/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=DEEPEST --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/sep05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:43:04,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:43:04,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:43:04,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:43:04,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:43:04,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:43:04,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:43:04,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:43:04,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:43:04,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:43:04,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:43:04,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:43:04,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:43:04,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:43:04,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:43:04,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:43:04,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:43:04,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:43:04,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:43:04,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:43:04,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:43:04,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:43:04,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:43:04,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:43:04,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:43:04,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:43:04,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:43:04,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:43:04,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:43:04,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:43:04,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:43:04,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:43:04,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:43:04,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:43:04,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:43:04,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:43:04,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:43:04,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:43:04,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:43:04,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:43:04,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:43:04,467 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 22:43:04,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:43:04,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:43:04,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:43:04,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:43:04,517 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:43:04,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:43:04,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:43:04,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:43:04,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:43:04,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:43:04,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:43:04,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:43:04,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:43:04,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:43:04,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:43:04,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:43:04,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:43:04,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:43:04,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:43:04,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:43:04,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:43:04,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:43:04,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:43:04,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:43:04,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:43:04,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:43:04,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:43:04,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:43:04,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:43:04,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:43:04,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:43:04,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:43:04,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:43:04,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:43:04,956 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:43:04,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep05-1.i [2020-10-27 22:43:05,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aa096129/80676b323a82466eb37f25e3cc3df648/FLAG747aaa375 [2020-10-27 22:43:05,607 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:43:05,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep05-1.i [2020-10-27 22:43:05,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aa096129/80676b323a82466eb37f25e3cc3df648/FLAG747aaa375 [2020-10-27 22:43:05,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aa096129/80676b323a82466eb37f25e3cc3df648 [2020-10-27 22:43:05,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:43:05,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:43:05,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:43:05,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:43:05,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:43:05,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:43:05" (1/1) ... [2020-10-27 22:43:05,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65cf4b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:05, skipping insertion in model container [2020-10-27 22:43:05,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:43:05" (1/1) ... [2020-10-27 22:43:05,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:43:05,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:43:06,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:43:06,158 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:43:06,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:43:06,201 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:43:06,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06 WrapperNode [2020-10-27 22:43:06,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:43:06,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:43:06,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:43:06,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:43:06,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (1/1) ... [2020-10-27 22:43:06,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (1/1) ... [2020-10-27 22:43:06,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (1/1) ... [2020-10-27 22:43:06,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (1/1) ... [2020-10-27 22:43:06,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (1/1) ... [2020-10-27 22:43:06,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (1/1) ... [2020-10-27 22:43:06,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (1/1) ... [2020-10-27 22:43:06,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:43:06,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:43:06,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:43:06,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:43:06,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (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 22:43:06,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:43:06,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:43:06,332 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:43:06,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-27 22:43:06,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:43:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:43:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:43:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 22:43:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 22:43:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:43:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:43:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:43:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-27 22:43:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:43:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:43:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:43:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:43:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:43:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:43:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:43:06,858 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:43:06,858 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 22:43:06,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:43:06 BoogieIcfgContainer [2020-10-27 22:43:06,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:43:06,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:43:06,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:43:06,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:43:06,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:43:05" (1/3) ... [2020-10-27 22:43:06,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d11f625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:43:06, skipping insertion in model container [2020-10-27 22:43:06,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:43:06" (2/3) ... [2020-10-27 22:43:06,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d11f625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:43:06, skipping insertion in model container [2020-10-27 22:43:06,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:43:06" (3/3) ... [2020-10-27 22:43:06,869 INFO L111 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2020-10-27 22:43:06,880 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:43:06,886 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:43:06,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:43:06,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:43:06,924 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:43:06,925 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:43:06,925 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:43:06,925 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:43:06,925 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:43:06,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:43:06,925 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:43:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 22:43:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:43:06,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:06,950 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 22:43:06,950 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:06,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-27 22:43:06,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:06,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380750284] [2020-10-27 22:43:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:07,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:43:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:43:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-27 22:43:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:43:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:43:08,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:08,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:43:08,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:08,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:08,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:43:08,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:43:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:43:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:08,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:08,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:08,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:43:08,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:43:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:08,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:08,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:43:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:08,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:08,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:08,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:43:08,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:43:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:08,642 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 22:43:08,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380750284] [2020-10-27 22:43:08,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:43:08,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 22:43:08,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993782127] [2020-10-27 22:43:08,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 22:43:08,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:08,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 22:43:08,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:43:08,668 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 22:43:08,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:08,813 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-27 22:43:08,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 22:43:08,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 22:43:08,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:08,829 INFO L225 Difference]: With dead ends: 62 [2020-10-27 22:43:08,829 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 22:43:08,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:43:08,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 22:43:08,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 22:43:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 22:43:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-27 22:43:08,877 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2020-10-27 22:43:08,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:08,878 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-27 22:43:08,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 22:43:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-27 22:43:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:43:08,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:08,880 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 22:43:08,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:43:08,881 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1899018129, now seen corresponding path program 1 times [2020-10-27 22:43:08,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:08,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163545584] [2020-10-27 22:43:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:08,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:09,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:43:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:43:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1602 [2020-10-27 22:43:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:43:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:43:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:43:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:10,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:43:10,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:10,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:43:10,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:43:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:43:10,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:43:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:10,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:43:10,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:43:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:43:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:43:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:43:10,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:43:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:43:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:43:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,658 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 22:43:10,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163545584] [2020-10-27 22:43:10,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:43:10,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:43:10,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404954129] [2020-10-27 22:43:10,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:43:10,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:43:10,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:43:10,665 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-27 22:43:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:10,865 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-10-27 22:43:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:43:10,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 22:43:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:10,867 INFO L225 Difference]: With dead ends: 52 [2020-10-27 22:43:10,867 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 22:43:10,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:43:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 22:43:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 22:43:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 22:43:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-27 22:43:10,881 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-27 22:43:10,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:10,881 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-27 22:43:10,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:43:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-27 22:43:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 22:43:10,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:10,883 INFO L422 BasicCegarLoop]: trace histogram [3, 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 22:43:10,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:43:10,884 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:10,884 INFO L82 PathProgramCache]: Analyzing trace with hash 208370082, now seen corresponding path program 1 times [2020-10-27 22:43:10,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:10,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533292204] [2020-10-27 22:43:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:15,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:15,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 22:43:15,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:43:15,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:43:15,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:43:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 22:43:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:43:15,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:43:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:15,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:15,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:15,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:15,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:43:15,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:15,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:43:15,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:15,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:16,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:43:16,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:43:16,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:43:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:43:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 22:43:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:43:16,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:16,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:43:16,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:43:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:43:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:43:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:43:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:16,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:43:16,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:43:16,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:43:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:43:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 22:43:16,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533292204] [2020-10-27 22:43:16,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:16,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 22:43:16,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363862646] [2020-10-27 22:43:16,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:43:16,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:16,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:43:16,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:43:16,114 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-27 22:43:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:16,410 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2020-10-27 22:43:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 22:43:16,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-27 22:43:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:16,413 INFO L225 Difference]: With dead ends: 56 [2020-10-27 22:43:16,413 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 22:43:16,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:43:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 22:43:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-27 22:43:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 22:43:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-27 22:43:16,428 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 43 [2020-10-27 22:43:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:16,428 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-27 22:43:16,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:43:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-27 22:43:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 22:43:16,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:16,433 INFO L422 BasicCegarLoop]: trace histogram [6, 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 22:43:16,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:43:16,434 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:16,434 INFO L82 PathProgramCache]: Analyzing trace with hash 811940529, now seen corresponding path program 2 times [2020-10-27 22:43:16,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:16,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102687816] [2020-10-27 22:43:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:16,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:21,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:21,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:43:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:43:21,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:43:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:43:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:43:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:21,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:21,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:21,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:21,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:21,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:21,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:43:21,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:43:21,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:21,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:21,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:43:21,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:21,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 22:43:21,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:43:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:43:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:21,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:43:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:21,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:21,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:21,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:43:21,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 22:43:21,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:43:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:43:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:43:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:21,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:21,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:43:21,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 22:43:21,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:43:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:43:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 22:43:21,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102687816] [2020-10-27 22:43:21,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:21,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 22:43:21,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903158779] [2020-10-27 22:43:21,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:43:21,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:21,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:43:21,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:43:21,750 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-27 22:43:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:22,080 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-10-27 22:43:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:43:22,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-27 22:43:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:22,082 INFO L225 Difference]: With dead ends: 62 [2020-10-27 22:43:22,083 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 22:43:22,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:43:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 22:43:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-27 22:43:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 22:43:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-27 22:43:22,096 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 52 [2020-10-27 22:43:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:22,097 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-27 22:43:22,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:43:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-27 22:43:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 22:43:22,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:22,101 INFO L422 BasicCegarLoop]: trace histogram [9, 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 22:43:22,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:43:22,101 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:22,102 INFO L82 PathProgramCache]: Analyzing trace with hash -610286718, now seen corresponding path program 3 times [2020-10-27 22:43:22,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:22,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811693090] [2020-10-27 22:43:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:22,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:27,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 22:43:27,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 22:43:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:43:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:43:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:43:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:27,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:27,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:43:27,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:27,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:43:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:43:27,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:43:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:43:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:27,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:43:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:27,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:43:27,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:43:27,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:43:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:43:27,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:43:27,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 22:43:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:27,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:27,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:43:27,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 22:43:27,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:43:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:43:27,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 22:43:27,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811693090] [2020-10-27 22:43:27,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:27,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:43:27,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692866129] [2020-10-27 22:43:27,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:43:27,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:27,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:43:27,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:43:27,501 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 7 states. [2020-10-27 22:43:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:27,872 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2020-10-27 22:43:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:43:27,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-27 22:43:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:27,874 INFO L225 Difference]: With dead ends: 68 [2020-10-27 22:43:27,874 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 22:43:27,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:43:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 22:43:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-27 22:43:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 22:43:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-27 22:43:27,887 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 61 [2020-10-27 22:43:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:27,888 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-27 22:43:27,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:43:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-27 22:43:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:43:27,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:27,892 INFO L422 BasicCegarLoop]: trace histogram [12, 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 22:43:27,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:43:27,892 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:27,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1355680303, now seen corresponding path program 4 times [2020-10-27 22:43:27,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:27,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124499565] [2020-10-27 22:43:27,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:32,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 22:43:32,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:43:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:43:32,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:43:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:43:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:43:32,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:32,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:32,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:32,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:32,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:32,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:33,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:43:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 22:43:33,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:43:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:43:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 22:43:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:33,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:43:33,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:33,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 22:43:33,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:33,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:43:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:43:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:43:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:33,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:43:33,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:33,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 22:43:33,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:43:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:43:33,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 22:43:33,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124499565] [2020-10-27 22:43:33,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:33,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:43:33,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191302797] [2020-10-27 22:43:33,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:43:33,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:33,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:43:33,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:43:33,336 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 8 states. [2020-10-27 22:43:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:33,796 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2020-10-27 22:43:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:43:33,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-27 22:43:33,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:33,798 INFO L225 Difference]: With dead ends: 72 [2020-10-27 22:43:33,799 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 22:43:33,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:43:33,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 22:43:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-27 22:43:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 22:43:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-27 22:43:33,812 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 70 [2020-10-27 22:43:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:33,812 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-27 22:43:33,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:43:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-27 22:43:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 22:43:33,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:33,814 INFO L422 BasicCegarLoop]: trace histogram [15, 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 22:43:33,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:43:33,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash 999380322, now seen corresponding path program 5 times [2020-10-27 22:43:33,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:33,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442385715] [2020-10-27 22:43:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:37,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:37,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:43:37,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:43:37,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4050 [2020-10-27 22:43:37,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:43:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:43:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:43:37,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:37,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:37,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:37,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:37,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:37,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:37,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:37,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:37,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:37,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:37,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:43:37,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:43:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:38,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:38,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:38,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:38,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:43:38,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:38,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:38,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:43:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:38,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:38,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:38,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:43:38,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:43:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-27 22:43:38,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442385715] [2020-10-27 22:43:38,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:43:38,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:43:38,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740955285] [2020-10-27 22:43:38,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:43:38,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:38,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:43:38,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:43:38,068 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 4 states. [2020-10-27 22:43:38,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:38,189 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2020-10-27 22:43:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:43:38,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-27 22:43:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:38,193 INFO L225 Difference]: With dead ends: 72 [2020-10-27 22:43:38,193 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 22:43:38,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 22:43:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 22:43:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 22:43:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 22:43:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-10-27 22:43:38,204 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 79 [2020-10-27 22:43:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:38,208 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-10-27 22:43:38,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:43:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-10-27 22:43:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 22:43:38,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:38,212 INFO L422 BasicCegarLoop]: trace histogram [15, 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, 1, 1] [2020-10-27 22:43:38,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:43:38,212 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:38,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1469734812, now seen corresponding path program 1 times [2020-10-27 22:43:38,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:38,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102375211] [2020-10-27 22:43:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:43,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:43,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 22:43:43,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:43:43,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 22:43:43,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:43:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:43:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:43:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:43,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:43,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:43,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:43,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:43,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:43,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:43:43,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:43,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:43:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:43,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:43,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:43,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:43:43,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 22:43:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:43,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:43,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:43,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:43,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:43:43,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:43:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-27 22:43:43,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102375211] [2020-10-27 22:43:43,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:43,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 22:43:43,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227300667] [2020-10-27 22:43:43,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:43:43,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:43,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:43:43,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:43:43,447 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 5 states. [2020-10-27 22:43:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:43,589 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2020-10-27 22:43:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 22:43:43,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-27 22:43:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:43,591 INFO L225 Difference]: With dead ends: 74 [2020-10-27 22:43:43,591 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 22:43:43,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:43:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 22:43:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 22:43:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 22:43:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 22:43:43,602 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 81 [2020-10-27 22:43:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:43,603 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 22:43:43,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:43:43,604 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 22:43:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 22:43:43,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:43,611 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 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 22:43:43,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:43:43,612 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash 827536102, now seen corresponding path program 2 times [2020-10-27 22:43:43,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:43,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833648834] [2020-10-27 22:43:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:48,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:48,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 22:43:48,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:43:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 22:43:48,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:43:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:43:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:43:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:48,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:48,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:48,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:48,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:48,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:48,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:48,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:43:48,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:43:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:48,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:48,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:48,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:43:48,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:48,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:43:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:48,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:48,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:48,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:43:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:43:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-27 22:43:48,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833648834] [2020-10-27 22:43:48,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:48,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 22:43:48,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006507872] [2020-10-27 22:43:48,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:43:48,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:48,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:43:48,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:43:48,835 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 22:43:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:48,977 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2020-10-27 22:43:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:43:48,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-27 22:43:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:48,979 INFO L225 Difference]: With dead ends: 76 [2020-10-27 22:43:48,979 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 22:43:48,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:43:48,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 22:43:48,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-27 22:43:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 22:43:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-10-27 22:43:48,986 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 83 [2020-10-27 22:43:48,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:48,987 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-10-27 22:43:48,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:43:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-10-27 22:43:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 22:43:48,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:48,988 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 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 22:43:48,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:43:48,989 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:48,989 INFO L82 PathProgramCache]: Analyzing trace with hash 891694312, now seen corresponding path program 3 times [2020-10-27 22:43:48,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:48,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615464547] [2020-10-27 22:43:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:54,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:54,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:43:54,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:43:54,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 22:43:54,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:43:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:43:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:43:54,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:54,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:54,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:54,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:54,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:54,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:54,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:54,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:43:54,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:54,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:43:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:54,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:54,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:54,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:43:54,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:54,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:43:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:54,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:54,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:54,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:43:54,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:43:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-27 22:43:54,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615464547] [2020-10-27 22:43:54,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:54,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:43:54,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770357012] [2020-10-27 22:43:54,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:43:54,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:54,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:43:54,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:43:54,160 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states. [2020-10-27 22:43:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:54,290 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2020-10-27 22:43:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:43:54,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-27 22:43:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:54,292 INFO L225 Difference]: With dead ends: 77 [2020-10-27 22:43:54,292 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 22:43:54,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:43:54,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 22:43:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-27 22:43:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 22:43:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-27 22:43:54,309 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 85 [2020-10-27 22:43:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:54,309 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-27 22:43:54,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:43:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-27 22:43:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:43:54,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:54,312 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 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 22:43:54,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:43:54,313 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1876775318, now seen corresponding path program 4 times [2020-10-27 22:43:54,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:54,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603417917] [2020-10-27 22:43:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:56,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:56,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:43:56,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:56,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2640 [2020-10-27 22:43:56,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 22:43:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:43:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 22:43:56,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:57,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:57,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:57,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:57,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:43:57,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:57,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:57,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:57,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:57,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:57,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 22:43:57,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:43:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:43:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:43:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:57,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:57,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:57,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 22:43:57,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:43:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:43:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:57,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:43:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:57,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:58,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:58,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:43:58,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 22:43:58,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:43:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:43:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 6 proven. 319 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 22:43:58,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603417917] [2020-10-27 22:43:58,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:58,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 22:43:58,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650435345] [2020-10-27 22:43:58,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 22:43:58,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:58,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 22:43:58,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:43:58,117 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 18 states. [2020-10-27 22:43:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:59,406 INFO L93 Difference]: Finished difference Result 144 states and 204 transitions. [2020-10-27 22:43:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:43:59,406 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 87 [2020-10-27 22:43:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:59,411 INFO L225 Difference]: With dead ends: 144 [2020-10-27 22:43:59,411 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 22:43:59,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:43:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 22:43:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-27 22:43:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-27 22:43:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2020-10-27 22:43:59,455 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 87 [2020-10-27 22:43:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:59,456 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2020-10-27 22:43:59,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 22:43:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2020-10-27 22:43:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:43:59,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:59,458 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 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, 1] [2020-10-27 22:43:59,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:43:59,458 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:59,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1175710740, now seen corresponding path program 1 times [2020-10-27 22:43:59,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:59,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139086502] [2020-10-27 22:43:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:03,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:04,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:44:04,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:44:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:44:04,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:04,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:44:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:44:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 22:44:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:04,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:04,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:04,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:04,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:44:04,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:04,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:04,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 22:44:04,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:44:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:04,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:05,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:05,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:05,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-27 22:44:05,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:44:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:44:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 200 proven. 111 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 22:44:05,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139086502] [2020-10-27 22:44:05,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:05,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:44:05,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364045925] [2020-10-27 22:44:05,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:44:05,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:44:05,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:44:05,353 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand 16 states. [2020-10-27 22:44:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:06,873 INFO L93 Difference]: Finished difference Result 262 states and 375 transitions. [2020-10-27 22:44:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 22:44:06,874 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-10-27 22:44:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:06,877 INFO L225 Difference]: With dead ends: 262 [2020-10-27 22:44:06,877 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 22:44:06,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 22:44:06,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 22:44:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 137. [2020-10-27 22:44:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 22:44:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 186 transitions. [2020-10-27 22:44:06,905 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 186 transitions. Word has length 87 [2020-10-27 22:44:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:06,905 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 186 transitions. [2020-10-27 22:44:06,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:44:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 186 transitions. [2020-10-27 22:44:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:44:06,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:06,907 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 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, 1] [2020-10-27 22:44:06,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:44:06,908 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:06,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1407074728, now seen corresponding path program 2 times [2020-10-27 22:44:06,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:06,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548628182] [2020-10-27 22:44:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:06,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:07,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:07,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:07,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:09,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:11,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:11,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:44:11,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:44:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:44:11,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:44:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:44:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:44:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:12,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:12,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:12,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:12,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:12,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:44:12,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:12,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:12,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-27 22:44:12,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:44:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:12,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:44:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:13,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:13,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-27 22:44:13,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:44:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:44:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 180 proven. 95 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-27 22:44:13,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548628182] [2020-10-27 22:44:13,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:13,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:44:13,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377834589] [2020-10-27 22:44:13,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:44:13,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:44:13,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:44:13,325 INFO L87 Difference]: Start difference. First operand 137 states and 186 transitions. Second operand 21 states. [2020-10-27 22:44:13,617 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-27 22:44:15,682 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-27 22:44:15,825 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-27 22:44:16,607 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-27 22:44:16,874 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-27 22:44:17,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:17,848 INFO L93 Difference]: Finished difference Result 438 states and 600 transitions. [2020-10-27 22:44:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 22:44:17,849 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 87 [2020-10-27 22:44:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:17,855 INFO L225 Difference]: With dead ends: 438 [2020-10-27 22:44:17,855 INFO L226 Difference]: Without dead ends: 318 [2020-10-27 22:44:17,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=515, Invalid=2565, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 22:44:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-27 22:44:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 270. [2020-10-27 22:44:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-27 22:44:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 372 transitions. [2020-10-27 22:44:17,911 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 372 transitions. Word has length 87 [2020-10-27 22:44:17,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:17,911 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 372 transitions. [2020-10-27 22:44:17,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:44:17,912 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 372 transitions. [2020-10-27 22:44:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:44:17,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:17,915 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 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, 1] [2020-10-27 22:44:17,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:44:17,915 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:17,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:17,915 INFO L82 PathProgramCache]: Analyzing trace with hash 829844076, now seen corresponding path program 3 times [2020-10-27 22:44:17,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:17,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918149861] [2020-10-27 22:44:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:17,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:21,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:22,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:22,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:44:22,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:44:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:44:22,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:44:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:44:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 22:44:22,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:23,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:23,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:23,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:23,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:44:23,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:23,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-27 22:44:23,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:44:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:44:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:24,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:44:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 195 proven. 142 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-27 22:44:24,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918149861] [2020-10-27 22:44:24,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:24,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:44:24,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082702078] [2020-10-27 22:44:24,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:44:24,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:24,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:44:24,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:44:24,862 INFO L87 Difference]: Start difference. First operand 270 states and 372 transitions. Second operand 22 states. [2020-10-27 22:44:25,320 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2020-10-27 22:44:25,489 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-10-27 22:44:25,768 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-10-27 22:44:26,056 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2020-10-27 22:44:26,218 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2020-10-27 22:44:26,383 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-10-27 22:44:26,640 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-10-27 22:44:26,813 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-27 22:44:27,084 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-10-27 22:44:27,262 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2020-10-27 22:44:27,444 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-27 22:44:27,580 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-10-27 22:44:27,729 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-27 22:44:27,896 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-10-27 22:44:28,055 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-10-27 22:44:28,257 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-10-27 22:44:28,611 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-27 22:44:28,812 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-10-27 22:44:28,960 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-27 22:44:29,157 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-27 22:44:29,351 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-27 22:44:29,511 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-10-27 22:44:29,694 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-10-27 22:44:29,854 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-27 22:44:30,387 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-27 22:44:31,044 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-27 22:44:31,789 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-27 22:44:31,955 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-27 22:44:32,154 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-10-27 22:44:32,365 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-27 22:44:32,530 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-27 22:44:32,736 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-10-27 22:44:32,919 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2020-10-27 22:44:33,469 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-27 22:44:33,658 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-27 22:44:33,842 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-27 22:44:34,051 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-27 22:44:34,214 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-27 22:44:34,413 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-10-27 22:44:34,593 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-27 22:44:34,801 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-27 22:44:35,010 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-27 22:44:35,222 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2020-10-27 22:44:35,392 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-27 22:44:35,595 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-27 22:44:35,825 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-27 22:44:36,026 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-27 22:44:36,232 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-27 22:44:36,501 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-27 22:44:36,724 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-27 22:44:36,967 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-27 22:44:37,170 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-27 22:44:37,374 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 22:44:37,567 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-27 22:44:37,788 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-10-27 22:44:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:38,142 INFO L93 Difference]: Finished difference Result 794 states and 1181 transitions. [2020-10-27 22:44:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-27 22:44:38,143 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 87 [2020-10-27 22:44:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:38,151 INFO L225 Difference]: With dead ends: 794 [2020-10-27 22:44:38,151 INFO L226 Difference]: Without dead ends: 518 [2020-10-27 22:44:38,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3137 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1466, Invalid=8236, Unknown=0, NotChecked=0, Total=9702 [2020-10-27 22:44:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-27 22:44:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 405. [2020-10-27 22:44:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-27 22:44:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 576 transitions. [2020-10-27 22:44:38,246 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 576 transitions. Word has length 87 [2020-10-27 22:44:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:38,247 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 576 transitions. [2020-10-27 22:44:38,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:44:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 576 transitions. [2020-10-27 22:44:38,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:44:38,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:38,252 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 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, 1] [2020-10-27 22:44:38,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:44:38,252 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:38,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1600543528, now seen corresponding path program 4 times [2020-10-27 22:44:38,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:38,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748279882] [2020-10-27 22:44:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:38,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:39,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:40,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:41,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:43,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:43,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:44:43,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:44:43,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 22:44:43,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:44:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:44:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:44:43,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:43,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:43,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:43,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:43,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:43,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:43,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:43,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:44:43,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:43,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:43,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:43,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:43,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:44:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-27 22:44:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:44:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:44,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:44:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:44,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:44,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:44,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:44,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 22:44:44,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:44:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:44,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:44:44,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 200 proven. 137 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-27 22:44:44,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748279882] [2020-10-27 22:44:44,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:44,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 22:44:44,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781256932] [2020-10-27 22:44:44,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 22:44:44,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:44,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 22:44:44,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:44:44,939 INFO L87 Difference]: Start difference. First operand 405 states and 576 transitions. Second operand 25 states. [2020-10-27 22:44:45,994 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-27 22:44:46,155 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-27 22:44:46,316 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-27 22:44:46,490 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-10-27 22:44:47,439 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-27 22:44:47,665 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-27 22:44:47,888 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-27 22:44:48,142 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-10-27 22:44:48,867 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-27 22:44:49,122 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-27 22:44:49,390 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-27 22:44:49,652 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-27 22:44:50,983 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-27 22:44:51,161 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-10-27 22:44:51,331 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-27 22:44:51,528 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-27 22:44:51,884 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-27 22:44:52,045 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-27 22:44:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:53,097 INFO L93 Difference]: Finished difference Result 1196 states and 1896 transitions. [2020-10-27 22:44:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-27 22:44:53,107 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 87 [2020-10-27 22:44:53,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:53,118 INFO L225 Difference]: With dead ends: 1196 [2020-10-27 22:44:53,119 INFO L226 Difference]: Without dead ends: 943 [2020-10-27 22:44:53,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1442, Invalid=7114, Unknown=0, NotChecked=0, Total=8556 [2020-10-27 22:44:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-10-27 22:44:53,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 896. [2020-10-27 22:44:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-27 22:44:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1413 transitions. [2020-10-27 22:44:53,290 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1413 transitions. Word has length 87 [2020-10-27 22:44:53,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:53,290 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1413 transitions. [2020-10-27 22:44:53,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 22:44:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1413 transitions. [2020-10-27 22:44:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:44:53,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:53,314 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 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, 1] [2020-10-27 22:44:53,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:44:53,314 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:53,314 INFO L82 PathProgramCache]: Analyzing trace with hash 612753644, now seen corresponding path program 5 times [2020-10-27 22:44:53,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:53,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946787517] [2020-10-27 22:44:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:56,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:57,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:58,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:44:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 22:44:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5194 [2020-10-27 22:44:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:44:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:44:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 22:44:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:44:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:58,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:58,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:58,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:58,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:58,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:58,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:58,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:58,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:44:58,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:58,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:44:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:58,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:58,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:58,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:58,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 22:44:58,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:44:58,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:58,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:44:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:44:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:59,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:59,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:59,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:44:59,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 22:44:59,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:44:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:44:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 181 proven. 145 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-27 22:44:59,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946787517] [2020-10-27 22:44:59,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:59,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:44:59,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352415277] [2020-10-27 22:44:59,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:44:59,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:44:59,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:44:59,474 INFO L87 Difference]: Start difference. First operand 896 states and 1413 transitions. Second operand 22 states. [2020-10-27 22:45:02,550 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 22:45:02,707 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 22:45:02,843 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 22:45:03,350 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-27 22:45:03,509 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-27 22:45:03,669 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 22:45:03,955 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 22:45:06,217 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 22:45:06,406 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 22:45:06,571 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 22:45:06,710 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 22:45:07,136 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-27 22:45:07,323 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-27 22:45:07,495 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-27 22:45:07,656 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-27 22:45:07,826 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-27 22:45:07,983 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-27 22:45:08,133 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 22:45:09,258 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-27 22:45:09,417 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-27 22:45:09,558 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-27 22:45:09,848 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-27 22:45:10,129 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-27 22:45:10,478 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-27 22:45:10,655 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-27 22:45:10,843 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-27 22:45:10,992 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-27 22:45:11,177 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-27 22:45:11,335 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-27 22:45:11,486 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-27 22:45:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:12,868 INFO L93 Difference]: Finished difference Result 1750 states and 3075 transitions. [2020-10-27 22:45:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-10-27 22:45:12,870 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 87 [2020-10-27 22:45:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:12,887 INFO L225 Difference]: With dead ends: 1750 [2020-10-27 22:45:12,887 INFO L226 Difference]: Without dead ends: 1325 [2020-10-27 22:45:12,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5135 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1988, Invalid=12532, Unknown=0, NotChecked=0, Total=14520 [2020-10-27 22:45:12,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-10-27 22:45:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1213. [2020-10-27 22:45:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-27 22:45:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 2132 transitions. [2020-10-27 22:45:13,140 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 2132 transitions. Word has length 87 [2020-10-27 22:45:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:13,140 INFO L481 AbstractCegarLoop]: Abstraction has 1213 states and 2132 transitions. [2020-10-27 22:45:13,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:45:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 2132 transitions. [2020-10-27 22:45:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:45:13,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:13,172 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 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, 1] [2020-10-27 22:45:13,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:45:13,173 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:13,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:13,173 INFO L82 PathProgramCache]: Analyzing trace with hash -338435288, now seen corresponding path program 6 times [2020-10-27 22:45:13,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:13,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796342177] [2020-10-27 22:45:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:14,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:14,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:16,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:17,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:18,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:45:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:45:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 22:45:18,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:45:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:45:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 22:45:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:18,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:18,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:18,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:18,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:18,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:18,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:18,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:45:18,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:18,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:18,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:45:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:18,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:18,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:18,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:18,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 22:45:18,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:45:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:45:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:45:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:45:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 179 proven. 132 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 22:45:19,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796342177] [2020-10-27 22:45:19,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:19,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 22:45:19,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518399534] [2020-10-27 22:45:19,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 22:45:19,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:19,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 22:45:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:45:19,247 INFO L87 Difference]: Start difference. First operand 1213 states and 2132 transitions. Second operand 17 states. [2020-10-27 22:45:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:21,399 INFO L93 Difference]: Finished difference Result 2158 states and 3933 transitions. [2020-10-27 22:45:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 22:45:21,401 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 87 [2020-10-27 22:45:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:21,429 INFO L225 Difference]: With dead ends: 2158 [2020-10-27 22:45:21,430 INFO L226 Difference]: Without dead ends: 1516 [2020-10-27 22:45:21,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:45:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-10-27 22:45:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1387. [2020-10-27 22:45:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2020-10-27 22:45:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2468 transitions. [2020-10-27 22:45:21,773 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2468 transitions. Word has length 87 [2020-10-27 22:45:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:21,774 INFO L481 AbstractCegarLoop]: Abstraction has 1387 states and 2468 transitions. [2020-10-27 22:45:21,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 22:45:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2468 transitions. [2020-10-27 22:45:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:45:21,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:21,813 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 4, 4, 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 22:45:21,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:45:21,813 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:21,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2143873622, now seen corresponding path program 7 times [2020-10-27 22:45:21,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:21,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907695943] [2020-10-27 22:45:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:22,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:23,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:26,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:26,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:45:26,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 22:45:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:45:26,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:45:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 22:45:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 22:45:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:27,273 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 32 [2020-10-27 22:45:27,587 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 26 [2020-10-27 22:45:27,855 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 26 [2020-10-27 22:45:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:28,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:28,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:28,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:28,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:28,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:28,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:28,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:28,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:28,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:45:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-27 22:45:28,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:45:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:45:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:45:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:30,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:30,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:30,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:45:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-27 22:45:30,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:45:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:45:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:45:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:45:30,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 2 proven. 342 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-27 22:45:30,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907695943] [2020-10-27 22:45:30,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:30,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 22:45:30,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168939623] [2020-10-27 22:45:30,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 22:45:30,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:30,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 22:45:30,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2020-10-27 22:45:30,853 INFO L87 Difference]: Start difference. First operand 1387 states and 2468 transitions. Second operand 30 states. [2020-10-27 22:45:31,367 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 49 [2020-10-27 22:45:31,648 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 42 [2020-10-27 22:45:31,927 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 47 [2020-10-27 22:45:32,221 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-10-27 22:45:32,417 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 52 [2020-10-27 22:45:32,931 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-27 22:45:33,302 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-10-27 22:45:33,505 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2020-10-27 22:45:33,720 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-27 22:45:33,969 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2020-10-27 22:45:34,468 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2020-10-27 22:45:34,630 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-27 22:45:34,795 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 22:45:35,024 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2020-10-27 22:45:35,200 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-27 22:45:35,375 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-27 22:45:35,636 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-27 22:45:35,831 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-27 22:45:36,302 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2020-10-27 22:45:36,469 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-27 22:45:36,675 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-27 22:45:36,837 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 22:45:37,080 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2020-10-27 22:45:37,260 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-27 22:45:37,478 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-27 22:45:37,664 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-27 22:45:37,900 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-10-27 22:45:38,090 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-27 22:45:38,275 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-27 22:45:38,823 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2020-10-27 22:45:39,029 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-10-27 22:45:39,308 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2020-10-27 22:45:39,613 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-27 22:45:39,917 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2020-10-27 22:45:40,179 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-10-27 22:45:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:45:42,676 INFO L93 Difference]: Finished difference Result 2232 states and 3932 transitions. [2020-10-27 22:45:42,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-27 22:45:42,678 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 87 [2020-10-27 22:45:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:45:42,706 INFO L225 Difference]: With dead ends: 2232 [2020-10-27 22:45:42,707 INFO L226 Difference]: Without dead ends: 1604 [2020-10-27 22:45:42,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=879, Invalid=6431, Unknown=0, NotChecked=0, Total=7310 [2020-10-27 22:45:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-10-27 22:45:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1406. [2020-10-27 22:45:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1406 states. [2020-10-27 22:45:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2548 transitions. [2020-10-27 22:45:43,043 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2548 transitions. Word has length 87 [2020-10-27 22:45:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:45:43,043 INFO L481 AbstractCegarLoop]: Abstraction has 1406 states and 2548 transitions. [2020-10-27 22:45:43,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 22:45:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2548 transitions. [2020-10-27 22:45:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:45:43,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:45:43,084 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 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, 1] [2020-10-27 22:45:43,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:45:43,084 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:45:43,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:45:43,085 INFO L82 PathProgramCache]: Analyzing trace with hash 732012140, now seen corresponding path program 8 times [2020-10-27 22:45:43,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:45:43,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080139351] [2020-10-27 22:45:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:45:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:43,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:43,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:43,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:44,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:46,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:48,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:45:48,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:45:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 22:45:48,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:45:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 22:45:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 22:45:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:45:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:48,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:45:48,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:45:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:45:48,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:45:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:45:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:45:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:48,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:48,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:45:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 22:45:48,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:45:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:45:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:45:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:45:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:49,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:49,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:49,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:45:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 22:45:49,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:45:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:45:49,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:49,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:45:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:45:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:49,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:45:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:45:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 31 proven. 279 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 22:45:50,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080139351] [2020-10-27 22:45:50,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:45:50,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 22:45:50,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408705871] [2020-10-27 22:45:50,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 22:45:50,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:45:50,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 22:45:50,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2020-10-27 22:45:50,227 INFO L87 Difference]: Start difference. First operand 1406 states and 2548 transitions. Second operand 27 states. [2020-10-27 22:45:50,621 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-27 22:45:50,795 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-27 22:45:50,986 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-27 22:45:51,289 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-27 22:45:51,567 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-27 22:45:52,039 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-27 22:45:52,479 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-27 22:45:52,770 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-27 22:45:53,054 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 22:45:53,351 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-27 22:45:53,796 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-27 22:45:54,174 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-27 22:45:54,747 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-27 22:45:55,191 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-27 22:45:55,506 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-27 22:45:55,681 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-27 22:45:55,840 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-27 22:45:56,000 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-27 22:45:56,205 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-27 22:45:56,404 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 22:45:56,574 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 22:45:56,883 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-27 22:45:57,101 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-27 22:45:57,284 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-27 22:45:57,864 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-27 22:45:58,036 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-10-27 22:45:58,211 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-27 22:45:58,399 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-27 22:45:58,563 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-27 22:45:58,745 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-10-27 22:45:58,891 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-27 22:45:59,100 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-27 22:45:59,290 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-27 22:45:59,472 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-27 22:45:59,845 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-10-27 22:46:00,002 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-27 22:46:00,223 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-27 22:46:00,407 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-27 22:46:00,578 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-27 22:46:00,765 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-27 22:46:01,161 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-27 22:46:01,327 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-27 22:46:01,629 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-10-27 22:46:01,915 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-27 22:46:02,104 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-27 22:46:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:03,643 INFO L93 Difference]: Finished difference Result 2586 states and 4822 transitions. [2020-10-27 22:46:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-10-27 22:46:03,650 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 87 [2020-10-27 22:46:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:03,667 INFO L225 Difference]: With dead ends: 2586 [2020-10-27 22:46:03,667 INFO L226 Difference]: Without dead ends: 1483 [2020-10-27 22:46:03,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1833, Invalid=9723, Unknown=0, NotChecked=0, Total=11556 [2020-10-27 22:46:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-10-27 22:46:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1327. [2020-10-27 22:46:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-27 22:46:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 2011 transitions. [2020-10-27 22:46:03,924 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 2011 transitions. Word has length 87 [2020-10-27 22:46:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:03,924 INFO L481 AbstractCegarLoop]: Abstraction has 1327 states and 2011 transitions. [2020-10-27 22:46:03,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 22:46:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 2011 transitions. [2020-10-27 22:46:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:46:03,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:03,942 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 4, 4, 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 22:46:03,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:46:03,942 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:03,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:03,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1176498388, now seen corresponding path program 9 times [2020-10-27 22:46:03,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:03,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796859108] [2020-10-27 22:46:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:06,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:06,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:46:06,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2955 [2020-10-27 22:46:06,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 22:46:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:46:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 22:46:06,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:07,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:07,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:46:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:07,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:07,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:46:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 22:46:07,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:46:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:46:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:07,682 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 12 [2020-10-27 22:46:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:46:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:07,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:46:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 22:46:07,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:46:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:46:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:46:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:08,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:08,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:46:08,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:08,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 22:46:08,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:46:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:46:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 10 proven. 300 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 22:46:08,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796859108] [2020-10-27 22:46:08,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:08,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 22:46:08,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126440876] [2020-10-27 22:46:08,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 22:46:08,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:08,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 22:46:08,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:46:08,180 INFO L87 Difference]: Start difference. First operand 1327 states and 2011 transitions. Second operand 17 states. [2020-10-27 22:46:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:10,119 INFO L93 Difference]: Finished difference Result 1578 states and 2509 transitions. [2020-10-27 22:46:10,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:46:10,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 87 [2020-10-27 22:46:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:10,141 INFO L225 Difference]: With dead ends: 1578 [2020-10-27 22:46:10,141 INFO L226 Difference]: Without dead ends: 1572 [2020-10-27 22:46:10,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:46:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2020-10-27 22:46:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1375. [2020-10-27 22:46:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-10-27 22:46:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2124 transitions. [2020-10-27 22:46:10,383 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2124 transitions. Word has length 87 [2020-10-27 22:46:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:10,384 INFO L481 AbstractCegarLoop]: Abstraction has 1375 states and 2124 transitions. [2020-10-27 22:46:10,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 22:46:10,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2124 transitions. [2020-10-27 22:46:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:46:10,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:10,401 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 11, 4, 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 22:46:10,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 22:46:10,401 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:10,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:10,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1530121006, now seen corresponding path program 10 times [2020-10-27 22:46:10,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:10,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805627552] [2020-10-27 22:46:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:14,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:15,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 22:46:15,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:46:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:46:15,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:46:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 22:46:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 22:46:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:15,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:15,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:15,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:15,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:46:15,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:46:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:15,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:46:15,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:46:15,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:15,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 22:46:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:16,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:16,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:16,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:46:16,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:46:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-27 22:46:16,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:46:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:46:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:16,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:46:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:16,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:16,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:16,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:46:16,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:46:16,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 22:46:16,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:16,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:46:16,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:46:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:46:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 178 proven. 168 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 22:46:17,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805627552] [2020-10-27 22:46:17,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:46:17,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 22:46:17,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766544449] [2020-10-27 22:46:17,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 22:46:17,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:17,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 22:46:17,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-27 22:46:17,402 INFO L87 Difference]: Start difference. First operand 1375 states and 2124 transitions. Second operand 23 states. [2020-10-27 22:46:19,391 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-27 22:46:19,562 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-27 22:46:19,752 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-27 22:46:20,225 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-27 22:46:20,573 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-27 22:46:20,721 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-27 22:46:20,895 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-27 22:46:21,243 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-27 22:46:21,411 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-27 22:46:21,790 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-27 22:46:21,967 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-27 22:46:22,358 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-27 22:46:22,540 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 22:46:23,069 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-27 22:46:23,246 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 22:46:23,716 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 22:46:23,913 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-27 22:46:24,412 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-27 22:46:24,605 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-27 22:46:24,764 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 22:46:24,935 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 22:46:25,160 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-10-27 22:46:25,488 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-27 22:46:25,716 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-27 22:46:25,884 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 22:46:26,120 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-27 22:46:26,472 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-27 22:46:26,717 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 22:46:26,891 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 22:46:27,139 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-27 22:46:27,626 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-27 22:46:28,057 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-27 22:46:28,519 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-27 22:46:28,874 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-27 22:46:29,130 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-27 22:46:31,594 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-27 22:46:31,788 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-27 22:46:31,985 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-27 22:46:32,237 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-27 22:46:32,565 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-27 22:46:32,742 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-27 22:46:32,936 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-27 22:46:33,166 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-27 22:46:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:34,607 INFO L93 Difference]: Finished difference Result 2968 states and 4663 transitions. [2020-10-27 22:46:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-10-27 22:46:34,610 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 87 [2020-10-27 22:46:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:34,634 INFO L225 Difference]: With dead ends: 2968 [2020-10-27 22:46:34,634 INFO L226 Difference]: Without dead ends: 1746 [2020-10-27 22:46:34,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5795 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=2067, Invalid=14189, Unknown=0, NotChecked=0, Total=16256 [2020-10-27 22:46:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states.