/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem06_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:47:42,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:47:42,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:47:42,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:47:42,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:47:42,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:47:42,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:47:42,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:47:42,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:47:42,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:47:42,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:47:42,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:47:42,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:47:42,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:47:42,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:47:42,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:47:42,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:47:42,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:47:42,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:47:42,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:47:42,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:47:42,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:47:42,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:47:42,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:47:42,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:47:42,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:47:42,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:47:42,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:47:42,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:47:42,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:47:42,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:47:42,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:47:42,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:47:42,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:47:42,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:47:42,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:47:42,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:47:42,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:47:42,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:47:42,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:47:42,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:47:42,370 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 [2020-10-29 05:47:42,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:47:42,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:47:42,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:47:42,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:47:42,429 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:47:42,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:47:42,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:47:42,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:47:42,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:47:42,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:47:42,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:47:42,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:47:42,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:47:42,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:47:42,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:47:42,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:47:42,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:47:42,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:47:42,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:47:42,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:47:42,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:47:42,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:47:42,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:47:42,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:47:42,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:47:42,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:47:42,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:47:42,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:47:42,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:47:42,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:47:42,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:47:42,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:47:42,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:47:42,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:47:42,910 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:47:42,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label50.c [2020-10-29 05:47:43,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc6b2b8ea/458db4a532824ff7be678960fd241f94/FLAGfbda96a7a [2020-10-29 05:47:44,169 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:47:44,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label50.c [2020-10-29 05:47:44,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc6b2b8ea/458db4a532824ff7be678960fd241f94/FLAGfbda96a7a [2020-10-29 05:47:44,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc6b2b8ea/458db4a532824ff7be678960fd241f94 [2020-10-29 05:47:44,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:47:44,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:47:44,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:47:44,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:47:44,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:47:44,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:44" (1/1) ... [2020-10-29 05:47:44,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb8dd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:44, skipping insertion in model container [2020-10-29 05:47:44,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:44" (1/1) ... [2020-10-29 05:47:44,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:47:44,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:47:46,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:47:46,980 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:47:48,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:47:48,299 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:47:48,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48 WrapperNode [2020-10-29 05:47:48,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:47:48,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:47:48,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:47:48,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:47:48,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (1/1) ... [2020-10-29 05:47:48,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (1/1) ... [2020-10-29 05:47:48,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (1/1) ... [2020-10-29 05:47:48,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (1/1) ... [2020-10-29 05:47:48,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (1/1) ... [2020-10-29 05:47:48,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (1/1) ... [2020-10-29 05:47:48,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (1/1) ... [2020-10-29 05:47:48,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:47:48,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:47:48,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:47:48,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:47:48,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (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 [2020-10-29 05:47:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:47:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:47:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:47:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:47:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:47:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:47:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:47:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:47:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:47:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:47:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:47:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:47:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:47:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:47:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:47:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:47:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:47:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:47:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:47:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:47:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:47:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:47:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:47:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:47:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:47:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:47:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:47:56,762 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:47:56,763 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:47:56,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:56 BoogieIcfgContainer [2020-10-29 05:47:56,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:47:56,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:47:56,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:47:56,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:47:56,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:47:44" (1/3) ... [2020-10-29 05:47:56,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a48560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:56, skipping insertion in model container [2020-10-29 05:47:56,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:48" (2/3) ... [2020-10-29 05:47:56,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a48560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:56, skipping insertion in model container [2020-10-29 05:47:56,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:56" (3/3) ... [2020-10-29 05:47:56,776 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label50.c [2020-10-29 05:47:56,788 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:47:56,795 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:47:56,809 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:47:56,849 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:47:56,849 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:47:56,849 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:47:56,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:47:56,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:47:56,849 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:47:56,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:47:56,850 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:47:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:47:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-29 05:47:56,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:56,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:47:56,967 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:56,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:56,974 INFO L82 PathProgramCache]: Analyzing trace with hash 824050276, now seen corresponding path program 1 times [2020-10-29 05:47:56,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:56,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390850848] [2020-10-29 05:47:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:01,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:03,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:03,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1009 [2020-10-29 05:48:03,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:48:03,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-29 05:48:03,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:03,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:48:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:48:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1000 [2020-10-29 05:48:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:48:04,813 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:48:04,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:48:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:04,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:04,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:48:04,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:48:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:48:04,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:04,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:48:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:48:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:48:04,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:48:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:48:06,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390850848] [2020-10-29 05:48:06,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:48:06,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:48:06,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046539248] [2020-10-29 05:48:06,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:48:06,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:48:06,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:48:06,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:48:06,624 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:48:06,864 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:48:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:48:24,517 INFO L93 Difference]: Finished difference Result 3750 states and 6993 transitions. [2020-10-29 05:48:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:48:24,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 991 [2020-10-29 05:48:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:48:24,583 INFO L225 Difference]: With dead ends: 3750 [2020-10-29 05:48:24,583 INFO L226 Difference]: Without dead ends: 2367 [2020-10-29 05:48:24,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:48:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2020-10-29 05:48:24,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2346. [2020-10-29 05:48:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2020-10-29 05:48:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3865 transitions. [2020-10-29 05:48:24,820 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3865 transitions. Word has length 991 [2020-10-29 05:48:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:48:24,824 INFO L481 AbstractCegarLoop]: Abstraction has 2346 states and 3865 transitions. [2020-10-29 05:48:24,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:48:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3865 transitions. [2020-10-29 05:48:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-29 05:48:24,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:48:24,872 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:48:24,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:48:24,873 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:48:24,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:48:24,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1467654773, now seen corresponding path program 1 times [2020-10-29 05:48:24,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:48:24,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612324687] [2020-10-29 05:48:24,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:48:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:30,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:30,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1023 [2020-10-29 05:48:30,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:48:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-29 05:48:30,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:30,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:48:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:48:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 997 [2020-10-29 05:48:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:48:31,976 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:48:31,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:48:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:31,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:31,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:48:31,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:48:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:48:31,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:31,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:48:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:48:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:48:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:48:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:48:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:32,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:48:32,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:48:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:48:32,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:32,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:48:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:48:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:48:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:48:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:48:33,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612324687] [2020-10-29 05:48:33,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:48:33,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:48:33,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570863569] [2020-10-29 05:48:33,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:48:33,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:48:33,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:48:33,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:48:33,462 INFO L87 Difference]: Start difference. First operand 2346 states and 3865 transitions. Second operand 6 states. [2020-10-29 05:48:33,850 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:48:34,169 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:49:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:49:02,775 INFO L93 Difference]: Finished difference Result 8939 states and 15030 transitions. [2020-10-29 05:49:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:49:02,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1003 [2020-10-29 05:49:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:49:02,819 INFO L225 Difference]: With dead ends: 8939 [2020-10-29 05:49:02,819 INFO L226 Difference]: Without dead ends: 6599 [2020-10-29 05:49:02,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:49:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2020-10-29 05:49:03,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 6505. [2020-10-29 05:49:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2020-10-29 05:49:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 10140 transitions. [2020-10-29 05:49:03,027 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 10140 transitions. Word has length 1003 [2020-10-29 05:49:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:49:03,029 INFO L481 AbstractCegarLoop]: Abstraction has 6505 states and 10140 transitions. [2020-10-29 05:49:03,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:49:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 10140 transitions. [2020-10-29 05:49:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2020-10-29 05:49:03,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:49:03,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:49:03,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:49:03,059 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:49:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:49:03,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1772621510, now seen corresponding path program 1 times [2020-10-29 05:49:03,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:49:03,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182010715] [2020-10-29 05:49:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:49:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:08,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:08,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-29 05:49:08,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:49:08,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-29 05:49:08,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:08,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:49:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 05:49:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 05:49:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:08,877 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:49:08,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:49:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:08,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:08,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:49:08,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:49:08,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:08,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:49:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:49:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:49:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:09,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:49:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:09,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:09,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:49:09,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:49:09,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:09,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:49:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:49:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:49:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:49:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:09,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:09,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:49:09,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:49:09,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:09,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:49:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:49:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:49:09,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:09,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:49:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:09,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:09,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:49:09,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:49:09,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:09,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:49:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:49:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:49:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:09,895 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 05:49:09,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182010715] [2020-10-29 05:49:09,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:49:09,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:49:09,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846451325] [2020-10-29 05:49:09,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:49:09,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:49:09,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:49:09,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:49:09,899 INFO L87 Difference]: Start difference. First operand 6505 states and 10140 transitions. Second operand 7 states. [2020-10-29 05:49:10,178 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:49:11,483 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:49:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:49:32,131 INFO L93 Difference]: Finished difference Result 19459 states and 31177 transitions. [2020-10-29 05:49:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:49:32,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1022 [2020-10-29 05:49:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:49:32,203 INFO L225 Difference]: With dead ends: 19459 [2020-10-29 05:49:32,203 INFO L226 Difference]: Without dead ends: 12960 [2020-10-29 05:49:32,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:49:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12960 states. [2020-10-29 05:49:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12960 to 12876. [2020-10-29 05:49:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12876 states. [2020-10-29 05:49:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12876 states to 12876 states and 19412 transitions. [2020-10-29 05:49:32,650 INFO L78 Accepts]: Start accepts. Automaton has 12876 states and 19412 transitions. Word has length 1022 [2020-10-29 05:49:32,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:49:32,651 INFO L481 AbstractCegarLoop]: Abstraction has 12876 states and 19412 transitions. [2020-10-29 05:49:32,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:49:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12876 states and 19412 transitions. [2020-10-29 05:49:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2020-10-29 05:49:32,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:49:32,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:49:32,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:49:32,902 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:49:32,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:49:32,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1345414677, now seen corresponding path program 1 times [2020-10-29 05:49:32,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:49:32,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870940317] [2020-10-29 05:49:32,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:49:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:38,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-29 05:49:38,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:49:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5201 [2020-10-29 05:49:38,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:38,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:49:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 05:49:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 997 [2020-10-29 05:49:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:39,089 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:49:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:49:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:39,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:39,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:49:39,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:49:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:39,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:49:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:49:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:49:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:39,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:49:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:39,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:39,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:49:39,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:39,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 05:49:39,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:39,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:49:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:49:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:49:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:49:40,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870940317] [2020-10-29 05:49:40,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:49:40,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:49:40,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957593386] [2020-10-29 05:49:40,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:49:40,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:49:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:49:40,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:49:40,625 INFO L87 Difference]: Start difference. First operand 12876 states and 19412 transitions. Second operand 5 states. [2020-10-29 05:49:41,071 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:50:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:50:01,453 INFO L93 Difference]: Finished difference Result 38240 states and 60042 transitions. [2020-10-29 05:50:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:50:01,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1053 [2020-10-29 05:50:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:50:01,562 INFO L225 Difference]: With dead ends: 38240 [2020-10-29 05:50:01,562 INFO L226 Difference]: Without dead ends: 25370 [2020-10-29 05:50:01,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:50:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25370 states. [2020-10-29 05:50:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25370 to 25350. [2020-10-29 05:50:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25350 states. [2020-10-29 05:50:02,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25350 states to 25350 states and 38011 transitions. [2020-10-29 05:50:02,403 INFO L78 Accepts]: Start accepts. Automaton has 25350 states and 38011 transitions. Word has length 1053 [2020-10-29 05:50:02,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:50:02,406 INFO L481 AbstractCegarLoop]: Abstraction has 25350 states and 38011 transitions. [2020-10-29 05:50:02,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:50:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 25350 states and 38011 transitions. [2020-10-29 05:50:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2020-10-29 05:50:02,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:50:02,525 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:50:02,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:50:02,525 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:50:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:50:02,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1905424265, now seen corresponding path program 1 times [2020-10-29 05:50:02,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:50:02,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098379159] [2020-10-29 05:50:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:50:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:02,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:07,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:07,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1094 [2020-10-29 05:50:07,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:50:07,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-29 05:50:07,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:07,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:50:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 05:50:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 05:50:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:50:08,365 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:50:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:50:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:08,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:08,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:50:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:50:08,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:08,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:50:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:50:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:50:08,512 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:50:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:50:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:08,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:08,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:50:08,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:08,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:50:08,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:08,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:50:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:50:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:08,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 05:50:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:08,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:08,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 05:50:08,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 05:50:08,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:08,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:50:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:50:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 05:50:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:50:09,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098379159] [2020-10-29 05:50:09,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:50:09,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:50:09,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328085094] [2020-10-29 05:50:09,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:50:09,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:50:09,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:50:09,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:50:09,663 INFO L87 Difference]: Start difference. First operand 25350 states and 38011 transitions. Second operand 7 states. [2020-10-29 05:50:09,927 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:50:10,811 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:50:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:50:29,947 INFO L93 Difference]: Finished difference Result 76628 states and 123971 transitions. [2020-10-29 05:50:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:50:29,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1072 [2020-10-29 05:50:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:50:30,221 INFO L225 Difference]: With dead ends: 76628 [2020-10-29 05:50:30,221 INFO L226 Difference]: Without dead ends: 51284 [2020-10-29 05:50:30,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:50:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51284 states. [2020-10-29 05:50:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51284 to 51232. [2020-10-29 05:50:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51232 states. [2020-10-29 05:50:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51232 states to 51232 states and 79165 transitions. [2020-10-29 05:50:32,100 INFO L78 Accepts]: Start accepts. Automaton has 51232 states and 79165 transitions. Word has length 1072 [2020-10-29 05:50:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:50:32,100 INFO L481 AbstractCegarLoop]: Abstraction has 51232 states and 79165 transitions. [2020-10-29 05:50:32,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:50:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 51232 states and 79165 transitions. [2020-10-29 05:50:32,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-29 05:50:32,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:50:32,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:50:32,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:50:32,277 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:50:32,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:50:32,279 INFO L82 PathProgramCache]: Analyzing trace with hash 262630555, now seen corresponding path program 1 times [2020-10-29 05:50:32,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:50:32,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418827783] [2020-10-29 05:50:32,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:50:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:32,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1097 [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5184 [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 997 [2020-10-29 05:50:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:38,654 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:50:38,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:50:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:38,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:50:38,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:50:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:38,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:50:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:50:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:38,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:50:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:38,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:38,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 05:50:38,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 05:50:38,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:38,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:50:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:50:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:50:39,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418827783] [2020-10-29 05:50:39,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:50:39,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:50:39,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690111331] [2020-10-29 05:50:39,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:50:39,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:50:39,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:50:39,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:50:39,912 INFO L87 Difference]: Start difference. First operand 51232 states and 79165 transitions. Second operand 5 states. [2020-10-29 05:50:40,283 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:50:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:50:59,473 INFO L93 Difference]: Finished difference Result 127518 states and 208872 transitions. [2020-10-29 05:50:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:50:59,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1077 [2020-10-29 05:50:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:50:59,879 INFO L225 Difference]: With dead ends: 127518 [2020-10-29 05:50:59,879 INFO L226 Difference]: Without dead ends: 76292 [2020-10-29 05:50:59,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:51:00,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76292 states. [2020-10-29 05:51:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76292 to 76262. [2020-10-29 05:51:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76262 states. [2020-10-29 05:51:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76262 states to 76262 states and 119505 transitions. [2020-10-29 05:51:02,959 INFO L78 Accepts]: Start accepts. Automaton has 76262 states and 119505 transitions. Word has length 1077 [2020-10-29 05:51:02,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:51:02,963 INFO L481 AbstractCegarLoop]: Abstraction has 76262 states and 119505 transitions. [2020-10-29 05:51:02,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:51:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 76262 states and 119505 transitions. [2020-10-29 05:51:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-10-29 05:51:03,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:51:03,488 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:51:03,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:51:03,489 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:51:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:51:03,490 INFO L82 PathProgramCache]: Analyzing trace with hash -632539156, now seen corresponding path program 1 times [2020-10-29 05:51:03,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:51:03,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144695651] [2020-10-29 05:51:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:51:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:51:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:51:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:51:08,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:51:08,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-29 05:51:08,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:51:08,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-29 05:51:08,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:51:08,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:51:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:51:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 05:51:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 05:51:08,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:51:09,389 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:51:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:51:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:51:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:51:09,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:51:09,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:51:09,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:51:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:51:09,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:51:09,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:51:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:51:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:51:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:51:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:51:09,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:51:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:51:09,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:51:09,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:51:09,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:51:09,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:51:09,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:51:09,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:51:09,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:51:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:51:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:51:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:51:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:51:09,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 05:51:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:51:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:51:09,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:51:09,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 05:51:09,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:51:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 05:51:09,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:51:09,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:51:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:51:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:51:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 05:51:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:51:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:51:10,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144695651] [2020-10-29 05:51:10,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:51:10,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:51:10,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661424988] [2020-10-29 05:51:10,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:51:10,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:51:10,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:51:10,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:51:10,588 INFO L87 Difference]: Start difference. First operand 76262 states and 119505 transitions. Second operand 8 states. [2020-10-29 05:51:10,855 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:51:11,228 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:51:13,723 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159