/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:35:39,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:35:39,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:35:39,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:35:39,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:35:39,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:35:39,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:35:39,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:35:39,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:35:39,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:35:39,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:35:39,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:35:39,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:35:39,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:35:39,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:35:39,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:35:39,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:35:39,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:35:39,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:35:39,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:35:39,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:35:39,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:35:39,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:35:39,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:35:39,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:35:39,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:35:39,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:35:39,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:35:39,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:35:39,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:35:39,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:35:39,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:35:39,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:35:39,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:35:39,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:35:39,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:35:39,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:35:39,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:35:39,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:35:39,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:35:39,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:35:39,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 18:35:39,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:35:39,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:35:39,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:35:39,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:35:39,753 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:35:39,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:35:39,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:35:39,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:35:39,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:35:39,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:35:39,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:35:39,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:35:39,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:35:39,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:35:39,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:35:39,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:35:39,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:35:39,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:35:39,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:35:39,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:35:39,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:35:39,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:35:39,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:35:39,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:35:39,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:35:39,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:35:39,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:35:39,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:35:39,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:35:39,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:35:40,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:35:40,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:35:40,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:35:40,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:35:40,287 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:35:40,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label04.c [2020-10-27 18:35:40,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c7cf205d/0ce6a7eaac3a46ef8b1566f027f7ebf2/FLAGffc5a3def [2020-10-27 18:35:41,337 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:35:41,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label04.c [2020-10-27 18:35:41,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c7cf205d/0ce6a7eaac3a46ef8b1566f027f7ebf2/FLAGffc5a3def [2020-10-27 18:35:41,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c7cf205d/0ce6a7eaac3a46ef8b1566f027f7ebf2 [2020-10-27 18:35:41,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:35:41,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:35:41,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:35:41,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:35:41,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:35:41,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:35:41" (1/1) ... [2020-10-27 18:35:41,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:41, skipping insertion in model container [2020-10-27 18:35:41,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:35:41" (1/1) ... [2020-10-27 18:35:41,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:35:41,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:35:42,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:35:42,476 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:35:42,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:35:42,869 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:35:42,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42 WrapperNode [2020-10-27 18:35:42,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:35:42,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:35:42,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:35:42,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:35:42,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (1/1) ... [2020-10-27 18:35:42,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (1/1) ... [2020-10-27 18:35:42,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (1/1) ... [2020-10-27 18:35:42,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (1/1) ... [2020-10-27 18:35:43,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (1/1) ... [2020-10-27 18:35:43,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (1/1) ... [2020-10-27 18:35:43,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (1/1) ... [2020-10-27 18:35:43,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:35:43,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:35:43,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:35:43,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:35:43,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:35:43,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:35:43,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:35:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:35:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:35:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:35:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:35:43,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:35:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:35:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:35:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:35:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:35:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:35:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:35:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:35:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:35:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:35:43,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:35:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:35:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:35:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:35:43,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:35:46,911 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:35:46,912 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:35:46,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:35:46 BoogieIcfgContainer [2020-10-27 18:35:46,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:35:46,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:35:46,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:35:46,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:35:46,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:35:41" (1/3) ... [2020-10-27 18:35:46,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3374ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:35:46, skipping insertion in model container [2020-10-27 18:35:46,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:35:42" (2/3) ... [2020-10-27 18:35:46,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3374ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:35:46, skipping insertion in model container [2020-10-27 18:35:46,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:35:46" (3/3) ... [2020-10-27 18:35:46,929 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label04.c [2020-10-27 18:35:46,945 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:35:46,952 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:35:46,969 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:35:47,008 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:35:47,008 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:35:47,008 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:35:47,008 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:35:47,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:35:47,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:35:47,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:35:47,009 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:35:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:35:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 18:35:47,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:47,054 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] [2020-10-27 18:35:47,054 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:47,062 INFO L82 PathProgramCache]: Analyzing trace with hash 105500644, now seen corresponding path program 1 times [2020-10-27 18:35:47,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:47,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531331199] [2020-10-27 18:35:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:47,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:47,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 18:35:47,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-27 18:35:47,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:35:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:35:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 18:35:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:35:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:48,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:48,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:35:48,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:35:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:35:48,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531331199] [2020-10-27 18:35:48,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:35:48,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:35:48,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814151256] [2020-10-27 18:35:48,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:35:48,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:48,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:35:48,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:35:48,179 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 18:35:48,376 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:35:49,378 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:35:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:58,195 INFO L93 Difference]: Finished difference Result 1520 states and 2853 transitions. [2020-10-27 18:35:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:35:58,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-27 18:35:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:58,230 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 18:35:58,230 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 18:35:58,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:35:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 18:35:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-27 18:35:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-27 18:35:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1630 transitions. [2020-10-27 18:35:58,414 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1630 transitions. Word has length 35 [2020-10-27 18:35:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:58,415 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1630 transitions. [2020-10-27 18:35:58,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:35:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1630 transitions. [2020-10-27 18:35:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 18:35:58,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:58,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:58,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:35:58,423 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:58,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1889893059, now seen corresponding path program 1 times [2020-10-27 18:35:58,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:58,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325659577] [2020-10-27 18:35:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 18:35:59,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:35:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1349 [2020-10-27 18:35:59,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:35:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 18:35:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:36:00,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:00,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:00,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:00,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:36:00,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:00,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:00,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:00,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:36:00,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:36:00,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:36:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:36:00,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325659577] [2020-10-27 18:36:00,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:00,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:36:00,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185903388] [2020-10-27 18:36:00,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:36:00,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:00,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:36:00,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:36:00,223 INFO L87 Difference]: Start difference. First operand 1032 states and 1630 transitions. Second operand 5 states. [2020-10-27 18:36:06,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:06,880 INFO L93 Difference]: Finished difference Result 3091 states and 4933 transitions. [2020-10-27 18:36:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:06,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 18:36:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:06,904 INFO L225 Difference]: With dead ends: 3091 [2020-10-27 18:36:06,904 INFO L226 Difference]: Without dead ends: 2065 [2020-10-27 18:36:06,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2020-10-27 18:36:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2061. [2020-10-27 18:36:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-27 18:36:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2868 transitions. [2020-10-27 18:36:07,049 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2868 transitions. Word has length 110 [2020-10-27 18:36:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:07,052 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2868 transitions. [2020-10-27 18:36:07,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:36:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2868 transitions. [2020-10-27 18:36:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 18:36:07,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:07,068 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:36:07,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:36:07,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:07,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1330481356, now seen corresponding path program 1 times [2020-10-27 18:36:07,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:07,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76598077] [2020-10-27 18:36:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:07,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:10,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:10,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 18:36:10,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:36:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3770 [2020-10-27 18:36:10,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:36:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 18:36:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:11,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:11,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:11,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:11,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:36:11,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:11,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:11,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:11,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:11,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:11,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:11,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:36:11,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:11,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:11,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:36:11,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:11,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:36:11,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:36:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 18:36:11,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76598077] [2020-10-27 18:36:11,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:11,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:36:11,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188425687] [2020-10-27 18:36:11,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:36:11,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:11,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:36:11,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:36:11,397 INFO L87 Difference]: Start difference. First operand 2061 states and 2868 transitions. Second operand 5 states. [2020-10-27 18:36:12,631 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:36:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:18,507 INFO L93 Difference]: Finished difference Result 5485 states and 7817 transitions. [2020-10-27 18:36:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:18,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-27 18:36:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:18,534 INFO L225 Difference]: With dead ends: 5485 [2020-10-27 18:36:18,534 INFO L226 Difference]: Without dead ends: 3430 [2020-10-27 18:36:18,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2020-10-27 18:36:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3426. [2020-10-27 18:36:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3426 states. [2020-10-27 18:36:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4622 transitions. [2020-10-27 18:36:18,673 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4622 transitions. Word has length 209 [2020-10-27 18:36:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:18,674 INFO L481 AbstractCegarLoop]: Abstraction has 3426 states and 4622 transitions. [2020-10-27 18:36:18,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:36:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4622 transitions. [2020-10-27 18:36:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 18:36:18,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:18,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:18,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:36:18,683 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1275673629, now seen corresponding path program 1 times [2020-10-27 18:36:18,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:18,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611178545] [2020-10-27 18:36:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:23,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:23,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-27 18:36:23,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:36:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 18:36:23,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:36:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:36:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:23,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:23,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:23,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:23,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:36:23,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:23,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:23,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:23,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:23,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:36:23,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:24,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:24,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:36:24,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:24,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:36:24,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:36:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:24,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 18:36:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:24,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:24,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:36:24,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:24,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 18:36:24,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:36:24,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 18:36:24,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611178545] [2020-10-27 18:36:24,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:24,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:36:24,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645722527] [2020-10-27 18:36:24,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:36:24,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:24,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:36:24,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:36:24,459 INFO L87 Difference]: Start difference. First operand 3426 states and 4622 transitions. Second operand 7 states. [2020-10-27 18:36:24,672 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:36:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:31,634 INFO L93 Difference]: Finished difference Result 6880 states and 9314 transitions. [2020-10-27 18:36:31,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:36:31,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-27 18:36:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:31,661 INFO L225 Difference]: With dead ends: 6880 [2020-10-27 18:36:31,661 INFO L226 Difference]: Without dead ends: 3460 [2020-10-27 18:36:31,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:36:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2020-10-27 18:36:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 2762. [2020-10-27 18:36:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-27 18:36:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 3520 transitions. [2020-10-27 18:36:31,770 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 3520 transitions. Word has length 285 [2020-10-27 18:36:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:31,770 INFO L481 AbstractCegarLoop]: Abstraction has 2762 states and 3520 transitions. [2020-10-27 18:36:31,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:36:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 3520 transitions. [2020-10-27 18:36:31,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-27 18:36:31,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:31,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 18:36:31,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:36:31,778 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash 701308477, now seen corresponding path program 1 times [2020-10-27 18:36:31,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:31,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246474799] [2020-10-27 18:36:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:36,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:36,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-27 18:36:36,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:36:36,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 18:36:36,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-27 18:36:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 18:36:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:37,083 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:36:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:37,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:37,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:37,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:36:37,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:37,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:37,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:36:37,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:37,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:36:37,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:37,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:36:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:37,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:37,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:36:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:36:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:37,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:36:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:37,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:36:37,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:36:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 18:36:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-27 18:36:37,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246474799] [2020-10-27 18:36:37,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:37,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:36:37,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515860334] [2020-10-27 18:36:37,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:36:37,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:37,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:36:37,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:36:37,546 INFO L87 Difference]: Start difference. First operand 2762 states and 3520 transitions. Second operand 5 states. [2020-10-27 18:36:40,327 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 18:36:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:42,451 INFO L93 Difference]: Finished difference Result 5530 states and 7056 transitions. [2020-10-27 18:36:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:42,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2020-10-27 18:36:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:42,471 INFO L225 Difference]: With dead ends: 5530 [2020-10-27 18:36:42,471 INFO L226 Difference]: Without dead ends: 2766 [2020-10-27 18:36:42,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:42,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2020-10-27 18:36:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2762. [2020-10-27 18:36:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-27 18:36:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 3518 transitions. [2020-10-27 18:36:42,578 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 3518 transitions. Word has length 337 [2020-10-27 18:36:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:42,579 INFO L481 AbstractCegarLoop]: Abstraction has 2762 states and 3518 transitions. [2020-10-27 18:36:42,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:36:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 3518 transitions. [2020-10-27 18:36:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-27 18:36:42,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:42,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:42,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:36:42,591 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:42,592 INFO L82 PathProgramCache]: Analyzing trace with hash 260541369, now seen corresponding path program 1 times [2020-10-27 18:36:42,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:42,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360072539] [2020-10-27 18:36:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:42,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:47,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:47,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-27 18:36:47,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:36:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 18:36:47,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-10-27 18:36:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 18:36:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:47,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:47,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:47,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:47,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:36:47,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:47,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:47,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:47,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:36:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:36:47,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:36:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:48,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:48,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:36:48,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:36:48,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:36:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:36:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 18:36:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-27 18:36:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:36:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-27 18:36:48,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360072539] [2020-10-27 18:36:48,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:48,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:36:48,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173949874] [2020-10-27 18:36:48,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:36:48,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:48,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:36:48,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:36:48,565 INFO L87 Difference]: Start difference. First operand 2762 states and 3518 transitions. Second operand 5 states. [2020-10-27 18:36:49,750 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:36:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:55,912 INFO L93 Difference]: Finished difference Result 7219 states and 9420 transitions. [2020-10-27 18:36:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:55,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2020-10-27 18:36:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:55,945 INFO L225 Difference]: With dead ends: 7219 [2020-10-27 18:36:55,946 INFO L226 Difference]: Without dead ends: 4463 [2020-10-27 18:36:55,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2020-10-27 18:36:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3785. [2020-10-27 18:36:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3785 states. [2020-10-27 18:36:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 4574 transitions. [2020-10-27 18:36:56,098 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 4574 transitions. Word has length 399 [2020-10-27 18:36:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:56,099 INFO L481 AbstractCegarLoop]: Abstraction has 3785 states and 4574 transitions. [2020-10-27 18:36:56,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:36:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 4574 transitions. [2020-10-27 18:36:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-27 18:36:56,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:56,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:56,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:36:56,113 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:56,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1660641329, now seen corresponding path program 1 times [2020-10-27 18:36:56,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:56,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135175622] [2020-10-27 18:36:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:01,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-27 18:37:01,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:37:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 18:37:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 427 [2020-10-27 18:37:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 18:37:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:01,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:01,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:37:01,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:01,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:01,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:37:01,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 18:37:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:37:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:01,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:01,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:01,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:37:01,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:01,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:37:01,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:01,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:37:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:02,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:02,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 18:37:02,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 18:37:02,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 18:37:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-27 18:37:02,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135175622] [2020-10-27 18:37:02,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:02,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:37:02,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318748551] [2020-10-27 18:37:02,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:37:02,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:02,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:37:02,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:37:02,334 INFO L87 Difference]: Start difference. First operand 3785 states and 4574 transitions. Second operand 5 states. [2020-10-27 18:37:06,320 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 18:37:07,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:07,163 INFO L93 Difference]: Finished difference Result 7588 states and 9179 transitions. [2020-10-27 18:37:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:37:07,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 448 [2020-10-27 18:37:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:07,185 INFO L225 Difference]: With dead ends: 7588 [2020-10-27 18:37:07,185 INFO L226 Difference]: Without dead ends: 3789 [2020-10-27 18:37:07,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:37:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2020-10-27 18:37:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3785. [2020-10-27 18:37:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3785 states. [2020-10-27 18:37:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 4570 transitions. [2020-10-27 18:37:07,306 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 4570 transitions. Word has length 448 [2020-10-27 18:37:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:07,307 INFO L481 AbstractCegarLoop]: Abstraction has 3785 states and 4570 transitions. [2020-10-27 18:37:07,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:37:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 4570 transitions. [2020-10-27 18:37:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-27 18:37:07,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:07,322 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:07,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:37:07,322 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:07,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1343172021, now seen corresponding path program 1 times [2020-10-27 18:37:07,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:07,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814842422] [2020-10-27 18:37:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:07,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:12,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:12,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-27 18:37:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:37:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 18:37:12,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 429 [2020-10-27 18:37:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 18:37:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:12,593 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:37:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:12,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:12,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:12,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:37:12,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:12,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:12,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:12,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:37:12,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:37:12,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:37:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:12,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:12,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:37:12,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:12,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:37:12,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:12,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:12,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:37:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:12,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:37:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:37:12,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 18:37:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-27 18:37:13,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814842422] [2020-10-27 18:37:13,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:13,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:37:13,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137601117] [2020-10-27 18:37:13,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:37:13,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:13,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:37:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:37:13,091 INFO L87 Difference]: Start difference. First operand 3785 states and 4570 transitions. Second operand 5 states. [2020-10-27 18:37:15,086 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:37:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:20,835 INFO L93 Difference]: Finished difference Result 10294 states and 12616 transitions. [2020-10-27 18:37:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:37:20,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 450 [2020-10-27 18:37:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:20,872 INFO L225 Difference]: With dead ends: 10294 [2020-10-27 18:37:20,872 INFO L226 Difference]: Without dead ends: 6515 [2020-10-27 18:37:20,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:37:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2020-10-27 18:37:21,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 6174. [2020-10-27 18:37:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-10-27 18:37:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 7318 transitions. [2020-10-27 18:37:21,065 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 7318 transitions. Word has length 450 [2020-10-27 18:37:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:21,066 INFO L481 AbstractCegarLoop]: Abstraction has 6174 states and 7318 transitions. [2020-10-27 18:37:21,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:37:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 7318 transitions. [2020-10-27 18:37:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-27 18:37:21,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:21,087 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:21,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:37:21,088 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:21,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1048129131, now seen corresponding path program 1 times [2020-10-27 18:37:21,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:21,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898770760] [2020-10-27 18:37:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:21,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:21,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:21,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:23,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:26,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:26,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-27 18:37:26,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:37:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 18:37:26,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 488 [2020-10-27 18:37:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:37:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:26,476 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:37:26,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:26,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:26,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:26,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:37:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:26,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:26,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:37:26,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:26,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:37:26,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:26,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:37:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:26,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:26,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:37:26,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:37:26,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:37:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:26,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:26,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:37:26,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 18:37:26,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-27 18:37:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-27 18:37:27,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898770760] [2020-10-27 18:37:27,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:27,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:37:27,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716831590] [2020-10-27 18:37:27,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:37:27,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:27,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:37:27,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:37:27,194 INFO L87 Difference]: Start difference. First operand 6174 states and 7318 transitions. Second operand 5 states. [2020-10-27 18:37:31,296 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 18:37:31,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:31,710 INFO L93 Difference]: Finished difference Result 12367 states and 14668 transitions. [2020-10-27 18:37:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:37:31,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 509 [2020-10-27 18:37:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:31,732 INFO L225 Difference]: With dead ends: 12367 [2020-10-27 18:37:31,733 INFO L226 Difference]: Without dead ends: 6178 [2020-10-27 18:37:31,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:37:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6178 states. [2020-10-27 18:37:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6178 to 6174. [2020-10-27 18:37:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-10-27 18:37:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 7312 transitions. [2020-10-27 18:37:31,884 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 7312 transitions. Word has length 509 [2020-10-27 18:37:31,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:31,885 INFO L481 AbstractCegarLoop]: Abstraction has 6174 states and 7312 transitions. [2020-10-27 18:37:31,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:37:31,885 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 7312 transitions. [2020-10-27 18:37:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-27 18:37:31,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:31,899 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:31,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:37:31,900 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:31,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:31,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1444945239, now seen corresponding path program 1 times [2020-10-27 18:37:31,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:31,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299116207] [2020-10-27 18:37:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:32,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:35,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:36,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:36,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-27 18:37:36,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:37:36,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 18:37:36,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 533 [2020-10-27 18:37:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 18:37:36,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:37,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:37,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:37,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:37,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:37,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:37,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:37:37,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:37,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:37,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:37,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:37,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:37:37,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:37:37,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:37:37,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:37:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:37,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:37,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:37,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:37:37,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:37:37,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:37:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:37,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:37,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-27 18:37:37,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:37,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 18:37:37,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-27 18:37:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:37:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:37,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:37,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 18:37:37,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:37,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:37:37,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 18:37:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-27 18:37:38,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299116207] [2020-10-27 18:37:38,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:38,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:37:38,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117429690] [2020-10-27 18:37:38,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:37:38,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:38,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:37:38,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:37:38,122 INFO L87 Difference]: Start difference. First operand 6174 states and 7312 transitions. Second operand 5 states. [2020-10-27 18:37:42,175 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 18:37:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:42,364 INFO L93 Difference]: Finished difference Result 12368 states and 14658 transitions. [2020-10-27 18:37:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:37:42,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 555 [2020-10-27 18:37:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:42,384 INFO L225 Difference]: With dead ends: 12368 [2020-10-27 18:37:42,384 INFO L226 Difference]: Without dead ends: 6178 [2020-10-27 18:37:42,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:37:42,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6178 states. [2020-10-27 18:37:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6178 to 6174. [2020-10-27 18:37:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-10-27 18:37:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 7310 transitions. [2020-10-27 18:37:42,546 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 7310 transitions. Word has length 555 [2020-10-27 18:37:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:42,547 INFO L481 AbstractCegarLoop]: Abstraction has 6174 states and 7310 transitions. [2020-10-27 18:37:42,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:37:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 7310 transitions. [2020-10-27 18:37:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-27 18:37:42,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:42,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:42,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:37:42,563 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:42,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:42,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1292569957, now seen corresponding path program 1 times [2020-10-27 18:37:42,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:42,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360042739] [2020-10-27 18:37:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:47,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:47,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-27 18:37:47,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:37:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 18:37:47,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:37:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-10-27 18:37:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 325 [2020-10-27 18:37:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:47,892 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:37:47,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:47,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:47,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:47,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:37:47,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:47,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:47,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:47,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:37:47,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:47,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:37:47,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:47,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:47,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:37:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:48,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:48,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:37:48,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 18:37:48,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:37:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:48,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 18:37:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:49,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:49,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 18:37:49,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:37:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-27 18:37:49,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:37:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 326 [2020-10-27 18:37:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:37:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:50,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:50,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 18:37:50,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 18:37:50,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:37:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 18:37:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 18:37:50,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360042739] [2020-10-27 18:37:50,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:50,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:37:50,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966371092] [2020-10-27 18:37:50,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:37:50,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:50,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:37:50,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:37:50,507 INFO L87 Difference]: Start difference. First operand 6174 states and 7310 transitions. Second operand 8 states. [2020-10-27 18:37:51,384 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:37:53,812 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 18:38:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:01,340 INFO L93 Difference]: Finished difference Result 13088 states and 15623 transitions. [2020-10-27 18:38:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:38:01,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 573 [2020-10-27 18:38:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:01,366 INFO L225 Difference]: With dead ends: 13088 [2020-10-27 18:38:01,366 INFO L226 Difference]: Without dead ends: 6920 [2020-10-27 18:38:01,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:38:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6920 states. [2020-10-27 18:38:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6920 to 5897. [2020-10-27 18:38:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5897 states. [2020-10-27 18:38:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 7020 transitions. [2020-10-27 18:38:01,517 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 7020 transitions. Word has length 573 [2020-10-27 18:38:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:01,517 INFO L481 AbstractCegarLoop]: Abstraction has 5897 states and 7020 transitions. [2020-10-27 18:38:01,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:38:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 7020 transitions. [2020-10-27 18:38:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-27 18:38:01,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:01,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:01,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:38:01,535 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:01,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1060485379, now seen corresponding path program 1 times [2020-10-27 18:38:01,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:01,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981911987] [2020-10-27 18:38:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 620 [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-27 18:38:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:06,994 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:38:06,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:38:07,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:07,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:07,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:07,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:38:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:07,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:07,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:07,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:38:07,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:38:07,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 18:38:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-27 18:38:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:11,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:11,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 18:38:11,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:38:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4210 [2020-10-27 18:38:11,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:38:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 326 [2020-10-27 18:38:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:38:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:11,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:11,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:11,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 18:38:11,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:11,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 18:38:11,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:38:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 18:38:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 18:38:12,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981911987] [2020-10-27 18:38:12,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:12,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:38:12,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189973215] [2020-10-27 18:38:12,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:38:12,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:12,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:38:12,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:38:12,007 INFO L87 Difference]: Start difference. First operand 5897 states and 7020 transitions. Second operand 8 states. [2020-10-27 18:38:13,194 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:38:16,745 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 18:38:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:26,044 INFO L93 Difference]: Finished difference Result 13185 states and 15895 transitions. [2020-10-27 18:38:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:38:26,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 602 [2020-10-27 18:38:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:26,068 INFO L225 Difference]: With dead ends: 13185 [2020-10-27 18:38:26,068 INFO L226 Difference]: Without dead ends: 7294 [2020-10-27 18:38:26,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:38:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2020-10-27 18:38:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 6265. [2020-10-27 18:38:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6265 states. [2020-10-27 18:38:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 7421 transitions. [2020-10-27 18:38:26,221 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 7421 transitions. Word has length 602 [2020-10-27 18:38:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:26,222 INFO L481 AbstractCegarLoop]: Abstraction has 6265 states and 7421 transitions. [2020-10-27 18:38:26,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:38:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 7421 transitions. [2020-10-27 18:38:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2020-10-27 18:38:26,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:26,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:38:26,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:38:26,240 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:26,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:26,241 INFO L82 PathProgramCache]: Analyzing trace with hash -558460713, now seen corresponding path program 1 times [2020-10-27 18:38:26,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:26,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672349817] [2020-10-27 18:38:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:27,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:29,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:31,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:31,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 738 [2020-10-27 18:38:31,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:38:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 18:38:31,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:38:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 374 [2020-10-27 18:38:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 325 [2020-10-27 18:38:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:31,607 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:38:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:31,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:31,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:31,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:38:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:31,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:31,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:38:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 18:38:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 18:38:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-27 18:38:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:31,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-27 18:38:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:32,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:32,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 18:38:32,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-27 18:38:32,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:38:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 326 [2020-10-27 18:38:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:38:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:32,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:32,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 18:38:32,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:38:32,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:38:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 18:38:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 442 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 18:38:33,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672349817] [2020-10-27 18:38:33,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:33,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:38:33,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022742210] [2020-10-27 18:38:33,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:38:33,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:33,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:38:33,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:38:33,236 INFO L87 Difference]: Start difference. First operand 6265 states and 7421 transitions. Second operand 7 states. [2020-10-27 18:38:34,008 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:38:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:41,474 INFO L93 Difference]: Finished difference Result 13929 states and 16482 transitions. [2020-10-27 18:38:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:38:41,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 720 [2020-10-27 18:38:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:41,500 INFO L225 Difference]: With dead ends: 13929 [2020-10-27 18:38:41,500 INFO L226 Difference]: Without dead ends: 6258 [2020-10-27 18:38:41,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:38:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2020-10-27 18:38:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 6228. [2020-10-27 18:38:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-10-27 18:38:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 6570 transitions. [2020-10-27 18:38:41,672 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 6570 transitions. Word has length 720 [2020-10-27 18:38:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:41,673 INFO L481 AbstractCegarLoop]: Abstraction has 6228 states and 6570 transitions. [2020-10-27 18:38:41,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:38:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 6570 transitions. [2020-10-27 18:38:41,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2020-10-27 18:38:41,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:41,694 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:41,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:38:41,694 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:41,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:41,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1990229200, now seen corresponding path program 1 times [2020-10-27 18:38:41,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:41,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094918924] [2020-10-27 18:38:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:42,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:46,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:46,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 946 [2020-10-27 18:38:46,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:38:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 18:38:46,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:38:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 582 [2020-10-27 18:38:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:38:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:47,296 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-27 18:38:47,416 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:38:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:47,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:47,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:47,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:47,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:38:47,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:47,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:47,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:47,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:38:47,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:38:47,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:47,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:38:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:47,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:47,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:38:47,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:38:47,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:47,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-27 18:38:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:47,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:47,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:38:47,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 18:38:47,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:38:47,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:48,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-27 18:38:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:53,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:53,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 18:38:53,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:38:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4816 [2020-10-27 18:38:53,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:38:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:38:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 326 [2020-10-27 18:38:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:54,056 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-27 18:38:54,567 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-27 18:38:55,168 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2020-10-27 18:38:55,740 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-27 18:38:56,362 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2020-10-27 18:38:56,953 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-10-27 18:38:57,129 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-10-27 18:38:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:38:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:57,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:57,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 18:38:57,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:57,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:38:57,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 18:38:57,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 677 proven. 2 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-27 18:39:04,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094918924] [2020-10-27 18:39:04,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:04,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:39:04,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330877689] [2020-10-27 18:39:04,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:39:04,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:39:04,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:39:04,407 INFO L87 Difference]: Start difference. First operand 6228 states and 6570 transitions. Second operand 13 states. [2020-10-27 18:39:04,831 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2020-10-27 18:39:06,271 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-27 18:39:07,033 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 95 [2020-10-27 18:39:08,819 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 99 [2020-10-27 18:39:09,511 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 98 [2020-10-27 18:39:10,595 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2020-10-27 18:39:11,271 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 98 [2020-10-27 18:39:11,995 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2020-10-27 18:39:12,773 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 115 [2020-10-27 18:39:14,823 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 61 [2020-10-27 18:39:15,060 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 18:39:15,590 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87