/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:30:18,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:30:18,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:30:18,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:30:18,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:30:18,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:30:18,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:30:18,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:30:18,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:30:18,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:30:18,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:30:18,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:30:18,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:30:18,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:30:18,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:30:18,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:30:18,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:30:18,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:30:18,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:30:18,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:30:18,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:30:18,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:30:18,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:30:18,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:30:18,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:30:18,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:30:18,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:30:18,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:30:18,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:30:18,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:30:18,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:30:18,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:30:18,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:30:18,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:30:19,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:30:19,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:30:19,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:30:19,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:30:19,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:30:19,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:30:19,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:30:19,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:30:19,069 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:30:19,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:30:19,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:30:19,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:30:19,071 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:30:19,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:30:19,072 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:30:19,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:30:19,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:30:19,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:30:19,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:30:19,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:30:19,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:30:19,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:30:19,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:30:19,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:30:19,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:30:19,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:30:19,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:30:19,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:30:19,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:30:19,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:30:19,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:30:19,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:30:19,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:30:19,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:30:19,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:30:19,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:30:19,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:30:19,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:30:19,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:30:19,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:30:19,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:30:19,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:30:19,545 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:30:19,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36.c [2020-10-27 00:30:19,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f78eb6cb0/65e58a0987074b3ca5de5f979cab6e68/FLAG8451e8e15 [2020-10-27 00:30:20,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:30:20,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label36.c [2020-10-27 00:30:20,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f78eb6cb0/65e58a0987074b3ca5de5f979cab6e68/FLAG8451e8e15 [2020-10-27 00:30:21,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f78eb6cb0/65e58a0987074b3ca5de5f979cab6e68 [2020-10-27 00:30:21,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:30:21,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:30:21,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:30:21,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:30:21,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:30:21,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:30:21" (1/1) ... [2020-10-27 00:30:21,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbb9511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:21, skipping insertion in model container [2020-10-27 00:30:21,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:30:21" (1/1) ... [2020-10-27 00:30:21,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:30:21,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:30:22,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:30:22,369 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:30:22,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:30:22,964 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:30:22,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22 WrapperNode [2020-10-27 00:30:22,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:30:22,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:30:22,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:30:22,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:30:22,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (1/1) ... [2020-10-27 00:30:22,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (1/1) ... [2020-10-27 00:30:23,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (1/1) ... [2020-10-27 00:30:23,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (1/1) ... [2020-10-27 00:30:23,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (1/1) ... [2020-10-27 00:30:23,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (1/1) ... [2020-10-27 00:30:23,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (1/1) ... [2020-10-27 00:30:23,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:30:23,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:30:23,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:30:23,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:30:23,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:30:23,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:30:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:30:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:30:23,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:30:23,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:30:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:30:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:30:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:30:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:30:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:30:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:30:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:30:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:30:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:30:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:30:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:30:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:30:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:30:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:30:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:30:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:30:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:30:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:30:27,697 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:30:27,697 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:30:27,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:30:27 BoogieIcfgContainer [2020-10-27 00:30:27,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:30:27,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:30:27,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:30:27,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:30:27,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:30:21" (1/3) ... [2020-10-27 00:30:27,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e255e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:30:27, skipping insertion in model container [2020-10-27 00:30:27,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:22" (2/3) ... [2020-10-27 00:30:27,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e255e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:30:27, skipping insertion in model container [2020-10-27 00:30:27,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:30:27" (3/3) ... [2020-10-27 00:30:27,714 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label36.c [2020-10-27 00:30:27,730 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:30:27,737 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:30:27,751 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:30:27,799 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:30:27,799 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:30:27,799 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:30:27,799 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:30:27,799 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:30:27,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:30:27,799 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:30:27,800 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:30:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:30:27,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 00:30:27,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:27,845 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] [2020-10-27 00:30:27,845 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:27,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:27,851 INFO L82 PathProgramCache]: Analyzing trace with hash 727371536, now seen corresponding path program 1 times [2020-10-27 00:30:27,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:27,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685927613] [2020-10-27 00:30:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:28,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:28,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 00:30:28,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:28,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-27 00:30:28,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 00:30:28,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:28,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:28,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:28,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:28,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:30:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:28,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685927613] [2020-10-27 00:30:28,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:28,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:30:28,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032554812] [2020-10-27 00:30:28,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:30:28,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:28,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:30:28,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:30:28,886 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:30:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:43,545 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-27 00:30:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:30:43,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 00:30:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:43,586 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:30:43,587 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:30:43,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:43,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:30:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:30:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:30:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3228 transitions. [2020-10-27 00:30:43,823 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3228 transitions. Word has length 34 [2020-10-27 00:30:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:43,824 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3228 transitions. [2020-10-27 00:30:43,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:30:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3228 transitions. [2020-10-27 00:30:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 00:30:43,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:43,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:43,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:30:43,836 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1952122344, now seen corresponding path program 1 times [2020-10-27 00:30:43,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:43,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336817516] [2020-10-27 00:30:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:44,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:44,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:30:44,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-10-27 00:30:44,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:30:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:44,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:44,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:44,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:30:44,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:44,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:45,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:45,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:30:45,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 00:30:45,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:30:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:45,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336817516] [2020-10-27 00:30:45,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:45,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:45,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614540797] [2020-10-27 00:30:45,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:45,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:45,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:45,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:45,221 INFO L87 Difference]: Start difference. First operand 2136 states and 3228 transitions. Second operand 7 states. [2020-10-27 00:30:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:57,114 INFO L93 Difference]: Finished difference Result 6501 states and 9924 transitions. [2020-10-27 00:30:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:57,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-27 00:30:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:57,151 INFO L225 Difference]: With dead ends: 6501 [2020-10-27 00:30:57,151 INFO L226 Difference]: Without dead ends: 4371 [2020-10-27 00:30:57,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:57,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2020-10-27 00:30:57,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 4306. [2020-10-27 00:30:57,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4306 states. [2020-10-27 00:30:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 5737 transitions. [2020-10-27 00:30:57,349 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 5737 transitions. Word has length 104 [2020-10-27 00:30:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:57,350 INFO L481 AbstractCegarLoop]: Abstraction has 4306 states and 5737 transitions. [2020-10-27 00:30:57,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 5737 transitions. [2020-10-27 00:30:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 00:30:57,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:57,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:57,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:30:57,356 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:57,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1806253738, now seen corresponding path program 1 times [2020-10-27 00:30:57,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:57,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635569201] [2020-10-27 00:30:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:58,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:58,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:30:58,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-27 00:30:58,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:30:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:58,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:58,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:58,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:58,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:30:58,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:59,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:30:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 00:30:59,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:30:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:59,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635569201] [2020-10-27 00:30:59,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:59,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:59,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616544824] [2020-10-27 00:30:59,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:59,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:59,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:59,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:59,429 INFO L87 Difference]: Start difference. First operand 4306 states and 5737 transitions. Second operand 7 states. [2020-10-27 00:31:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:12,195 INFO L93 Difference]: Finished difference Result 11728 states and 16256 transitions. [2020-10-27 00:31:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:31:12,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-27 00:31:12,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:12,241 INFO L225 Difference]: With dead ends: 11728 [2020-10-27 00:31:12,242 INFO L226 Difference]: Without dead ends: 7428 [2020-10-27 00:31:12,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:31:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2020-10-27 00:31:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 6570. [2020-10-27 00:31:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6570 states. [2020-10-27 00:31:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 8322 transitions. [2020-10-27 00:31:12,488 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 8322 transitions. Word has length 131 [2020-10-27 00:31:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:12,488 INFO L481 AbstractCegarLoop]: Abstraction has 6570 states and 8322 transitions. [2020-10-27 00:31:12,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 8322 transitions. [2020-10-27 00:31:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 00:31:12,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:12,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:12,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:31:12,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:12,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1749612880, now seen corresponding path program 1 times [2020-10-27 00:31:12,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:12,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660106603] [2020-10-27 00:31:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:13,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:13,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 00:31:13,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:13,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1238 [2020-10-27 00:31:13,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:31:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-10-27 00:31:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 00:31:13,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:13,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:13,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:13,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:31:13,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:13,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:14,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:31:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-27 00:31:14,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:31:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 00:31:14,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660106603] [2020-10-27 00:31:14,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:14,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:31:14,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095396952] [2020-10-27 00:31:14,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:31:14,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:14,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:31:14,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:31:14,453 INFO L87 Difference]: Start difference. First operand 6570 states and 8322 transitions. Second operand 6 states. [2020-10-27 00:31:24,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:24,461 INFO L93 Difference]: Finished difference Result 15362 states and 19155 transitions. [2020-10-27 00:31:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:31:24,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2020-10-27 00:31:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:24,514 INFO L225 Difference]: With dead ends: 15362 [2020-10-27 00:31:24,514 INFO L226 Difference]: Without dead ends: 8798 [2020-10-27 00:31:24,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:31:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8798 states. [2020-10-27 00:31:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8798 to 8717. [2020-10-27 00:31:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8717 states. [2020-10-27 00:31:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 10571 transitions. [2020-10-27 00:31:24,778 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 10571 transitions. Word has length 220 [2020-10-27 00:31:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:24,780 INFO L481 AbstractCegarLoop]: Abstraction has 8717 states and 10571 transitions. [2020-10-27 00:31:24,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:31:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 10571 transitions. [2020-10-27 00:31:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 00:31:24,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:24,790 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:31:24,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:31:24,791 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:24,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:24,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1436222026, now seen corresponding path program 1 times [2020-10-27 00:31:24,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:24,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279103491] [2020-10-27 00:31:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:24,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 00:31:26,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2012 [2020-10-27 00:31:26,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:31:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:31:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:27,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:27,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:31:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:31:27,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:31:27,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:31:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:31:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 00:31:27,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:31:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:31:28,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279103491] [2020-10-27 00:31:28,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:28,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:28,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968870063] [2020-10-27 00:31:28,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:28,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:28,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:28,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:28,245 INFO L87 Difference]: Start difference. First operand 8717 states and 10571 transitions. Second operand 7 states. [2020-10-27 00:31:40,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:40,774 INFO L93 Difference]: Finished difference Result 15615 states and 19369 transitions. [2020-10-27 00:31:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:31:40,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-27 00:31:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:40,820 INFO L225 Difference]: With dead ends: 15615 [2020-10-27 00:31:40,821 INFO L226 Difference]: Without dead ends: 7420 [2020-10-27 00:31:40,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2020-10-27 00:31:41,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 7312. [2020-10-27 00:31:41,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7312 states. [2020-10-27 00:31:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7312 states to 7312 states and 8313 transitions. [2020-10-27 00:31:41,043 INFO L78 Accepts]: Start accepts. Automaton has 7312 states and 8313 transitions. Word has length 317 [2020-10-27 00:31:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:41,044 INFO L481 AbstractCegarLoop]: Abstraction has 7312 states and 8313 transitions. [2020-10-27 00:31:41,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7312 states and 8313 transitions. [2020-10-27 00:31:41,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-27 00:31:41,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:41,054 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:31:41,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:31:41,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:41,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash 829724358, now seen corresponding path program 1 times [2020-10-27 00:31:41,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:41,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207227549] [2020-10-27 00:31:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:42,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:46,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:46,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-27 00:31:46,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:46,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 00:31:46,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:31:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:31:46,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:46,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:46,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:46,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:31:46,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:46,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:47,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:47,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-27 00:31:47,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:31:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:47,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:47,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:47,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:31:47,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:31:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:31:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:31:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:47,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:47,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:31:47,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:31:47,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:31:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 52 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:31:48,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207227549] [2020-10-27 00:31:48,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:48,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:31:48,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878515905] [2020-10-27 00:31:48,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:31:48,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:48,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:31:48,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:31:48,271 INFO L87 Difference]: Start difference. First operand 7312 states and 8313 transitions. Second operand 8 states. [2020-10-27 00:32:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:01,701 INFO L93 Difference]: Finished difference Result 20658 states and 24186 transitions. [2020-10-27 00:32:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:32:01,703 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 438 [2020-10-27 00:32:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:01,749 INFO L225 Difference]: With dead ends: 20658 [2020-10-27 00:32:01,750 INFO L226 Difference]: Without dead ends: 14054 [2020-10-27 00:32:01,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:32:01,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2020-10-27 00:32:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 13262. [2020-10-27 00:32:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13262 states. [2020-10-27 00:32:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13262 states to 13262 states and 15169 transitions. [2020-10-27 00:32:02,079 INFO L78 Accepts]: Start accepts. Automaton has 13262 states and 15169 transitions. Word has length 438 [2020-10-27 00:32:02,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:02,080 INFO L481 AbstractCegarLoop]: Abstraction has 13262 states and 15169 transitions. [2020-10-27 00:32:02,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:32:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13262 states and 15169 transitions. [2020-10-27 00:32:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-27 00:32:02,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:02,119 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:32:02,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:32:02,122 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:02,123 INFO L82 PathProgramCache]: Analyzing trace with hash 540292514, now seen corresponding path program 1 times [2020-10-27 00:32:02,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:02,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920306623] [2020-10-27 00:32:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:02,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-27 00:32:06,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:06,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4587 [2020-10-27 00:32:06,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:32:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:32:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:07,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:07,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:07,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:07,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:32:07,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:07,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:07,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:07,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:07,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 00:32:07,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:32:07,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:07,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 00:32:07,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:32:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:07,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:07,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:07,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:07,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:32:07,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:07,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:32:08,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:08,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:08,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 00:32:08,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:32:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:08,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:08,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:08,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:08,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:32:08,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:32:08,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:08,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:09,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:09,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:09,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 00:32:09,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:32:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:32:10,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920306623] [2020-10-27 00:32:10,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:10,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:10,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676314973] [2020-10-27 00:32:10,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:10,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:10,464 INFO L87 Difference]: Start difference. First operand 13262 states and 15169 transitions. Second operand 7 states. [2020-10-27 00:32:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:22,166 INFO L93 Difference]: Finished difference Result 31781 states and 37470 transitions. [2020-10-27 00:32:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:32:22,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 990 [2020-10-27 00:32:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:22,246 INFO L225 Difference]: With dead ends: 31781 [2020-10-27 00:32:22,246 INFO L226 Difference]: Without dead ends: 19937 [2020-10-27 00:32:22,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:32:22,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19937 states. [2020-10-27 00:32:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19937 to 19863. [2020-10-27 00:32:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19863 states. [2020-10-27 00:32:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19863 states to 19863 states and 22771 transitions. [2020-10-27 00:32:22,716 INFO L78 Accepts]: Start accepts. Automaton has 19863 states and 22771 transitions. Word has length 990 [2020-10-27 00:32:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:22,718 INFO L481 AbstractCegarLoop]: Abstraction has 19863 states and 22771 transitions. [2020-10-27 00:32:22,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19863 states and 22771 transitions. [2020-10-27 00:32:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-27 00:32:22,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:22,772 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:32:22,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:32:22,772 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:22,773 INFO L82 PathProgramCache]: Analyzing trace with hash -435051009, now seen corresponding path program 1 times [2020-10-27 00:32:22,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:22,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509189245] [2020-10-27 00:32:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:28,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:28,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1019 [2020-10-27 00:32:28,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 00:32:28,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:32:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:32:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:28,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:28,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:28,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:32:28,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:28,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:28,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:28,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:28,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:32:28,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:29,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:29,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:29,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:29,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 00:32:29,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:29,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:29,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:29,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:32:29,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:29,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:29,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:32:29,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 00:32:29,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:32:29,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:29,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:29,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:29,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:29,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:32:29,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:32:29,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:32:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:32:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:30,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:30,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:30,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 00:32:30,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-27 00:32:31,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509189245] [2020-10-27 00:32:31,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:31,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:31,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075344638] [2020-10-27 00:32:31,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:31,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:31,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:31,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:31,154 INFO L87 Difference]: Start difference. First operand 19863 states and 22771 transitions. Second operand 7 states. [2020-10-27 00:32:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:40,053 INFO L93 Difference]: Finished difference Result 39837 states and 45897 transitions. [2020-10-27 00:32:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:32:40,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 997 [2020-10-27 00:32:40,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:40,126 INFO L225 Difference]: With dead ends: 39837 [2020-10-27 00:32:40,126 INFO L226 Difference]: Without dead ends: 21392 [2020-10-27 00:32:40,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21392 states. [2020-10-27 00:32:40,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21392 to 21326. [2020-10-27 00:32:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21326 states. [2020-10-27 00:32:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21326 states to 21326 states and 24420 transitions. [2020-10-27 00:32:40,620 INFO L78 Accepts]: Start accepts. Automaton has 21326 states and 24420 transitions. Word has length 997 [2020-10-27 00:32:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:40,623 INFO L481 AbstractCegarLoop]: Abstraction has 21326 states and 24420 transitions. [2020-10-27 00:32:40,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 21326 states and 24420 transitions. [2020-10-27 00:32:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-27 00:32:40,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:40,642 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:32:40,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:32:40,642 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash 889793492, now seen corresponding path program 1 times [2020-10-27 00:32:40,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:40,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404838693] [2020-10-27 00:32:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:41,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1071 [2020-10-27 00:32:46,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 00:32:46,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:32:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:32:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:46,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:46,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:46,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:46,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:46,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-27 00:32:46,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:46,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:46,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:32:46,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:46,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:46,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:46,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:46,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:46,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:47,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 00:32:47,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:32:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:47,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:47,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:32:47,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:32:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:32:47,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:32:47,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:32:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:32:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:32:47,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:32:47,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:47,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:32:47,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 294 proven. 88 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2020-10-27 00:32:48,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404838693] [2020-10-27 00:32:48,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:48,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:48,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871514829] [2020-10-27 00:32:48,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:48,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:48,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:48,312 INFO L87 Difference]: Start difference. First operand 21326 states and 24420 transitions. Second operand 7 states. [2020-10-27 00:32:58,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:58,761 INFO L93 Difference]: Finished difference Result 52775 states and 62185 transitions. [2020-10-27 00:32:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:32:58,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1047 [2020-10-27 00:32:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:58,864 INFO L225 Difference]: With dead ends: 52775 [2020-10-27 00:32:58,864 INFO L226 Difference]: Without dead ends: 32867 [2020-10-27 00:32:58,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32867 states. [2020-10-27 00:32:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32867 to 31372. [2020-10-27 00:32:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31372 states. [2020-10-27 00:32:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31372 states to 31372 states and 36038 transitions. [2020-10-27 00:32:59,497 INFO L78 Accepts]: Start accepts. Automaton has 31372 states and 36038 transitions. Word has length 1047 [2020-10-27 00:32:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:59,498 INFO L481 AbstractCegarLoop]: Abstraction has 31372 states and 36038 transitions. [2020-10-27 00:32:59,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 31372 states and 36038 transitions. [2020-10-27 00:32:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2020-10-27 00:32:59,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:59,521 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:32:59,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:32:59,522 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:59,523 INFO L82 PathProgramCache]: Analyzing trace with hash 69278814, now seen corresponding path program 1 times [2020-10-27 00:32:59,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:59,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005768445] [2020-10-27 00:32:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:03,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:04,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1240 [2020-10-27 00:33:04,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:33:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 00:33:04,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:33:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:33:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:05,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:05,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:05,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:33:05,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:05,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:33:05,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:33:05,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:05,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:33:05,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:05,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:33:05,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:33:05,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:33:05,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:33:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:33:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:33:06,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:33:06,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:33:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:06,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:33:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 00:33:06,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:33:06,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 00:33:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 509 proven. 80 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2020-10-27 00:33:07,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005768445] [2020-10-27 00:33:07,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:07,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:33:07,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129717900] [2020-10-27 00:33:07,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:33:07,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:07,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:33:07,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:33:07,631 INFO L87 Difference]: Start difference. First operand 31372 states and 36038 transitions. Second operand 8 states. [2020-10-27 00:33:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:28,862 INFO L93 Difference]: Finished difference Result 75646 states and 89140 transitions. [2020-10-27 00:33:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 00:33:28,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1214 [2020-10-27 00:33:28,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:28,985 INFO L225 Difference]: With dead ends: 75646 [2020-10-27 00:33:28,985 INFO L226 Difference]: Without dead ends: 44982 [2020-10-27 00:33:29,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-27 00:33:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44982 states. [2020-10-27 00:33:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44982 to 41390. [2020-10-27 00:33:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41390 states. [2020-10-27 00:33:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41390 states to 41390 states and 47827 transitions. [2020-10-27 00:33:29,841 INFO L78 Accepts]: Start accepts. Automaton has 41390 states and 47827 transitions. Word has length 1214 [2020-10-27 00:33:29,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:29,842 INFO L481 AbstractCegarLoop]: Abstraction has 41390 states and 47827 transitions. [2020-10-27 00:33:29,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:33:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand 41390 states and 47827 transitions. [2020-10-27 00:33:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1276 [2020-10-27 00:33:29,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:29,866 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:33:29,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:33:29,867 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:29,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1591537920, now seen corresponding path program 1 times [2020-10-27 00:33:29,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:29,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512542588] [2020-10-27 00:33:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:35,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:35,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1303 [2020-10-27 00:33:35,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:33:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 00:33:35,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:33:35,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:33:35,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:35,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:35,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:35,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:35,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:33:35,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:35,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 00:33:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:35,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:35,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:35,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:35,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:33:35,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:35,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:35,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:35,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:35,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:35,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:35,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:35,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:35,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:35,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:35,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:35,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:35,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:35,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:35,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:33:35,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:35,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:35,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:35,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:35,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:33:35,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:36,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:36,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:33:36,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:33:36,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:36,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:33:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:36,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:36,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:33:36,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:36,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:33:36,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:36,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:33:36,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:36,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:33:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:36,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:33:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:33:36,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:33:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1168 [2020-10-27 00:33:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:36,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:36,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 00:33:36,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:33:36,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 00:33:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 463 proven. 71 refuted. 0 times theorem prover too weak. 1232 trivial. 0 not checked. [2020-10-27 00:33:37,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512542588] [2020-10-27 00:33:37,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:37,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:37,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107173659] [2020-10-27 00:33:37,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:37,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:37,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:37,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:37,098 INFO L87 Difference]: Start difference. First operand 41390 states and 47827 transitions. Second operand 7 states. [2020-10-27 00:33:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:54,748 INFO L93 Difference]: Finished difference Result 90676 states and 106340 transitions. [2020-10-27 00:33:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:33:54,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1275 [2020-10-27 00:33:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:54,929 INFO L225 Difference]: With dead ends: 90676 [2020-10-27 00:33:54,929 INFO L226 Difference]: Without dead ends: 50002 [2020-10-27 00:33:54,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50002 states. [2020-10-27 00:33:56,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50002 to 49250. [2020-10-27 00:33:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49250 states. [2020-10-27 00:33:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49250 states to 49250 states and 56891 transitions. [2020-10-27 00:33:56,228 INFO L78 Accepts]: Start accepts. Automaton has 49250 states and 56891 transitions. Word has length 1275 [2020-10-27 00:33:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:56,230 INFO L481 AbstractCegarLoop]: Abstraction has 49250 states and 56891 transitions. [2020-10-27 00:33:56,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 49250 states and 56891 transitions. [2020-10-27 00:33:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2020-10-27 00:33:56,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:56,259 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:33:56,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:33:56,259 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1998210622, now seen corresponding path program 1 times [2020-10-27 00:33:56,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:56,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448278974] [2020-10-27 00:33:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY