/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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:57:09,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:57:09,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:57:09,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:57:09,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:57:09,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:57:09,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:57:09,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:57:09,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:57:09,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:57:09,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:57:09,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:57:09,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:57:09,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:57:09,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:57:09,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:57:09,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:57:09,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:57:09,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:57:09,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:57:09,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:57:09,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:57:09,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:57:09,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:57:09,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:57:09,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:57:09,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:57:09,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:57:09,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:57:09,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:57:09,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:57:09,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:57:09,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:57:09,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:57:09,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:57:09,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:57:09,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:57:09,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:57:09,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:57:09,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:57:09,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:57:09,515 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 23:57:09,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:57:09,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:57:09,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:57:09,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:57:09,573 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:57:09,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:57:09,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:57:09,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:57:09,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:57:09,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:57:09,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:57:09,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:57:09,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:57:09,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:57:09,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:57:09,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:57:09,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:57:09,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:57:09,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:57:09,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:57:09,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:57:09,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:57:09,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:57:09,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:57:09,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:57:09,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:57:09,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:57:09,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:57:09,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:57:09,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:57:10,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:57:10,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:57:10,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:57:10,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:57:10,098 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:57:10,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label29.c [2020-10-26 23:57:10,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3d2edef7/8653de00360546d19887191d693e6347/FLAGdf026b2b3 [2020-10-26 23:57:10,940 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:57:10,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label29.c [2020-10-26 23:57:10,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3d2edef7/8653de00360546d19887191d693e6347/FLAGdf026b2b3 [2020-10-26 23:57:11,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3d2edef7/8653de00360546d19887191d693e6347 [2020-10-26 23:57:11,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:57:11,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:57:11,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:57:11,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:57:11,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:57:11,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:57:11" (1/1) ... [2020-10-26 23:57:11,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d774bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:11, skipping insertion in model container [2020-10-26 23:57:11,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:57:11" (1/1) ... [2020-10-26 23:57:11,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:57:11,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:57:11,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:57:11,980 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:57:12,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:57:12,247 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:57:12,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12 WrapperNode [2020-10-26 23:57:12,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:57:12,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:57:12,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:57:12,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:57:12,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (1/1) ... [2020-10-26 23:57:12,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (1/1) ... [2020-10-26 23:57:12,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (1/1) ... [2020-10-26 23:57:12,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (1/1) ... [2020-10-26 23:57:12,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (1/1) ... [2020-10-26 23:57:12,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (1/1) ... [2020-10-26 23:57:12,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (1/1) ... [2020-10-26 23:57:12,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:57:12,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:57:12,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:57:12,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:57:12,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (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 23:57:12,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:57:12,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:57:12,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:57:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:57:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:57:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:57:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:57:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:57:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:57:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:57:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:57:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:57:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:57:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:57:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:57:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:57:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:57:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:57:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:57:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:57:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:57:15,727 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:57:15,727 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:57:15,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:57:15 BoogieIcfgContainer [2020-10-26 23:57:15,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:57:15,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:57:15,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:57:15,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:57:15,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:57:11" (1/3) ... [2020-10-26 23:57:15,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b4bafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:57:15, skipping insertion in model container [2020-10-26 23:57:15,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:12" (2/3) ... [2020-10-26 23:57:15,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b4bafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:57:15, skipping insertion in model container [2020-10-26 23:57:15,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:57:15" (3/3) ... [2020-10-26 23:57:15,740 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label29.c [2020-10-26 23:57:15,753 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:57:15,760 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:57:15,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:57:15,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:57:15,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:57:15,808 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:57:15,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:57:15,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:57:15,809 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:57:15,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:57:15,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:57:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:57:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-26 23:57:15,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:15,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:15,849 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:15,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1859974700, now seen corresponding path program 1 times [2020-10-26 23:57:15,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:15,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825038799] [2020-10-26 23:57:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:16,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:16,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 23:57:16,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-26 23:57:16,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:57:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 23:57:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:57:17,029 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:57:17,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:17,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:17,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:57:17,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:17,114 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 23:57:17,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825038799] [2020-10-26 23:57:17,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:57:17,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:57:17,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470761539] [2020-10-26 23:57:17,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:57:17,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:17,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:57:17,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:57:17,150 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-26 23:57:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:25,088 INFO L93 Difference]: Finished difference Result 1520 states and 2855 transitions. [2020-10-26 23:57:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:57:25,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-26 23:57:25,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:25,114 INFO L225 Difference]: With dead ends: 1520 [2020-10-26 23:57:25,115 INFO L226 Difference]: Without dead ends: 1039 [2020-10-26 23:57:25,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-26 23:57:25,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-26 23:57:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-26 23:57:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1486 transitions. [2020-10-26 23:57:25,265 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1486 transitions. Word has length 53 [2020-10-26 23:57:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:25,267 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1486 transitions. [2020-10-26 23:57:25,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:57:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1486 transitions. [2020-10-26 23:57:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-26 23:57:25,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:25,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:25,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:57:25,284 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:25,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:25,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1906577101, now seen corresponding path program 1 times [2020-10-26 23:57:25,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:25,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374789736] [2020-10-26 23:57:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:57:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-26 23:57:26,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:57:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:57:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:26,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:57:26,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:57:26,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:57:26,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:57:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:57:26,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374789736] [2020-10-26 23:57:26,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:57:26,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:57:26,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851842250] [2020-10-26 23:57:26,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:26,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:26,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:26,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:26,920 INFO L87 Difference]: Start difference. First operand 1035 states and 1486 transitions. Second operand 8 states. [2020-10-26 23:57:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:34,958 INFO L93 Difference]: Finished difference Result 4148 states and 6100 transitions. [2020-10-26 23:57:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:57:34,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-26 23:57:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:34,984 INFO L225 Difference]: With dead ends: 4148 [2020-10-26 23:57:34,984 INFO L226 Difference]: Without dead ends: 3119 [2020-10-26 23:57:34,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:57:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2020-10-26 23:57:35,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3103. [2020-10-26 23:57:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3103 states. [2020-10-26 23:57:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4163 transitions. [2020-10-26 23:57:35,105 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4163 transitions. Word has length 129 [2020-10-26 23:57:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:35,105 INFO L481 AbstractCegarLoop]: Abstraction has 3103 states and 4163 transitions. [2020-10-26 23:57:35,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4163 transitions. [2020-10-26 23:57:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-26 23:57:35,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:35,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:35,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:57:35,112 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:35,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:35,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1324081796, now seen corresponding path program 1 times [2020-10-26 23:57:35,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:35,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629441869] [2020-10-26 23:57:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:35,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:35,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:39,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:39,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-26 23:57:39,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:57:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4744 [2020-10-26 23:57:39,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:57:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-26 23:57:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:40,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:57:40,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:57:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 23:57:40,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:57:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:57:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:57:40,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-26 23:57:40,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:57:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:57:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,016 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-26 23:57:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 33 proven. 136 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:57:41,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629441869] [2020-10-26 23:57:41,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:41,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:57:41,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610201981] [2020-10-26 23:57:41,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:57:41,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:41,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:57:41,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:41,464 INFO L87 Difference]: Start difference. First operand 3103 states and 4163 transitions. Second operand 12 states. [2020-10-26 23:57:43,244 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-26 23:57:43,613 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-26 23:57:44,078 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-26 23:57:44,316 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-10-26 23:57:45,947 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-10-26 23:57:46,785 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-26 23:57:47,388 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-10-26 23:57:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:51,915 INFO L93 Difference]: Finished difference Result 3894 states and 5624 transitions. [2020-10-26 23:57:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 23:57:51,915 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 227 [2020-10-26 23:57:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:51,941 INFO L225 Difference]: With dead ends: 3894 [2020-10-26 23:57:51,941 INFO L226 Difference]: Without dead ends: 3891 [2020-10-26 23:57:51,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=264, Invalid=666, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:57:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2020-10-26 23:57:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3466. [2020-10-26 23:57:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3466 states. [2020-10-26 23:57:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 4842 transitions. [2020-10-26 23:57:52,076 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 4842 transitions. Word has length 227 [2020-10-26 23:57:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:52,077 INFO L481 AbstractCegarLoop]: Abstraction has 3466 states and 4842 transitions. [2020-10-26 23:57:52,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:57:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 4842 transitions. [2020-10-26 23:57:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-26 23:57:52,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:52,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 23:57:52,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:57:52,084 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1010063188, now seen corresponding path program 1 times [2020-10-26 23:57:52,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:52,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129036531] [2020-10-26 23:57:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-26 23:57:56,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:57:56,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3950 [2020-10-26 23:57:56,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:57:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:57:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:56,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:56,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:57:56,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:56,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:57:56,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:56,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:57:56,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:57:56,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:57:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:56,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:56,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:56,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:57:56,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 23:57:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-26 23:57:56,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129036531] [2020-10-26 23:57:56,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:57:56,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:57:56,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797754704] [2020-10-26 23:57:56,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:56,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:56,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:56,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:56,837 INFO L87 Difference]: Start difference. First operand 3466 states and 4842 transitions. Second operand 8 states. [2020-10-26 23:57:56,968 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:58:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:02,609 INFO L93 Difference]: Finished difference Result 7993 states and 11475 transitions. [2020-10-26 23:58:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:58:02,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 251 [2020-10-26 23:58:02,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:02,640 INFO L225 Difference]: With dead ends: 7993 [2020-10-26 23:58:02,640 INFO L226 Difference]: Without dead ends: 4533 [2020-10-26 23:58:02,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2020-10-26 23:58:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 3825. [2020-10-26 23:58:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3825 states. [2020-10-26 23:58:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 5162 transitions. [2020-10-26 23:58:02,777 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 5162 transitions. Word has length 251 [2020-10-26 23:58:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:02,778 INFO L481 AbstractCegarLoop]: Abstraction has 3825 states and 5162 transitions. [2020-10-26 23:58:02,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:58:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 5162 transitions. [2020-10-26 23:58:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-26 23:58:02,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:02,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 23:58:02,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:58:02,795 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:02,796 INFO L82 PathProgramCache]: Analyzing trace with hash 31421108, now seen corresponding path program 1 times [2020-10-26 23:58:02,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:02,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645600851] [2020-10-26 23:58:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:03,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:07,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:07,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-26 23:58:07,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:58:07,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:58:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 23:58:07,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:08,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:08,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:08,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:08,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:58:08,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:08,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:08,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:08,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:08,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:58:08,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:58:08,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:58:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:58:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:08,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:08,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:08,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:58:08,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:08,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-26 23:58:08,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:08,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:58:08,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:08,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:58:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:08,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:08,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:08,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:58:08,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-26 23:58:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:08,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:08,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:08,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:08,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:58:08,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 276 proven. 218 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-26 23:58:08,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645600851] [2020-10-26 23:58:08,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:08,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:08,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28839785] [2020-10-26 23:58:08,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:08,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:08,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:08,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:08,910 INFO L87 Difference]: Start difference. First operand 3825 states and 5162 transitions. Second operand 7 states. [2020-10-26 23:58:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:15,205 INFO L93 Difference]: Finished difference Result 9770 states and 13579 transitions. [2020-10-26 23:58:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:58:15,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-26 23:58:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:15,231 INFO L225 Difference]: With dead ends: 9770 [2020-10-26 23:58:15,231 INFO L226 Difference]: Without dead ends: 4873 [2020-10-26 23:58:15,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2020-10-26 23:58:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4506. [2020-10-26 23:58:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4506 states. [2020-10-26 23:58:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 5081 transitions. [2020-10-26 23:58:15,380 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 5081 transitions. Word has length 501 [2020-10-26 23:58:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:15,381 INFO L481 AbstractCegarLoop]: Abstraction has 4506 states and 5081 transitions. [2020-10-26 23:58:15,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 5081 transitions. [2020-10-26 23:58:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-26 23:58:15,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:15,402 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-10-26 23:58:15,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:58:15,402 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:15,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:15,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1839633557, now seen corresponding path program 1 times [2020-10-26 23:58:15,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:15,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586230772] [2020-10-26 23:58:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:15,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:20,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:20,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 634 [2020-10-26 23:58:20,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:20,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:58:20,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:20,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:20,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:20,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:58:20,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:20,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:20,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:20,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:20,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:58:20,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:20,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:20,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:20,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:58:20,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:58:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:58:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:20,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:20,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:20,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:20,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:58:20,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:20,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:58:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:58:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:21,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:21,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:21,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:21,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:58:21,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:21,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:58:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:21,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:21,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:21,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:58:21,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:21,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-26 23:58:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:58:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 225 proven. 380 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-26 23:58:21,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586230772] [2020-10-26 23:58:21,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:21,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:21,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978933907] [2020-10-26 23:58:21,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:21,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:21,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:21,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:21,804 INFO L87 Difference]: Start difference. First operand 4506 states and 5081 transitions. Second operand 7 states. [2020-10-26 23:58:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:25,568 INFO L93 Difference]: Finished difference Result 9719 states and 10942 transitions. [2020-10-26 23:58:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:58:25,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 614 [2020-10-26 23:58:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:25,591 INFO L225 Difference]: With dead ends: 9719 [2020-10-26 23:58:25,591 INFO L226 Difference]: Without dead ends: 5219 [2020-10-26 23:58:25,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:58:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2020-10-26 23:58:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 5189. [2020-10-26 23:58:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5189 states. [2020-10-26 23:58:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 5794 transitions. [2020-10-26 23:58:25,750 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 5794 transitions. Word has length 614 [2020-10-26 23:58:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:25,751 INFO L481 AbstractCegarLoop]: Abstraction has 5189 states and 5794 transitions. [2020-10-26 23:58:25,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 5794 transitions. [2020-10-26 23:58:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2020-10-26 23:58:25,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:25,788 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:25,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:58:25,789 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:25,790 INFO L82 PathProgramCache]: Analyzing trace with hash -375044357, now seen corresponding path program 1 times [2020-10-26 23:58:25,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:25,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975443399] [2020-10-26 23:58:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:30,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 773 [2020-10-26 23:58:31,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-26 23:58:31,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:58:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:58:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:31,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:58:31,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:58:31,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 23:58:31,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:58:31,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:58:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:31,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-26 23:58:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:58:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:58:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:31,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:58:31,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:58:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:32,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:58:32,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:32,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:58:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:32,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:58:32,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1342 backedges. 363 proven. 325 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2020-10-26 23:58:32,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975443399] [2020-10-26 23:58:32,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:32,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:32,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202929567] [2020-10-26 23:58:32,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:32,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:32,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:32,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:32,606 INFO L87 Difference]: Start difference. First operand 5189 states and 5794 transitions. Second operand 7 states. [2020-10-26 23:58:36,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:36,892 INFO L93 Difference]: Finished difference Result 11423 states and 12910 transitions. [2020-10-26 23:58:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:58:36,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 753 [2020-10-26 23:58:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:36,919 INFO L225 Difference]: With dead ends: 11423 [2020-10-26 23:58:36,920 INFO L226 Difference]: Without dead ends: 6577 [2020-10-26 23:58:36,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:36,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6577 states. [2020-10-26 23:58:37,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6577 to 6224. [2020-10-26 23:58:37,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6224 states. [2020-10-26 23:58:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 6900 transitions. [2020-10-26 23:58:37,083 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 6900 transitions. Word has length 753 [2020-10-26 23:58:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:37,084 INFO L481 AbstractCegarLoop]: Abstraction has 6224 states and 6900 transitions. [2020-10-26 23:58:37,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 6900 transitions. [2020-10-26 23:58:37,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2020-10-26 23:58:37,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:37,103 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:37,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:58:37,103 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:37,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1547134406, now seen corresponding path program 1 times [2020-10-26 23:58:37,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:37,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868937165] [2020-10-26 23:58:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 883 [2020-10-26 23:58:42,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-26 23:58:42,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:58:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:58:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:58:42,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:42,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:58:42,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:42,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:42,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:58:42,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:58:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:43,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-26 23:58:43,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:58:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:58:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:43,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:58:43,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:43,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:43,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:58:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:43,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:58:43,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-26 23:58:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:43,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:43,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 522 proven. 325 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2020-10-26 23:58:44,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868937165] [2020-10-26 23:58:44,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:44,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:58:44,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190622955] [2020-10-26 23:58:44,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:58:44,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:58:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:58:44,288 INFO L87 Difference]: Start difference. First operand 6224 states and 6900 transitions. Second operand 8 states. [2020-10-26 23:58:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:50,973 INFO L93 Difference]: Finished difference Result 15184 states and 17030 transitions. [2020-10-26 23:58:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:58:50,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 861 [2020-10-26 23:58:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:50,999 INFO L225 Difference]: With dead ends: 15184 [2020-10-26 23:58:50,999 INFO L226 Difference]: Without dead ends: 9305 [2020-10-26 23:58:51,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-26 23:58:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9305 states. [2020-10-26 23:58:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 8960. [2020-10-26 23:58:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8960 states. [2020-10-26 23:58:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8960 states to 8960 states and 9902 transitions. [2020-10-26 23:58:51,193 INFO L78 Accepts]: Start accepts. Automaton has 8960 states and 9902 transitions. Word has length 861 [2020-10-26 23:58:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:51,194 INFO L481 AbstractCegarLoop]: Abstraction has 8960 states and 9902 transitions. [2020-10-26 23:58:51,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:58:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 8960 states and 9902 transitions. [2020-10-26 23:58:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2020-10-26 23:58:51,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:51,222 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:58:51,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:58:51,222 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:51,223 INFO L82 PathProgramCache]: Analyzing trace with hash -396722530, now seen corresponding path program 1 times [2020-10-26 23:58:51,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:51,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413961549] [2020-10-26 23:58:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:51,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:52,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:56,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1041 [2020-10-26 23:58:56,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:58:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:58:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:58:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:56,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:56,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:58:56,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:56,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:57,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-26 23:58:57,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:58:57,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:58:57,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-26 23:58:57,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:58:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:57,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:58:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:57,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:58:57,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-26 23:58:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:57,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:58:57,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:57,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2020-10-26 23:58:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:58,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:58,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:58,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:58,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-26 23:58:58,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:58,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 867 [2020-10-26 23:58:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:58,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:58:58,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 287 proven. 1142 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-26 23:58:59,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413961549] [2020-10-26 23:58:59,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:59,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:58:59,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225883724] [2020-10-26 23:58:59,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:58:59,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:59,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:58:59,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:58:59,328 INFO L87 Difference]: Start difference. First operand 8960 states and 9902 transitions. Second operand 8 states. [2020-10-26 23:59:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:03,293 INFO L93 Difference]: Finished difference Result 17589 states and 19481 transitions. [2020-10-26 23:59:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:59:03,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1019 [2020-10-26 23:59:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:03,325 INFO L225 Difference]: With dead ends: 17589 [2020-10-26 23:59:03,325 INFO L226 Difference]: Without dead ends: 8974 [2020-10-26 23:59:03,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:59:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8974 states. [2020-10-26 23:59:03,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8974 to 8962. [2020-10-26 23:59:03,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8962 states. [2020-10-26 23:59:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8962 states to 8962 states and 9903 transitions. [2020-10-26 23:59:03,530 INFO L78 Accepts]: Start accepts. Automaton has 8962 states and 9903 transitions. Word has length 1019 [2020-10-26 23:59:03,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:03,531 INFO L481 AbstractCegarLoop]: Abstraction has 8962 states and 9903 transitions. [2020-10-26 23:59:03,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:59:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8962 states and 9903 transitions. [2020-10-26 23:59:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1124 [2020-10-26 23:59:03,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:03,560 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:03,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:59:03,561 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:03,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:03,561 INFO L82 PathProgramCache]: Analyzing trace with hash 266821542, now seen corresponding path program 1 times [2020-10-26 23:59:03,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:03,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924354207] [2020-10-26 23:59:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1149 [2020-10-26 23:59:08,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:08,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:59:08,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:59:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:59:08,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:08,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:59:08,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:08,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-26 23:59:09,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:59:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:59:09,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 23:59:09,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:59:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-26 23:59:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:09,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:59:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:59:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-26 23:59:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:59:09,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:59:09,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:59:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-26 23:59:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:59:10,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-26 23:59:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:10,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:59:10,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2020-10-26 23:59:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:10,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:59:10,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-26 23:59:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:10,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:59:10,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:59:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3327 backedges. 543 proven. 653 refuted. 0 times theorem prover too weak. 2131 trivial. 0 not checked. [2020-10-26 23:59:11,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924354207] [2020-10-26 23:59:11,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:11,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:11,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818715321] [2020-10-26 23:59:11,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:11,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:11,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:11,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:11,493 INFO L87 Difference]: Start difference. First operand 8962 states and 9903 transitions. Second operand 7 states. [2020-10-26 23:59:16,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:16,292 INFO L93 Difference]: Finished difference Result 17593 states and 19504 transitions. [2020-10-26 23:59:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:59:16,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1123 [2020-10-26 23:59:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:16,320 INFO L225 Difference]: With dead ends: 17593 [2020-10-26 23:59:16,320 INFO L226 Difference]: Without dead ends: 8976 [2020-10-26 23:59:16,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:59:16,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8976 states. [2020-10-26 23:59:16,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8976 to 8968. [2020-10-26 23:59:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2020-10-26 23:59:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 9913 transitions. [2020-10-26 23:59:16,539 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 9913 transitions. Word has length 1123 [2020-10-26 23:59:16,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:16,540 INFO L481 AbstractCegarLoop]: Abstraction has 8968 states and 9913 transitions. [2020-10-26 23:59:16,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 9913 transitions. [2020-10-26 23:59:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2020-10-26 23:59:16,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:16,570 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:16,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:59:16,570 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:16,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash -379858616, now seen corresponding path program 1 times [2020-10-26 23:59:16,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:16,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102375665] [2020-10-26 23:59:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:16,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:17,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:21,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:21,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1152 [2020-10-26 23:59:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:59:21,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-26 23:59:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:21,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:21,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:21,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:21,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:22,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:59:22,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:59:22,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:59:22,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:59:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:59:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:22,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:59:22,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:22,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-26 23:59:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:59:22,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:59:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:59:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-26 23:59:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:22,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:59:22,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2020-10-26 23:59:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-10-26 23:59:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:22,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:59:22,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:22,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 974 [2020-10-26 23:59:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:22,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:22,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:22,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:59:22,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:59:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3322 backedges. 657 proven. 518 refuted. 0 times theorem prover too weak. 2147 trivial. 0 not checked. [2020-10-26 23:59:23,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102375665] [2020-10-26 23:59:23,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:23,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:23,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157118540] [2020-10-26 23:59:23,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:23,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:23,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:23,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:23,480 INFO L87 Difference]: Start difference. First operand 8968 states and 9913 transitions. Second operand 7 states. [2020-10-26 23:59:27,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:27,467 INFO L93 Difference]: Finished difference Result 17604 states and 19495 transitions. [2020-10-26 23:59:27,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:59:27,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1126 [2020-10-26 23:59:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:27,495 INFO L225 Difference]: With dead ends: 17604 [2020-10-26 23:59:27,495 INFO L226 Difference]: Without dead ends: 8981 [2020-10-26 23:59:27,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8981 states. [2020-10-26 23:59:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8981 to 8969. [2020-10-26 23:59:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8969 states. [2020-10-26 23:59:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8969 states to 8969 states and 9820 transitions. [2020-10-26 23:59:27,683 INFO L78 Accepts]: Start accepts. Automaton has 8969 states and 9820 transitions. Word has length 1126 [2020-10-26 23:59:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:27,684 INFO L481 AbstractCegarLoop]: Abstraction has 8969 states and 9820 transitions. [2020-10-26 23:59:27,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 8969 states and 9820 transitions. [2020-10-26 23:59:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2020-10-26 23:59:27,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:27,714 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:59:27,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:59:27,714 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:27,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2121278319, now seen corresponding path program 1 times [2020-10-26 23:59:27,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:27,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25764447] [2020-10-26 23:59:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1354 [2020-10-26 23:59:32,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:59:32,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:59:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:33,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:33,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:33,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:33,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:33,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:33,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:33,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:59:33,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:33,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:33,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:59:33,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-26 23:59:33,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:59:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:59:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:33,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:33,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:33,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:33,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:59:33,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:33,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:33,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:33,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:33,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:59:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:33,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:59:33,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:59:33,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:59:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-26 23:59:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:33,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:33,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:33,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:33,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:59:33,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:33,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:33,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:33,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-26 23:59:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:33,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:33,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:59:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:59:33,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:59:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 926 [2020-10-26 23:59:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:34,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:34,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:34,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:34,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:59:34,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:34,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:34,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1036 [2020-10-26 23:59:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:34,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:34,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:34,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:59:34,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:34,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1174 [2020-10-26 23:59:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:34,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:34,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:34,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:34,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:59:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:59:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 710 proven. 644 refuted. 0 times theorem prover too weak. 3032 trivial. 0 not checked. [2020-10-26 23:59:35,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25764447] [2020-10-26 23:59:35,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:35,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:35,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852635955] [2020-10-26 23:59:35,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:35,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:35,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:35,431 INFO L87 Difference]: Start difference. First operand 8969 states and 9820 transitions. Second operand 7 states. [2020-10-26 23:59:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:40,573 INFO L93 Difference]: Finished difference Result 20665 states and 22809 transitions. [2020-10-26 23:59:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:59:40,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1326 [2020-10-26 23:59:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:40,605 INFO L225 Difference]: With dead ends: 20665 [2020-10-26 23:59:40,606 INFO L226 Difference]: Without dead ends: 12041 [2020-10-26 23:59:40,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:59:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12041 states. [2020-10-26 23:59:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12041 to 12033. [2020-10-26 23:59:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12033 states. [2020-10-26 23:59:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12033 states to 12033 states and 13133 transitions. [2020-10-26 23:59:40,856 INFO L78 Accepts]: Start accepts. Automaton has 12033 states and 13133 transitions. Word has length 1326 [2020-10-26 23:59:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:40,857 INFO L481 AbstractCegarLoop]: Abstraction has 12033 states and 13133 transitions. [2020-10-26 23:59:40,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 12033 states and 13133 transitions. [2020-10-26 23:59:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1395 [2020-10-26 23:59:40,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:40,895 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:40,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:59:40,895 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash 566807951, now seen corresponding path program 1 times [2020-10-26 23:59:40,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:40,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141092866] [2020-10-26 23:59:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:41,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:41,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:41,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:46,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:46,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1422 [2020-10-26 23:59:46,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-26 23:59:46,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:59:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:46,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:46,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:59:46,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:46,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:46,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:46,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:46,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:59:46,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:46,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:46,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:59:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:59:46,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:59:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:59:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:46,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:46,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:46,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:46,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:59:46,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:46,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:46,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:46,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:46,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:46,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:59:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:46,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:46,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:59:46,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:59:47,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:59:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:47,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-26 23:59:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:47,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:47,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:47,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:47,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:59:47,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:47,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:47,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-10-26 23:59:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:47,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:47,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:59:47,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:59:47,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:59:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1059 [2020-10-26 23:59:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:47,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:47,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:59:47,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:59:47,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:59:47,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1171 [2020-10-26 23:59:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:47,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:47,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 23:59:47,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:59:47,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-26 23:59:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:47,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1242 [2020-10-26 23:59:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:47,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:47,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:47,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:59:47,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:47,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:47,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:59:47,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4200 backedges. 710 proven. 588 refuted. 0 times theorem prover too weak. 2902 trivial. 0 not checked. [2020-10-26 23:59:48,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141092866] [2020-10-26 23:59:48,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:48,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:48,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052964397] [2020-10-26 23:59:48,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:48,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:48,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:48,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:48,629 INFO L87 Difference]: Start difference. First operand 12033 states and 13133 transitions. Second operand 7 states. [2020-10-26 23:59:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:52,865 INFO L93 Difference]: Finished difference Result 27787 states and 30643 transitions. [2020-10-26 23:59:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:59:52,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1394 [2020-10-26 23:59:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:52,911 INFO L225 Difference]: With dead ends: 27787 [2020-10-26 23:59:52,912 INFO L226 Difference]: Without dead ends: 16099 [2020-10-26 23:59:52,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:59:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16099 states. [2020-10-26 23:59:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16099 to 15083. [2020-10-26 23:59:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15083 states. [2020-10-26 23:59:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15083 states to 15083 states and 16717 transitions. [2020-10-26 23:59:53,233 INFO L78 Accepts]: Start accepts. Automaton has 15083 states and 16717 transitions. Word has length 1394 [2020-10-26 23:59:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:53,234 INFO L481 AbstractCegarLoop]: Abstraction has 15083 states and 16717 transitions. [2020-10-26 23:59:53,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 15083 states and 16717 transitions. [2020-10-26 23:59:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1440 [2020-10-26 23:59:53,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:53,276 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 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, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:53,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:59:53,276 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:53,277 INFO L82 PathProgramCache]: Analyzing trace with hash 788336516, now seen corresponding path program 1 times [2020-10-26 23:59:53,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:53,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67502269] [2020-10-26 23:59:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1469 [2020-10-26 23:59:58,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:58,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-26 23:59:58,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:59:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:59:58,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:58,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:58,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:58,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:58,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:59:58,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:59:59,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:59:59,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:59:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:59:59,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:59:59,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:59:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:59,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:59:59,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:59:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:59:59,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:59:59,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:59:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:59:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:59,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:59:59,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:59:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-26 23:59:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:59:59,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:59:59,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:59:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1104 [2020-10-26 23:59:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:59:59,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:59:59,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:59:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1216 [2020-10-26 23:59:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 23:59:59,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:59:59,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-26 23:59:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1287 [2020-10-26 23:59:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:59:59,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:59:59,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:59:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4968 backedges. 1050 proven. 395 refuted. 0 times theorem prover too weak. 3523 trivial. 0 not checked. [2020-10-27 00:00:01,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67502269] [2020-10-27 00:00:01,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:01,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:01,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418836378] [2020-10-27 00:00:01,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:01,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:01,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:01,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:01,079 INFO L87 Difference]: Start difference. First operand 15083 states and 16717 transitions. Second operand 7 states. [2020-10-27 00:00:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:07,812 INFO L93 Difference]: Finished difference Result 33213 states and 36886 transitions. [2020-10-27 00:00:07,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:00:07,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1439 [2020-10-27 00:00:07,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:07,858 INFO L225 Difference]: With dead ends: 33213 [2020-10-27 00:00:07,858 INFO L226 Difference]: Without dead ends: 18475 [2020-10-27 00:00:07,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:07,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18475 states. [2020-10-27 00:00:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18475 to 18134. [2020-10-27 00:00:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18134 states. [2020-10-27 00:00:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18134 states to 18134 states and 19955 transitions. [2020-10-27 00:00:08,258 INFO L78 Accepts]: Start accepts. Automaton has 18134 states and 19955 transitions. Word has length 1439 [2020-10-27 00:00:08,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:08,259 INFO L481 AbstractCegarLoop]: Abstraction has 18134 states and 19955 transitions. [2020-10-27 00:00:08,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:08,259 INFO L276 IsEmpty]: Start isEmpty. Operand 18134 states and 19955 transitions. [2020-10-27 00:00:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1450 [2020-10-27 00:00:08,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:08,296 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:00:08,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:00:08,297 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1462382095, now seen corresponding path program 1 times [2020-10-27 00:00:08,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:08,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131250527] [2020-10-27 00:00:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:13,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:13,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1477 [2020-10-27 00:00:13,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:00:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 00:00:13,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:00:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:00:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:13,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:13,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:13,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:13,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:13,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:13,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:00:13,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:13,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:13,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:13,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:13,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:00:13,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:00:13,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:14,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:00:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:14,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:14,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:14,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:00:14,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:00:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:14,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:14,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:00:14,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:14,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:00:14,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:14,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:14,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:00:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:14,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:14,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:00:14,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:00:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:14,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:14,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:00:14,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:14,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 00:00:14,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:14,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:14,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:14,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:00:14,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-27 00:00:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:00:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:15,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:15,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:15,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:15,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-27 00:00:15,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:15,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:00:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:00:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:15,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:15,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:00:15,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:15,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:00:15,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:00:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:15,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:15,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-27 00:00:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:15,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:15,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:00:15,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:00:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:00:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-27 00:00:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:15,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:00:15,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:00:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 00:00:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 1303 proven. 283 refuted. 0 times theorem prover too weak. 2928 trivial. 0 not checked. [2020-10-27 00:00:17,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131250527] [2020-10-27 00:00:17,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:17,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:17,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154519964] [2020-10-27 00:00:17,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:17,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:17,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:17,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:17,247 INFO L87 Difference]: Start difference. First operand 18134 states and 19955 transitions. Second operand 7 states. [2020-10-27 00:00:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:21,597 INFO L93 Difference]: Finished difference Result 35933 states and 39577 transitions. [2020-10-27 00:00:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:00:21,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1449 [2020-10-27 00:00:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:21,639 INFO L225 Difference]: With dead ends: 35933 [2020-10-27 00:00:21,639 INFO L226 Difference]: Without dead ends: 18144 [2020-10-27 00:00:21,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:00:21,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18144 states. [2020-10-27 00:00:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18144 to 18134. [2020-10-27 00:00:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18134 states. [2020-10-27 00:00:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18134 states to 18134 states and 19943 transitions. [2020-10-27 00:00:21,995 INFO L78 Accepts]: Start accepts. Automaton has 18134 states and 19943 transitions. Word has length 1449 [2020-10-27 00:00:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:21,996 INFO L481 AbstractCegarLoop]: Abstraction has 18134 states and 19943 transitions. [2020-10-27 00:00:21,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 18134 states and 19943 transitions. [2020-10-27 00:00:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2020-10-27 00:00:22,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:22,180 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 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, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2020-10-27 00:00:22,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:00:22,181 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:22,182 INFO L82 PathProgramCache]: Analyzing trace with hash -363672064, now seen corresponding path program 1 times [2020-10-27 00:00:22,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:22,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222844580] [2020-10-27 00:00:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:27,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:27,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1531 [2020-10-27 00:00:27,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:00:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 00:00:27,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-27 00:00:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 00:00:27,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:27,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:27,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:00:27,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:27,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:27,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:27,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:00:27,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:00:27,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:27,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:00:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:27,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:27,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:27,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:00:27,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:00:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:27,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:27,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:00:27,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:00:27,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:00:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:27,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:27,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:27,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:00:27,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:00:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:27,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:00:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:00:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:00:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 00:00:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2020-10-27 00:00:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:28,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:28,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:28,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:00:28,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-27 00:00:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:28,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:28,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:28,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:00:28,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:00:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1166 [2020-10-27 00:00:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:28,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:28,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:00:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:00:28,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:00:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:28,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1278 [2020-10-27 00:00:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:28,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:28,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:00:28,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:00:28,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:00:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1349 [2020-10-27 00:00:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:28,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:28,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:00:28,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:00:28,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 00:00:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5368 backedges. 1026 proven. 524 refuted. 0 times theorem prover too weak. 3818 trivial. 0 not checked. [2020-10-27 00:00:29,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222844580] [2020-10-27 00:00:29,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:29,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:00:29,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096223176] [2020-10-27 00:00:29,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:00:29,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:00:29,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:00:29,771 INFO L87 Difference]: Start difference. First operand 18134 states and 19943 transitions. Second operand 8 states. [2020-10-27 00:00:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:35,586 INFO L93 Difference]: Finished difference Result 35939 states and 39559 transitions. [2020-10-27 00:00:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:00:35,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1501 [2020-10-27 00:00:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:35,626 INFO L225 Difference]: With dead ends: 35939 [2020-10-27 00:00:35,626 INFO L226 Difference]: Without dead ends: 18150 [2020-10-27 00:00:35,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-27 00:00:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18150 states. [2020-10-27 00:00:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18150 to 17805. [2020-10-27 00:00:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17805 states. [2020-10-27 00:00:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17805 states to 17805 states and 18847 transitions. [2020-10-27 00:00:35,969 INFO L78 Accepts]: Start accepts. Automaton has 17805 states and 18847 transitions. Word has length 1501 [2020-10-27 00:00:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:35,970 INFO L481 AbstractCegarLoop]: Abstraction has 17805 states and 18847 transitions. [2020-10-27 00:00:35,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:00:35,971 INFO L276 IsEmpty]: Start isEmpty. Operand 17805 states and 18847 transitions. [2020-10-27 00:00:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1624 [2020-10-27 00:00:36,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:36,018 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:36,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 00:00:36,018 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:36,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2127339765, now seen corresponding path program 1 times [2020-10-27 00:00:36,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:36,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378314148] [2020-10-27 00:00:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:36,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking...