/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:59:04,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:59:04,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:59:04,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:59:04,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:59:04,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:59:04,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:59:04,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:59:04,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:59:04,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:59:04,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:59:04,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:59:04,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:59:04,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:59:04,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:59:04,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:59:04,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:59:04,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:59:04,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:59:04,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:59:04,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:59:04,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:59:04,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:59:04,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:59:04,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:59:04,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:59:04,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:59:04,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:59:04,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:59:04,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:59:04,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:59:04,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:59:04,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:59:04,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:59:04,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:59:04,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:59:04,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:59:04,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:59:04,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:59:04,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:59:04,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:59:04,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:59:04,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:59:04,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:59:04,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:59:04,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:59:04,336 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:59:04,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:59:04,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:59:04,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:59:04,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:59:04,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:59:04,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:59:04,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:59:04,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:59:04,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:59:04,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:59:04,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:59:04,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:59:04,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:59:04,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:59:04,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:59:04,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:59:04,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:59:04,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:59:04,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:59:04,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:59:04,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:59:04,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:59:04,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:59:04,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:59:04,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:59:04,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:59:04,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:59:04,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:59:04,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:59:04,786 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:59:04,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label37.c [2020-10-26 23:59:04,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4daf476e1/c0dde6b60f444401b53fb234f4f138e6/FLAG8cb5374a4 [2020-10-26 23:59:05,786 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:59:05,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label37.c [2020-10-26 23:59:05,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4daf476e1/c0dde6b60f444401b53fb234f4f138e6/FLAG8cb5374a4 [2020-10-26 23:59:05,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4daf476e1/c0dde6b60f444401b53fb234f4f138e6 [2020-10-26 23:59:05,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:59:05,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:59:05,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:59:05,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:59:05,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:59:05,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:59:05" (1/1) ... [2020-10-26 23:59:05,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d4cfc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:05, skipping insertion in model container [2020-10-26 23:59:05,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:59:05" (1/1) ... [2020-10-26 23:59:05,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:59:06,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:59:06,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:59:06,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:59:06,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:59:07,012 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:59:07,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07 WrapperNode [2020-10-26 23:59:07,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:59:07,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:59:07,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:59:07,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:59:07,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (1/1) ... [2020-10-26 23:59:07,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (1/1) ... [2020-10-26 23:59:07,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (1/1) ... [2020-10-26 23:59:07,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (1/1) ... [2020-10-26 23:59:07,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (1/1) ... [2020-10-26 23:59:07,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (1/1) ... [2020-10-26 23:59:07,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (1/1) ... [2020-10-26 23:59:07,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:59:07,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:59:07,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:59:07,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:59:07,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:59:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:59:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:59:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:59:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:59:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:59:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:59:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:59:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:59:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:59:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:59:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:59:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:59:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:59:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:59:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:59:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:59:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:59:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:59:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:59:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:59:07,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:59:10,454 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:59:10,455 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:59:10,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:59:10 BoogieIcfgContainer [2020-10-26 23:59:10,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:59:10,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:59:10,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:59:10,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:59:10,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:59:05" (1/3) ... [2020-10-26 23:59:10,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5752084f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:59:10, skipping insertion in model container [2020-10-26 23:59:10,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:07" (2/3) ... [2020-10-26 23:59:10,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5752084f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:59:10, skipping insertion in model container [2020-10-26 23:59:10,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:59:10" (3/3) ... [2020-10-26 23:59:10,468 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label37.c [2020-10-26 23:59:10,499 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:59:10,505 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:59:10,520 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:59:10,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:59:10,554 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:59:10,554 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:59:10,554 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:59:10,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:59:10,554 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:59:10,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:59:10,555 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:59:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:59:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 23:59:10,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:10,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:10,591 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1568458812, now seen corresponding path program 1 times [2020-10-26 23:59:10,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:10,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131583269] [2020-10-26 23:59:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:11,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:11,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-26 23:59:11,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-26 23:59:11,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:59:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 23:59:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:59:11,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:11,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:11,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:11,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:11,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:59:11,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:11,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:59:11,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131583269] [2020-10-26 23:59:11,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:59:11,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:59:11,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337851851] [2020-10-26 23:59:11,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:59:11,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:11,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:59:11,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:59:11,442 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:59:11,616 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:59:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:16,497 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-26 23:59:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:59:16,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-26 23:59:16,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:16,522 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:59:16,522 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:59:16,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:59:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:59:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-26 23:59:16,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-26 23:59:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-26 23:59:16,642 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 27 [2020-10-26 23:59:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:16,643 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-26 23:59:16,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:59:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-26 23:59:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-26 23:59:16,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:16,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:16,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:59:16,649 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:16,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:16,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1519028741, now seen corresponding path program 1 times [2020-10-26 23:59:16,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:16,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545422890] [2020-10-26 23:59:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:16,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:17,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:17,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:59:17,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-10-26 23:59:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:59:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:59:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:59:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:17,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:17,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:17,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:17,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:59:17,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:17,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:17,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:18,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:18,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:59:18,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:59:18,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:59:18,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:59:18,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545422890] [2020-10-26 23:59:18,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:59:18,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:59:18,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099576424] [2020-10-26 23:59:18,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:18,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:18,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:18,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:18,223 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-26 23:59:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:23,740 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-26 23:59:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:59:23,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-26 23:59:23,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:23,757 INFO L225 Difference]: With dead ends: 2090 [2020-10-26 23:59:23,758 INFO L226 Difference]: Without dead ends: 1403 [2020-10-26 23:59:23,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:59:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-26 23:59:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-26 23:59:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-26 23:59:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-26 23:59:23,839 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 103 [2020-10-26 23:59:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:23,840 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-26 23:59:23,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-26 23:59:23,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-26 23:59:23,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:23,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:23,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:59:23,849 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:23,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1502457610, now seen corresponding path program 1 times [2020-10-26 23:59:23,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:23,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036108243] [2020-10-26 23:59:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:27,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:27,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-26 23:59:27,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:59:27,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3891 [2020-10-26 23:59:27,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:59:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:59:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:28,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:28,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:28,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:59:28,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:28,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:28,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:59:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-26 23:59:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:59:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:28,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:59:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:28,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:28,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:59:28,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-26 23:59:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:59:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:59:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 23:59:29,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036108243] [2020-10-26 23:59:29,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:29,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:59:29,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252377021] [2020-10-26 23:59:29,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:59:29,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:29,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:59:29,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:59:29,311 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 11 states. [2020-10-26 23:59:29,553 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-26 23:59:30,147 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-26 23:59:33,053 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-26 23:59:33,309 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2020-10-26 23:59:33,576 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-26 23:59:34,007 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-26 23:59:36,116 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-26 23:59:36,667 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-26 23:59:37,146 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-26 23:59:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:39,784 INFO L93 Difference]: Finished difference Result 3887 states and 5279 transitions. [2020-10-26 23:59:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 23:59:39,785 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 190 [2020-10-26 23:59:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:39,804 INFO L225 Difference]: With dead ends: 3887 [2020-10-26 23:59:39,804 INFO L226 Difference]: Without dead ends: 2514 [2020-10-26 23:59:39,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:59:39,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2020-10-26 23:59:39,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2426. [2020-10-26 23:59:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2020-10-26 23:59:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3216 transitions. [2020-10-26 23:59:39,896 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3216 transitions. Word has length 190 [2020-10-26 23:59:39,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:39,900 INFO L481 AbstractCegarLoop]: Abstraction has 2426 states and 3216 transitions. [2020-10-26 23:59:39,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:59:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3216 transitions. [2020-10-26 23:59:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-26 23:59:39,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:39,918 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:39,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:59:39,919 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:39,919 INFO L82 PathProgramCache]: Analyzing trace with hash 248096677, now seen corresponding path program 1 times [2020-10-26 23:59:39,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:39,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442668797] [2020-10-26 23:59:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:40,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:41,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:42,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:45,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-26 23:59:45,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:59:45,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:59:45,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:59:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-26 23:59:45,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:45,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:45,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:45,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:45,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:59:45,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:45,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:45,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:59:45,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:59:45,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:59:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:59:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:45,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:45,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:59:45,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-26 23:59:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:59:45,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:45,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:59:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:46,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:46,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:46,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:59:46,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:46,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:46,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:46,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 23:59:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-26 23:59:46,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442668797] [2020-10-26 23:59:46,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:46,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:59:46,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186568106] [2020-10-26 23:59:46,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:46,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:46,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:46,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:46,321 INFO L87 Difference]: Start difference. First operand 2426 states and 3216 transitions. Second operand 7 states. [2020-10-26 23:59:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:51,816 INFO L93 Difference]: Finished difference Result 5573 states and 7753 transitions. [2020-10-26 23:59:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:59:51,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 360 [2020-10-26 23:59:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:51,840 INFO L225 Difference]: With dead ends: 5573 [2020-10-26 23:59:51,840 INFO L226 Difference]: Without dead ends: 3153 [2020-10-26 23:59:51,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2020-10-26 23:59:51,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 3120. [2020-10-26 23:59:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-26 23:59:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4184 transitions. [2020-10-26 23:59:51,949 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4184 transitions. Word has length 360 [2020-10-26 23:59:51,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:51,950 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 4184 transitions. [2020-10-26 23:59:51,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:51,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4184 transitions. [2020-10-26 23:59:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-26 23:59:51,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:51,962 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:51,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:59:51,963 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:51,963 INFO L82 PathProgramCache]: Analyzing trace with hash -852351412, now seen corresponding path program 1 times [2020-10-26 23:59:51,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:51,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013714593] [2020-10-26 23:59:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:52,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:56,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:57,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:57,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-26 23:59:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:59:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:59:57,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:59:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 23:59:57,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:59:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:57,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:57,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:57,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:57,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:57,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:57,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:57,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:59:57,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:59:57,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:59:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:59:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:57,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:57,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:59:57,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 23:59:57,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:59:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:57,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:59:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:57,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:57,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:57,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:57,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:59:57,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:57,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:57,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:57,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:57,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:57,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-26 23:59:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:57,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:57,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:57,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:57,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:59:57,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:59:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:57,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 172 proven. 218 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-26 23:59:58,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013714593] [2020-10-26 23:59:58,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:58,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:58,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125215208] [2020-10-26 23:59:58,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:58,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:58,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:58,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:58,339 INFO L87 Difference]: Start difference. First operand 3120 states and 4184 transitions. Second operand 7 states. [2020-10-27 00:00:04,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:04,167 INFO L93 Difference]: Finished difference Result 7674 states and 10390 transitions. [2020-10-27 00:00:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:00:04,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2020-10-27 00:00:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:04,192 INFO L225 Difference]: With dead ends: 7674 [2020-10-27 00:00:04,192 INFO L226 Difference]: Without dead ends: 3847 [2020-10-27 00:00:04,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:04,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2020-10-27 00:00:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3827. [2020-10-27 00:00:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3827 states. [2020-10-27 00:00:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 4317 transitions. [2020-10-27 00:00:04,306 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 4317 transitions. Word has length 475 [2020-10-27 00:00:04,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:04,306 INFO L481 AbstractCegarLoop]: Abstraction has 3827 states and 4317 transitions. [2020-10-27 00:00:04,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 4317 transitions. [2020-10-27 00:00:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-27 00:00:04,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:04,325 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:04,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:00:04,325 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:04,326 INFO L82 PathProgramCache]: Analyzing trace with hash -665944413, now seen corresponding path program 1 times [2020-10-27 00:00:04,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:04,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228788322] [2020-10-27 00:00:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:04,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:04,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:09,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:09,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-27 00:00:09,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:00:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 00:00:09,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:00:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:09,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:09,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:09,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:09,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:09,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:00:09,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:09,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:09,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:09,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:09,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:09,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:09,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 00:00:09,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:00:09,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:00:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:09,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:09,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:09,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:09,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:00:09,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:00:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:00:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:10,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:10,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:10,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:00:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:10,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 00:00:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:10,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:10,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:00:10,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:00:10,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:00:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:10,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:10,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-27 00:00:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:10,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:10,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:10,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:00:10,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:00:10,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 00:00:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 95 proven. 380 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-27 00:00:10,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228788322] [2020-10-27 00:00:10,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:10,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:10,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247964373] [2020-10-27 00:00:10,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:10,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:10,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:10,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:10,859 INFO L87 Difference]: Start difference. First operand 3827 states and 4317 transitions. Second operand 7 states. [2020-10-27 00:00:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:15,020 INFO L93 Difference]: Finished difference Result 11437 states and 13142 transitions. [2020-10-27 00:00:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:00:15,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 588 [2020-10-27 00:00:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:15,061 INFO L225 Difference]: With dead ends: 11437 [2020-10-27 00:00:15,061 INFO L226 Difference]: Without dead ends: 7616 [2020-10-27 00:00:15,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:00:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7616 states. [2020-10-27 00:00:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7616 to 7263. [2020-10-27 00:00:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7263 states. [2020-10-27 00:00:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7263 states to 7263 states and 8240 transitions. [2020-10-27 00:00:15,282 INFO L78 Accepts]: Start accepts. Automaton has 7263 states and 8240 transitions. Word has length 588 [2020-10-27 00:00:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:15,282 INFO L481 AbstractCegarLoop]: Abstraction has 7263 states and 8240 transitions. [2020-10-27 00:00:15,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 7263 states and 8240 transitions. [2020-10-27 00:00:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2020-10-27 00:00:15,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:15,312 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:15,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:00:15,313 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:15,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1806606490, now seen corresponding path program 1 times [2020-10-27 00:00:15,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:15,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084135215] [2020-10-27 00:00:15,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:20,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:20,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-27 00:00:20,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:00:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 00:00:20,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 00:00:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:20,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:20,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:20,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:00:20,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:20,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:00:21,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-27 00:00:21,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:21,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:00:21,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:21,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 00:00:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:21,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:00:21,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:21,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 00:00:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:00:21,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:00:21,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:00:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-27 00:00:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:21,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:00:21,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:21,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:21,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:00:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:21,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 76 proven. 348 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-27 00:00:22,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084135215] [2020-10-27 00:00:22,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:22,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:22,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123367078] [2020-10-27 00:00:22,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:22,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:22,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:22,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:22,518 INFO L87 Difference]: Start difference. First operand 7263 states and 8240 transitions. Second operand 7 states. [2020-10-27 00:00:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:25,981 INFO L93 Difference]: Finished difference Result 14187 states and 16137 transitions. [2020-10-27 00:00:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:00:25,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 639 [2020-10-27 00:00:25,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:26,018 INFO L225 Difference]: With dead ends: 14187 [2020-10-27 00:00:26,018 INFO L226 Difference]: Without dead ends: 7267 [2020-10-27 00:00:26,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:00:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7267 states. [2020-10-27 00:00:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7267 to 7263. [2020-10-27 00:00:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7263 states. [2020-10-27 00:00:26,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7263 states to 7263 states and 8236 transitions. [2020-10-27 00:00:26,213 INFO L78 Accepts]: Start accepts. Automaton has 7263 states and 8236 transitions. Word has length 639 [2020-10-27 00:00:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:26,214 INFO L481 AbstractCegarLoop]: Abstraction has 7263 states and 8236 transitions. [2020-10-27 00:00:26,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7263 states and 8236 transitions. [2020-10-27 00:00:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2020-10-27 00:00:26,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:26,229 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:26,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:00:26,229 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:26,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:26,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1369948203, now seen corresponding path program 1 times [2020-10-27 00:00:26,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:26,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359697112] [2020-10-27 00:00:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:31,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:31,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 778 [2020-10-27 00:00:31,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:00:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 00:00:31,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:00:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:00:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:31,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:31,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:31,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:31,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:31,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:00:31,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:31,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:31,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:31,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 00:00:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:00:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:31,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:32,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 00:00:32,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:32,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:00:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:32,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:00:32,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:32,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:00:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:00:32,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:00:32,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:32,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:00:32,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:32,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:32,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:00:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:00:32,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:00:32,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:00:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 233 proven. 347 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2020-10-27 00:00:33,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359697112] [2020-10-27 00:00:33,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:33,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:00:33,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395753742] [2020-10-27 00:00:33,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:00:33,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:00:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:00:33,089 INFO L87 Difference]: Start difference. First operand 7263 states and 8236 transitions. Second operand 8 states. [2020-10-27 00:00:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:40,039 INFO L93 Difference]: Finished difference Result 19280 states and 22357 transitions. [2020-10-27 00:00:40,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:00:40,040 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 758 [2020-10-27 00:00:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:40,101 INFO L225 Difference]: With dead ends: 19280 [2020-10-27 00:00:40,101 INFO L226 Difference]: Without dead ends: 12360 [2020-10-27 00:00:40,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-27 00:00:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12360 states. [2020-10-27 00:00:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12360 to 12356. [2020-10-27 00:00:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12356 states. [2020-10-27 00:00:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12356 states to 12356 states and 13819 transitions. [2020-10-27 00:00:40,437 INFO L78 Accepts]: Start accepts. Automaton has 12356 states and 13819 transitions. Word has length 758 [2020-10-27 00:00:40,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:40,438 INFO L481 AbstractCegarLoop]: Abstraction has 12356 states and 13819 transitions. [2020-10-27 00:00:40,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:00:40,438 INFO L276 IsEmpty]: Start isEmpty. Operand 12356 states and 13819 transitions. [2020-10-27 00:00:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2020-10-27 00:00:40,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:40,464 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:40,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:00:40,464 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:40,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1748417944, now seen corresponding path program 1 times [2020-10-27 00:00:40,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:40,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633292108] [2020-10-27 00:00:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:41,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:45,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:45,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:45,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 922 [2020-10-27 00:00:45,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:00:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 00:00:45,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:00:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:00:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:45,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:45,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:45,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:00:45,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:45,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:46,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:00:46,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:00:46,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:46,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:00:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:46,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:46,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:00:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:00:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:00:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:46,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:00:46,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 00:00:46,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:00:46,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:46,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-10-27 00:00:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:46,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:46,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:46,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:00:46,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:46,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-27 00:00:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:46,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:00:46,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:00:46,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:00:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2020-10-27 00:00:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:46,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:00:46,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:00:46,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:00:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1838 backedges. 400 proven. 356 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2020-10-27 00:00:47,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633292108] [2020-10-27 00:00:47,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:47,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:47,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315379635] [2020-10-27 00:00:47,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:47,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:47,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:47,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:47,244 INFO L87 Difference]: Start difference. First operand 12356 states and 13819 transitions. Second operand 7 states. [2020-10-27 00:00:51,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:51,717 INFO L93 Difference]: Finished difference Result 27759 states and 31397 transitions. [2020-10-27 00:00:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:00:51,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 900 [2020-10-27 00:00:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:51,781 INFO L225 Difference]: With dead ends: 27759 [2020-10-27 00:00:51,781 INFO L226 Difference]: Without dead ends: 15746 [2020-10-27 00:00:51,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:00:51,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15746 states. [2020-10-27 00:00:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15746 to 15403. [2020-10-27 00:00:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15403 states. [2020-10-27 00:00:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15403 states to 15403 states and 17044 transitions. [2020-10-27 00:00:52,172 INFO L78 Accepts]: Start accepts. Automaton has 15403 states and 17044 transitions. Word has length 900 [2020-10-27 00:00:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:52,174 INFO L481 AbstractCegarLoop]: Abstraction has 15403 states and 17044 transitions. [2020-10-27 00:00:52,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 15403 states and 17044 transitions. [2020-10-27 00:00:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1182 [2020-10-27 00:00:52,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:52,212 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:52,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:00:52,213 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:52,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:52,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1219475808, now seen corresponding path program 1 times [2020-10-27 00:00:52,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:52,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063900765] [2020-10-27 00:00:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:52,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:52,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:53,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1203 [2020-10-27 00:00:57,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:00:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-27 00:00:57,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:00:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:00:57,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:57,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:57,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:00:57,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:57,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:57,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:00:57,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:00:57,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:00:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:00:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:58,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:58,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:00:58,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:58,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 00:00:58,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:00:58,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-27 00:00:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:58,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:58,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:00:58,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:58,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:00:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:58,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-27 00:00:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:58,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:58,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:58,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:00:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:00:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:58,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1050 [2020-10-27 00:00:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:58,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:58,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:00:58,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:00:58,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:00:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 463 proven. 412 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2020-10-27 00:00:59,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063900765] [2020-10-27 00:00:59,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:59,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:59,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108263710] [2020-10-27 00:00:59,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:59,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:59,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:59,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:59,519 INFO L87 Difference]: Start difference. First operand 15403 states and 17044 transitions. Second operand 7 states. [2020-10-27 00:01:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:06,219 INFO L93 Difference]: Finished difference Result 33186 states and 36836 transitions. [2020-10-27 00:01:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:01:06,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1181 [2020-10-27 00:01:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:06,282 INFO L225 Difference]: With dead ends: 33186 [2020-10-27 00:01:06,282 INFO L226 Difference]: Without dead ends: 18126 [2020-10-27 00:01:06,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18126 states. [2020-10-27 00:01:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18126 to 18126. [2020-10-27 00:01:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18126 states. [2020-10-27 00:01:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18126 states to 18126 states and 19970 transitions. [2020-10-27 00:01:06,699 INFO L78 Accepts]: Start accepts. Automaton has 18126 states and 19970 transitions. Word has length 1181 [2020-10-27 00:01:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:06,700 INFO L481 AbstractCegarLoop]: Abstraction has 18126 states and 19970 transitions. [2020-10-27 00:01:06,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 18126 states and 19970 transitions. [2020-10-27 00:01:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2020-10-27 00:01:06,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:06,742 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:06,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:01:06,742 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:06,743 INFO L82 PathProgramCache]: Analyzing trace with hash -711889756, now seen corresponding path program 1 times [2020-10-27 00:01:06,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:06,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505272303] [2020-10-27 00:01:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1205 [2020-10-27 00:01:12,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:01:12,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 00:01:12,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-27 00:01:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 00:01:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:12,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:01:12,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:12,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:01:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:01:12,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:01:12,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:01:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:01:12,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:01:12,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 00:01:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-27 00:01:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:01:12,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 00:01:12,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 00:01:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-27 00:01:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:13,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:13,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-27 00:01:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:13,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:13,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:13,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:01:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:01:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:01:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 571 proven. 252 refuted. 0 times theorem prover too weak. 1605 trivial. 0 not checked. [2020-10-27 00:01:14,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505272303] [2020-10-27 00:01:14,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:14,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:01:14,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078677264] [2020-10-27 00:01:14,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:01:14,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:14,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:01:14,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:01:14,175 INFO L87 Difference]: Start difference. First operand 18126 states and 19970 transitions. Second operand 8 states. [2020-10-27 00:01:19,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:19,609 INFO L93 Difference]: Finished difference Result 39622 states and 44150 transitions. [2020-10-27 00:01:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:01:19,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1183 [2020-10-27 00:01:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:19,677 INFO L225 Difference]: With dead ends: 39622 [2020-10-27 00:01:19,677 INFO L226 Difference]: Without dead ends: 22180 [2020-10-27 00:01:19,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22180 states. [2020-10-27 00:01:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22180 to 21843. [2020-10-27 00:01:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21843 states. [2020-10-27 00:01:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21843 states to 21843 states and 24227 transitions. [2020-10-27 00:01:20,107 INFO L78 Accepts]: Start accepts. Automaton has 21843 states and 24227 transitions. Word has length 1183 [2020-10-27 00:01:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:20,108 INFO L481 AbstractCegarLoop]: Abstraction has 21843 states and 24227 transitions. [2020-10-27 00:01:20,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:01:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 21843 states and 24227 transitions. [2020-10-27 00:01:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1374 [2020-10-27 00:01:20,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:20,162 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:20,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:01:20,163 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash -701309989, now seen corresponding path program 1 times [2020-10-27 00:01:20,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:20,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63059525] [2020-10-27 00:01:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1397 [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:01:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:25,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:01:25,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:25,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:25,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:01:25,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:01:25,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:01:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:25,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:25,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:01:25,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:01:25,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:01:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:01:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:26,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:26,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:26,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:26,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:01:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:01:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:26,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:01:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:26,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:26,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:01:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:01:26,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:01:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-27 00:01:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:26,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:26,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:01:26,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:26,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:01:26,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:01:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:26,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-27 00:01:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:26,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:26,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:26,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:01:26,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:01:26,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:01:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:26,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-27 00:01:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:26,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:26,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 00:01:26,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:01:26,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 00:01:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 422 proven. 489 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2020-10-27 00:01:28,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63059525] [2020-10-27 00:01:28,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:28,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:28,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024427155] [2020-10-27 00:01:28,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:28,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:28,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:28,053 INFO L87 Difference]: Start difference. First operand 21843 states and 24227 transitions. Second operand 7 states. [2020-10-27 00:01:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:33,000 INFO L93 Difference]: Finished difference Result 43341 states and 48130 transitions. [2020-10-27 00:01:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:01:33,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1373 [2020-10-27 00:01:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:33,068 INFO L225 Difference]: With dead ends: 43341 [2020-10-27 00:01:33,068 INFO L226 Difference]: Without dead ends: 22182 [2020-10-27 00:01:33,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:01:33,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22182 states. [2020-10-27 00:01:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22182 to 22182. [2020-10-27 00:01:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22182 states. [2020-10-27 00:01:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22182 states to 22182 states and 24589 transitions. [2020-10-27 00:01:33,513 INFO L78 Accepts]: Start accepts. Automaton has 22182 states and 24589 transitions. Word has length 1373 [2020-10-27 00:01:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:33,514 INFO L481 AbstractCegarLoop]: Abstraction has 22182 states and 24589 transitions. [2020-10-27 00:01:33,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 22182 states and 24589 transitions. [2020-10-27 00:01:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1376 [2020-10-27 00:01:33,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:33,561 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:33,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:01:33,561 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:33,562 INFO L82 PathProgramCache]: Analyzing trace with hash 895495967, now seen corresponding path program 1 times [2020-10-27 00:01:33,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:33,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085829683] [2020-10-27 00:01:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:39,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:39,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1399 [2020-10-27 00:01:39,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:01:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5431 [2020-10-27 00:01:39,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:01:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:01:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:39,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:39,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:39,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:39,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:01:39,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:39,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:39,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:39,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:01:39,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:01:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:01:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:01:39,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:39,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:01:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:39,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:01:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:01:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:01:40,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:01:40,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:01:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-27 00:01:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:01:40,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:01:40,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:01:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:40,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-27 00:01:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:01:40,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:01:40,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:01:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1181 [2020-10-27 00:01:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 00:01:40,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:01:40,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 00:01:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3424 backedges. 422 proven. 489 refuted. 0 times theorem prover too weak. 2513 trivial. 0 not checked. [2020-10-27 00:01:41,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085829683] [2020-10-27 00:01:41,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:41,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:41,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519744368] [2020-10-27 00:01:41,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:41,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:41,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:41,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:41,835 INFO L87 Difference]: Start difference. First operand 22182 states and 24589 transitions. Second operand 7 states. [2020-10-27 00:01:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:47,260 INFO L93 Difference]: Finished difference Result 46386 states and 51535 transitions. [2020-10-27 00:01:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:47,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1375 [2020-10-27 00:01:47,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:47,337 INFO L225 Difference]: With dead ends: 46386 [2020-10-27 00:01:47,337 INFO L226 Difference]: Without dead ends: 24888 [2020-10-27 00:01:47,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:01:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24888 states. [2020-10-27 00:01:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24888 to 24886. [2020-10-27 00:01:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24886 states. [2020-10-27 00:01:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24886 states to 24886 states and 27439 transitions. [2020-10-27 00:01:47,813 INFO L78 Accepts]: Start accepts. Automaton has 24886 states and 27439 transitions. Word has length 1375 [2020-10-27 00:01:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:47,814 INFO L481 AbstractCegarLoop]: Abstraction has 24886 states and 27439 transitions. [2020-10-27 00:01:47,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 24886 states and 27439 transitions. [2020-10-27 00:01:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1421 [2020-10-27 00:01:47,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:47,861 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:47,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:01:47,861 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:47,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash 254767530, now seen corresponding path program 1 times [2020-10-27 00:01:47,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:47,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673081527] [2020-10-27 00:01:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:53,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1446 [2020-10-27 00:01:53,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:01:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-27 00:01:53,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:01:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:01:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:53,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:53,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:01:53,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:53,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:53,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:53,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:01:53,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:53,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:53,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:01:53,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:01:53,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:53,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:01:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:53,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:01:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 00:01:53,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:01:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:53,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:53,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:01:53,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:53,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:01:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:54,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:54,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:54,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:01:54,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-27 00:01:54,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:01:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:01:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:55,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:55,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:01:55,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:55,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-27 00:01:55,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:55,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:55,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:01:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:55,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:01:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:55,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:55,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:01:55,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:55,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:01:55,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:01:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:55,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-27 00:01:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:55,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:55,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 00:01:55,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:01:55,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 00:01:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 1030 proven. 283 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2020-10-27 00:01:57,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673081527] [2020-10-27 00:01:57,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:57,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:57,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315828460] [2020-10-27 00:01:57,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:57,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:57,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:57,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:57,375 INFO L87 Difference]: Start difference. First operand 24886 states and 27439 transitions. Second operand 7 states. [2020-10-27 00:02:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:01,905 INFO L93 Difference]: Finished difference Result 49094 states and 54195 transitions. [2020-10-27 00:02:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:01,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1420 [2020-10-27 00:02:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:01,965 INFO L225 Difference]: With dead ends: 49094 [2020-10-27 00:02:01,965 INFO L226 Difference]: Without dead ends: 24892 [2020-10-27 00:02:01,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24892 states. [2020-10-27 00:02:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24892 to 24549. [2020-10-27 00:02:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24549 states. [2020-10-27 00:02:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24549 states to 24549 states and 27080 transitions. [2020-10-27 00:02:02,425 INFO L78 Accepts]: Start accepts. Automaton has 24549 states and 27080 transitions. Word has length 1420 [2020-10-27 00:02:02,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:02,426 INFO L481 AbstractCegarLoop]: Abstraction has 24549 states and 27080 transitions. [2020-10-27 00:02:02,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:02,426 INFO L276 IsEmpty]: Start isEmpty. Operand 24549 states and 27080 transitions. [2020-10-27 00:02:02,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1508 [2020-10-27 00:02:02,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:02,469 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:02,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:02:02,470 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:02,470 INFO L82 PathProgramCache]: Analyzing trace with hash -955337976, now seen corresponding path program 1 times [2020-10-27 00:02:02,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:02,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216870091] [2020-10-27 00:02:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:07,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1533 [2020-10-27 00:02:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 00:02:07,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 938 [2020-10-27 00:02:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:02:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:08,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:08,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:08,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:08,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:08,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:08,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:08,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:08,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:08,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:02:08,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:08,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:08,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:08,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:02:08,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:02:08,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:08,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:02:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:08,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 00:02:08,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:02:08,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:08,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-27 00:02:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:08,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:08,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 00:02:08,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:02:08,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-27 00:02:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:02:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:02:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 00:02:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:08,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-27 00:02:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:08,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:08,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:02:08,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 00:02:08,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:02:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:09,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1201 [2020-10-27 00:02:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:09,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:09,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:09,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:02:09,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:02:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:02:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1313 [2020-10-27 00:02:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:09,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:09,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 00:02:09,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:02:09,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 00:02:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4403 backedges. 1117 proven. 283 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2020-10-27 00:02:11,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216870091] [2020-10-27 00:02:11,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:11,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:11,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975626712] [2020-10-27 00:02:11,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:11,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:11,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:11,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:11,692 INFO L87 Difference]: Start difference. First operand 24549 states and 27080 transitions. Second operand 7 states. [2020-10-27 00:02:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:16,427 INFO L93 Difference]: Finished difference Result 49094 states and 54179 transitions. [2020-10-27 00:02:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:16,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1507 [2020-10-27 00:02:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:16,493 INFO L225 Difference]: With dead ends: 49094 [2020-10-27 00:02:16,494 INFO L226 Difference]: Without dead ends: 25229 [2020-10-27 00:02:16,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:02:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25229 states. [2020-10-27 00:02:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25229 to 25227. [2020-10-27 00:02:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25227 states. [2020-10-27 00:02:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25227 states to 25227 states and 27738 transitions. [2020-10-27 00:02:16,992 INFO L78 Accepts]: Start accepts. Automaton has 25227 states and 27738 transitions. Word has length 1507 [2020-10-27 00:02:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:16,994 INFO L481 AbstractCegarLoop]: Abstraction has 25227 states and 27738 transitions. [2020-10-27 00:02:16,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 25227 states and 27738 transitions. [2020-10-27 00:02:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1660 [2020-10-27 00:02:17,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:17,043 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:17,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:02:17,043 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:17,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:17,044 INFO L82 PathProgramCache]: Analyzing trace with hash 143522214, now seen corresponding path program 1 times [2020-10-27 00:02:17,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:17,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590764586] [2020-10-27 00:02:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1689 [2020-10-27 00:02:22,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:22,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 00:02:22,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-27 00:02:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:02:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:22,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:02:22,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:02:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:02:22,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:02:22,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:22,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:02:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:22,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:02:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:02:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:02:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:22,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:02:22,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:02:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-27 00:02:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:23,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 00:02:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 830 [2020-10-27 00:02:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:02:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 00:02:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:02:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1080 [2020-10-27 00:02:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:02:23,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:02:23,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:02:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1353 [2020-10-27 00:02:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:02:23,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:02:23,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:02:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1465 [2020-10-27 00:02:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 00:02:23,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:02:23,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 00:02:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5647 backedges. 549 proven. 332 refuted. 0 times theorem prover too weak. 4766 trivial. 0 not checked. [2020-10-27 00:02:25,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590764586] [2020-10-27 00:02:25,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:25,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:25,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325060744] [2020-10-27 00:02:25,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:25,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:25,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:25,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:25,443 INFO L87 Difference]: Start difference. First operand 25227 states and 27738 transitions. Second operand 7 states.