10-27 04:11:14,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:11:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-10-27 04:11:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:11:14,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:14,731 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:14,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:11:14,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:14,732 INFO L82 PathProgramCache]: Analyzing trace with hash 604650628, now seen corresponding path program 5 times [2020-10-27 04:11:14,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:14,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615540574] [2020-10-27 04:11:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:11:19,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:11:19,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:11:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:11:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:19,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:19,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:19,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:19,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:11:19,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:11:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:19,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:19,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:19,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 04:11:19,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:11:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:20,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:11:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:20,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:20,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:11:20,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:11:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:11:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:20,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:20,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:11:20,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:20,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 04:11:20,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:11:20,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:20,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:20,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 135 proven. 306 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 04:11:20,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615540574] [2020-10-27 04:11:20,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:20,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 04:11:20,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718044314] [2020-10-27 04:11:20,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:11:20,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:20,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:11:20,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:11:20,310 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 16 states. [2020-10-27 04:11:20,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:20,800 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2020-10-27 04:11:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:11:20,801 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-27 04:11:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:20,802 INFO L225 Difference]: With dead ends: 107 [2020-10-27 04:11:20,802 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:11:20,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:11:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:11:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-27 04:11:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 04:11:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-10-27 04:11:20,817 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 106 [2020-10-27 04:11:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:20,818 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-10-27 04:11:20,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:11:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-10-27 04:11:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 04:11:20,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:20,825 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:20,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:11:20,825 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:20,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:20,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1240762337, now seen corresponding path program 6 times [2020-10-27 04:11:20,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:20,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842955273] [2020-10-27 04:11:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:20,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:11:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:25,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:11:25,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:25,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:25,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:25,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:25,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:25,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:25,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:25,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:11:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:26,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 04:11:26,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:11:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:11:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:26,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:26,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:26,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 04:11:26,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:11:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:11:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:26,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:26,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:11:26,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:11:26,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:11:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 198 proven. 445 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:11:26,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842955273] [2020-10-27 04:11:26,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:26,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 04:11:26,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479294417] [2020-10-27 04:11:26,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:11:26,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:11:26,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:11:26,444 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 18 states. [2020-10-27 04:11:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:27,095 INFO L93 Difference]: Finished difference Result 117 states and 143 transitions. [2020-10-27 04:11:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:11:27,102 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 120 [2020-10-27 04:11:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:27,103 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:11:27,103 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 04:11:27,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:11:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 04:11:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2020-10-27 04:11:27,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 04:11:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-10-27 04:11:27,112 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 120 [2020-10-27 04:11:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:27,113 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-10-27 04:11:27,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:11:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-10-27 04:11:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 04:11:27,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:27,115 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:27,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:11:27,115 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:27,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:27,116 INFO L82 PathProgramCache]: Analyzing trace with hash 452645950, now seen corresponding path program 7 times [2020-10-27 04:11:27,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:27,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494197100] [2020-10-27 04:11:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:32,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 04:11:32,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:32,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:11:32,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:11:32,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:32,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:32,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:32,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:32,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:32,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:32,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:32,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:32,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:11:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:32,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:32,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:11:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:32,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:32,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 04:11:32,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:11:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:11:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:32,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:32,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:11:32,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 04:11:32,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:32,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:11:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:11:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:11:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 273 proven. 610 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 04:11:33,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494197100] [2020-10-27 04:11:33,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:33,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 04:11:33,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212592709] [2020-10-27 04:11:33,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 04:11:33,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:33,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 04:11:33,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:11:33,027 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 20 states. [2020-10-27 04:11:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:33,657 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2020-10-27 04:11:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:11:33,658 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 134 [2020-10-27 04:11:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:33,659 INFO L225 Difference]: With dead ends: 127 [2020-10-27 04:11:33,659 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 04:11:33,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:11:33,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 04:11:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-27 04:11:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 04:11:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2020-10-27 04:11:33,669 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 134 [2020-10-27 04:11:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:33,669 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2020-10-27 04:11:33,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 04:11:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2020-10-27 04:11:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:11:33,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:33,672 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:33,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:11:33,672 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:33,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:33,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1372274277, now seen corresponding path program 8 times [2020-10-27 04:11:33,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:33,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823856788] [2020-10-27 04:11:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:33,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:33,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 04:11:38,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:11:38,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:11:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:38,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:38,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:38,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:11:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:39,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:11:39,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 04:11:39,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:39,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:11:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:11:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 04:11:39,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 04:11:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:39,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:39,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:11:39,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:39,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 04:11:39,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:11:39,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:39,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:11:39,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1272 backedges. 360 proven. 801 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 04:11:39,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823856788] [2020-10-27 04:11:39,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:39,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 04:11:39,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144735731] [2020-10-27 04:11:39,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 04:11:39,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 04:11:39,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:11:39,594 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 22 states. [2020-10-27 04:11:40,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:40,285 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2020-10-27 04:11:40,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:11:40,286 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2020-10-27 04:11:40,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:40,287 INFO L225 Difference]: With dead ends: 137 [2020-10-27 04:11:40,287 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 04:11:40,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:11:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 04:11:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2020-10-27 04:11:40,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 04:11:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2020-10-27 04:11:40,300 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 148 [2020-10-27 04:11:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:40,301 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2020-10-27 04:11:40,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 04:11:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2020-10-27 04:11:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 04:11:40,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:40,303 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:40,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:11:40,303 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:40,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:40,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1634603016, now seen corresponding path program 9 times [2020-10-27 04:11:40,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:40,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7410298] [2020-10-27 04:11:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:40,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:11:45,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:45,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:11:45,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:45,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:11:45,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:45,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:45,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:45,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:45,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:11:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:45,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:11:45,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 04:11:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:11:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:11:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:11:46,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 04:11:46,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:11:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 04:11:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:46,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:11:46,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 04:11:46,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:11:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:11:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 459 proven. 1018 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:11:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7410298] [2020-10-27 04:11:46,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:46,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 04:11:46,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691876300] [2020-10-27 04:11:46,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 04:11:46,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:46,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 04:11:46,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:11:46,241 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand 24 states. [2020-10-27 04:11:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:47,082 INFO L93 Difference]: Finished difference Result 147 states and 179 transitions. [2020-10-27 04:11:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 04:11:47,083 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 162 [2020-10-27 04:11:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:47,084 INFO L225 Difference]: With dead ends: 147 [2020-10-27 04:11:47,084 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 04:11:47,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=847, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:11:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 04:11:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-10-27 04:11:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 04:11:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-10-27 04:11:47,109 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 162 [2020-10-27 04:11:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:47,110 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-10-27 04:11:47,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 04:11:47,110 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-10-27 04:11:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 04:11:47,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:47,116 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:47,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:11:47,116 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:47,117 INFO L82 PathProgramCache]: Analyzing trace with hash -925237419, now seen corresponding path program 10 times [2020-10-27 04:11:47,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:47,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659370082] [2020-10-27 04:11:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 04:11:52,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 04:11:52,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:11:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:52,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:11:52,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:52,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:11:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:11:52,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 04:11:52,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:11:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:11:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:52,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:11:52,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 04:11:52,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:11:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:11:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:53,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:53,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:11:53,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 04:11:53,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:11:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:11:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1966 backedges. 570 proven. 1261 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-27 04:11:53,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659370082] [2020-10-27 04:11:53,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:11:53,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 04:11:53,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069157430] [2020-10-27 04:11:53,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 04:11:53,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:11:53,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 04:11:53,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:11:53,165 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 26 states. [2020-10-27 04:11:54,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:11:54,074 INFO L93 Difference]: Finished difference Result 157 states and 191 transitions. [2020-10-27 04:11:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:11:54,075 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 176 [2020-10-27 04:11:54,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:11:54,076 INFO L225 Difference]: With dead ends: 157 [2020-10-27 04:11:54,076 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 04:11:54,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:11:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 04:11:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-10-27 04:11:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 04:11:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-10-27 04:11:54,092 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 176 [2020-10-27 04:11:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:11:54,092 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-10-27 04:11:54,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 04:11:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-10-27 04:11:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-27 04:11:54,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:11:54,095 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:11:54,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:11:54,095 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:11:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:11:54,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1985179726, now seen corresponding path program 11 times [2020-10-27 04:11:54,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:11:54,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268610436] [2020-10-27 04:11:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:11:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 04:11:59,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:11:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:11:59,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:11:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:11:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:11:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:11:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:11:59,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:11:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:11:59,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:11:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:11:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:11:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:11:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:11:59,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 04:11:59,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:11:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:11:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:11:59,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:11:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 04:11:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:11:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:11:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:00,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:00,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:12:00,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:00,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 04:12:00,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:12:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:12:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 693 proven. 1530 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-27 04:12:00,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268610436] [2020-10-27 04:12:00,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:00,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 04:12:00,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822894675] [2020-10-27 04:12:00,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 04:12:00,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:00,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 04:12:00,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:12:00,144 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 28 states. [2020-10-27 04:12:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:01,103 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2020-10-27 04:12:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 04:12:01,104 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 190 [2020-10-27 04:12:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:01,105 INFO L225 Difference]: With dead ends: 167 [2020-10-27 04:12:01,105 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:12:01,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 04:12:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:12:01,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-10-27 04:12:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 04:12:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2020-10-27 04:12:01,119 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 190 [2020-10-27 04:12:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:01,119 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2020-10-27 04:12:01,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 04:12:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2020-10-27 04:12:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 04:12:01,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:01,126 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:01,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:12:01,127 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:01,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:01,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2072068367, now seen corresponding path program 12 times [2020-10-27 04:12:01,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:01,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442049152] [2020-10-27 04:12:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:06,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:06,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 04:12:06,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:06,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:12:06,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:12:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:12:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:06,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:12:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:06,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:06,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:12:06,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 04:12:06,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:12:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:12:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 04:12:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:06,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 04:12:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:07,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:12:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 828 proven. 1825 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 04:12:07,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442049152] [2020-10-27 04:12:07,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:07,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 04:12:07,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068753102] [2020-10-27 04:12:07,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 04:12:07,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:07,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 04:12:07,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:12:07,405 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand 30 states. [2020-10-27 04:12:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:08,576 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2020-10-27 04:12:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 04:12:08,577 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 204 [2020-10-27 04:12:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:08,578 INFO L225 Difference]: With dead ends: 177 [2020-10-27 04:12:08,578 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 04:12:08,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=434, Invalid=1372, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:12:08,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 04:12:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2020-10-27 04:12:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:12:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-10-27 04:12:08,588 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 204 [2020-10-27 04:12:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:08,588 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-10-27 04:12:08,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 04:12:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-10-27 04:12:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 04:12:08,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:08,590 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:08,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:12:08,590 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:08,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1264077972, now seen corresponding path program 13 times [2020-10-27 04:12:08,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:08,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922049255] [2020-10-27 04:12:08,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:13,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 04:12:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:12:13,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:12:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:12:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:13,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:12:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:14,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:12:14,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 04:12:14,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:12:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:12:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:12:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:14,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:12:14,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 04:12:14,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:12:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:12:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 04:12:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:14,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:14,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:12:14,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 04:12:14,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:12:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:12:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3292 backedges. 975 proven. 2146 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-27 04:12:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922049255] [2020-10-27 04:12:14,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:14,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 04:12:14,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109795730] [2020-10-27 04:12:14,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 04:12:14,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:14,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 04:12:14,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-10-27 04:12:14,908 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 32 states. [2020-10-27 04:12:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:16,147 INFO L93 Difference]: Finished difference Result 187 states and 227 transitions. [2020-10-27 04:12:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 04:12:16,148 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 218 [2020-10-27 04:12:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:16,149 INFO L225 Difference]: With dead ends: 187 [2020-10-27 04:12:16,149 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 04:12:16,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=495, Invalid=1575, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 04:12:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 04:12:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2020-10-27 04:12:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 04:12:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2020-10-27 04:12:16,159 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 218 [2020-10-27 04:12:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:16,160 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2020-10-27 04:12:16,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 04:12:16,160 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2020-10-27 04:12:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 04:12:16,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:16,162 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:16,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:12:16,162 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2058910007, now seen corresponding path program 14 times [2020-10-27 04:12:16,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:16,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254005573] [2020-10-27 04:12:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:21,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:21,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 04:12:21,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:21,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:12:21,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:12:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:12:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:21,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:21,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:12:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:21,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:21,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:21,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:12:21,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 04:12:21,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:12:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:12:21,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 04:12:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-27 04:12:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:22,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:22,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:12:22,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-27 04:12:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:12:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:12:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3810 backedges. 1134 proven. 2493 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-27 04:12:22,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254005573] [2020-10-27 04:12:22,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:22,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 04:12:22,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654519739] [2020-10-27 04:12:22,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 04:12:22,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:22,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 04:12:22,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:12:22,917 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand 34 states. [2020-10-27 04:12:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:24,288 INFO L93 Difference]: Finished difference Result 197 states and 239 transitions. [2020-10-27 04:12:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 04:12:24,290 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 232 [2020-10-27 04:12:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:24,291 INFO L225 Difference]: With dead ends: 197 [2020-10-27 04:12:24,292 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 04:12:24,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=560, Invalid=1792, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 04:12:24,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 04:12:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2020-10-27 04:12:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 04:12:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-10-27 04:12:24,301 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 232 [2020-10-27 04:12:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:24,301 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-10-27 04:12:24,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 04:12:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-10-27 04:12:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 04:12:24,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:24,303 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:24,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:12:24,303 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:24,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1251976410, now seen corresponding path program 15 times [2020-10-27 04:12:24,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:24,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543679119] [2020-10-27 04:12:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:29,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 04:12:29,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:12:29,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:12:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:12:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:29,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:29,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:29,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:29,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:12:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:12:30,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-27 04:12:30,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:12:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:30,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:12:30,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:12:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:30,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:12:30,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-27 04:12:30,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:12:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:12:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:30,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 04:12:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:31,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:31,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:12:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 04:12:31,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:12:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:12:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4366 backedges. 1305 proven. 2866 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-27 04:12:31,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543679119] [2020-10-27 04:12:31,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:31,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 04:12:31,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140106399] [2020-10-27 04:12:31,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 04:12:31,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:31,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 04:12:31,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:12:31,167 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 36 states. [2020-10-27 04:12:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:32,643 INFO L93 Difference]: Finished difference Result 207 states and 251 transitions. [2020-10-27 04:12:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 04:12:32,644 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 246 [2020-10-27 04:12:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:32,645 INFO L225 Difference]: With dead ends: 207 [2020-10-27 04:12:32,646 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 04:12:32,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=629, Invalid=2023, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 04:12:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 04:12:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2020-10-27 04:12:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 04:12:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-10-27 04:12:32,655 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 246 [2020-10-27 04:12:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:32,656 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-10-27 04:12:32,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 04:12:32,656 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-10-27 04:12:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 04:12:32,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:32,658 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:32,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:12:32,658 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:32,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1120522371, now seen corresponding path program 16 times [2020-10-27 04:12:32,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:32,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661281308] [2020-10-27 04:12:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:32,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:12:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:38,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:12:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:12:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:12:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 04:12:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:39,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 04:12:39,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-27 04:12:39,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:12:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:12:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-27 04:12:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:39,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:39,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:39,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 04:12:39,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-27 04:12:39,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:12:39,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:39,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:12:39,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 1488 proven. 3265 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-27 04:12:39,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661281308] [2020-10-27 04:12:39,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:39,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 04:12:39,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504829544] [2020-10-27 04:12:39,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 04:12:39,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:39,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 04:12:39,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 04:12:39,616 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 38 states. [2020-10-27 04:12:41,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:41,107 INFO L93 Difference]: Finished difference Result 217 states and 263 transitions. [2020-10-27 04:12:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 04:12:41,108 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 260 [2020-10-27 04:12:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:41,109 INFO L225 Difference]: With dead ends: 217 [2020-10-27 04:12:41,110 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 04:12:41,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=702, Invalid=2268, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 04:12:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 04:12:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2020-10-27 04:12:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 04:12:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-10-27 04:12:41,120 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 260 [2020-10-27 04:12:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:41,120 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-10-27 04:12:41,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 04:12:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-10-27 04:12:41,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-27 04:12:41,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:41,122 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:41,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:12:41,123 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:41,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:41,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1624013088, now seen corresponding path program 17 times [2020-10-27 04:12:41,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:41,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3557371] [2020-10-27 04:12:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:41,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:46,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-27 04:12:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:12:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:12:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:46,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:46,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:46,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:46,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:46,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:12:46,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:12:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:46,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:46,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 04:12:46,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:46,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-27 04:12:46,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:12:46,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 04:12:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:12:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-27 04:12:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:48,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 04:12:48,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-27 04:12:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:12:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:12:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5592 backedges. 1683 proven. 3690 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-27 04:12:48,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3557371] [2020-10-27 04:12:48,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:48,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 04:12:48,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389909301] [2020-10-27 04:12:48,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 04:12:48,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 04:12:48,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 04:12:48,364 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 40 states. [2020-10-27 04:12:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:50,127 INFO L93 Difference]: Finished difference Result 227 states and 275 transitions. [2020-10-27 04:12:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 04:12:50,128 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 274 [2020-10-27 04:12:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:50,129 INFO L225 Difference]: With dead ends: 227 [2020-10-27 04:12:50,129 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 04:12:50,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=779, Invalid=2527, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 04:12:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 04:12:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-10-27 04:12:50,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 04:12:50,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-10-27 04:12:50,141 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 274 [2020-10-27 04:12:50,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:50,141 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-10-27 04:12:50,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 04:12:50,141 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-10-27 04:12:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-27 04:12:50,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:50,143 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:50,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:12:50,144 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:50,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1847926333, now seen corresponding path program 18 times [2020-10-27 04:12:50,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:50,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167682425] [2020-10-27 04:12:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:55,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 04:12:55,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:12:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:12:55,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:12:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:12:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:12:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:55,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:12:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:55,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:12:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:12:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:12:55,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:12:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:12:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:12:55,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:55,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:12:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:12:56,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-27 04:12:56,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:12:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 04:12:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 04:12:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:56,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:57,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:57,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:12:57,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-27 04:12:57,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:12:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:12:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 04:12:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:57,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:12:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:12:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6262 backedges. 1890 proven. 4141 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 04:12:58,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167682425] [2020-10-27 04:12:58,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:12:58,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 04:12:58,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63657567] [2020-10-27 04:12:58,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 04:12:58,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:12:58,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 04:12:58,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:12:58,048 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 42 states. [2020-10-27 04:12:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:12:59,672 INFO L93 Difference]: Finished difference Result 236 states and 286 transitions. [2020-10-27 04:12:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 04:12:59,673 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 288 [2020-10-27 04:12:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:12:59,675 INFO L225 Difference]: With dead ends: 236 [2020-10-27 04:12:59,675 INFO L226 Difference]: Without dead ends: 145 [2020-10-27 04:12:59,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=860, Invalid=2800, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 04:12:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-27 04:12:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2020-10-27 04:12:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 04:12:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 165 transitions. [2020-10-27 04:12:59,690 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 165 transitions. Word has length 288 [2020-10-27 04:12:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:12:59,691 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 165 transitions. [2020-10-27 04:12:59,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 04:12:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 165 transitions. [2020-10-27 04:12:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-27 04:12:59,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:12:59,694 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:12:59,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:12:59,695 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:12:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:12:59,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1023527270, now seen corresponding path program 19 times [2020-10-27 04:12:59,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:12:59,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947214563] [2020-10-27 04:12:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:12:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:12:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:12:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:04,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 04:13:04,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 04:13:04,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:13:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 04:13:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 04:13:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:04,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:04,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:04,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:05,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:07,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:07,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 04:13:07,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-10-27 04:13:07,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:13:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 04:13:07,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 04:13:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 04:13:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:09,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:13:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:09,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:10,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:10,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 04:13:10,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-27 04:13:10,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:13:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:13:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6970 backedges. 7 proven. 4106 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2020-10-27 04:13:11,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947214563] [2020-10-27 04:13:11,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:11,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 04:13:11,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795450184] [2020-10-27 04:13:11,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 04:13:11,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:11,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 04:13:11,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=913, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:13:11,102 INFO L87 Difference]: Start difference. First operand 142 states and 165 transitions. Second operand 36 states. [2020-10-27 04:13:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:15,544 INFO L93 Difference]: Finished difference Result 351 states and 436 transitions. [2020-10-27 04:13:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 04:13:15,544 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 302 [2020-10-27 04:13:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:15,549 INFO L225 Difference]: With dead ends: 351 [2020-10-27 04:13:15,549 INFO L226 Difference]: Without dead ends: 257 [2020-10-27 04:13:15,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1982, Invalid=5158, Unknown=0, NotChecked=0, Total=7140 [2020-10-27 04:13:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-27 04:13:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2020-10-27 04:13:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-27 04:13:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 302 transitions. [2020-10-27 04:13:15,574 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 302 transitions. Word has length 302 [2020-10-27 04:13:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:15,574 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 302 transitions. [2020-10-27 04:13:15,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 04:13:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 302 transitions. [2020-10-27 04:13:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-27 04:13:15,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:15,579 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 58, 20, 20, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:15,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:13:15,580 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1120333685, now seen corresponding path program 1 times [2020-10-27 04:13:15,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:15,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766674161] [2020-10-27 04:13:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:15,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:17,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:18,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-27 04:13:21,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5960 [2020-10-27 04:13:21,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 117 [2020-10-27 04:13:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 04:13:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-27 04:13:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:21,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:21,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:21,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:26,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 04:13:26,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:13:26,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 04:13:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 04:13:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:28,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 04:13:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:33,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 04:13:33,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:13:33,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-27 04:13:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 04:13:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:39,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:13:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:40,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:40,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 04:13:40,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:13:40,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231 [2020-10-27 04:13:40,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:40,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:13:40,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:40,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:13:40,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 971 proven. 5908 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2020-10-27 04:13:45,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766674161] [2020-10-27 04:13:45,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:45,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2020-10-27 04:13:45,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321772474] [2020-10-27 04:13:45,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 110 states [2020-10-27 04:13:45,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:45,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2020-10-27 04:13:45,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=11508, Unknown=0, NotChecked=0, Total=11990 [2020-10-27 04:13:45,383 INFO L87 Difference]: Start difference. First operand 249 states and 302 transitions. Second operand 110 states. [2020-10-27 04:13:47,315 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-27 04:13:47,566 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-27 04:13:48,007 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-10-27 04:13:48,610 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-27 04:13:49,429 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-27 04:13:49,648 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-27 04:13:50,164 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-27 04:13:50,489 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-27 04:13:50,733 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-27 04:13:51,434 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-27 04:13:51,886 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-27 04:13:52,687 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-27 04:13:54,015 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2020-10-27 04:13:54,239 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-27 04:13:54,476 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-27 04:13:55,235 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2020-10-27 04:13:55,575 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-27 04:13:55,823 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-27 04:13:56,120 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-27 04:13:56,604 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 04:13:57,138 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-10-27 04:13:57,960 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-27 04:13:58,784 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-27 04:13:59,591 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-27 04:14:00,459 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2020-10-27 04:14:00,674 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-27 04:14:00,905 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-27 04:14:01,157 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-27 04:14:02,169 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2020-10-27 04:14:02,505 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2020-10-27 04:14:02,749 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-27 04:14:03,042 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-27 04:14:03,519 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-27 04:14:04,070 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-27 04:14:04,367 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 04:14:04,703 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-27 04:14:05,164 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-10-27 04:14:05,573 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-27 04:14:06,006 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-10-27 04:14:06,939 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-27 04:14:07,781 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-27 04:14:08,321 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-10-27 04:14:09,174 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2020-10-27 04:14:09,652 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-27 04:14:09,931 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-27 04:14:10,430 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-27 04:14:11,575 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2020-10-27 04:14:11,976 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-10-27 04:14:12,255 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-27 04:14:12,565 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-27 04:14:13,095 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-27 04:14:13,688 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-27 04:14:14,025 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 04:14:14,411 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-27 04:14:14,767 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-27 04:14:15,148 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-10-27 04:14:15,632 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-10-27 04:14:16,068 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-10-27 04:14:16,539 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-10-27 04:14:17,071 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-27 04:14:18,128 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2020-10-27 04:14:18,607 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-27 04:14:19,046 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-27 04:14:19,644 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-27 04:14:20,137 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-27 04:14:21,194 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 82 [2020-10-27 04:14:21,443 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-27 04:14:21,723 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-27 04:14:22,031 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-27 04:14:22,564 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-27 04:14:23,145 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-10-27 04:14:24,531 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2020-10-27 04:14:25,005 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 86