/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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:28:48,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:28:48,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:28:48,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:28:48,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:28:48,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:28:48,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:28:48,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:28:48,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:28:48,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:28:48,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:28:48,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:28:48,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:28:48,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:28:48,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:28:48,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:28:48,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:28:48,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:28:48,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:28:48,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:28:48,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:28:48,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:28:48,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:28:48,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:28:48,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:28:48,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:28:48,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:28:48,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:28:48,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:28:48,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:28:48,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:28:48,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:28:48,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:28:48,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:28:48,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:28:48,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:28:48,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:28:48,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:28:48,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:28:48,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:28:48,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:28:48,500 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 00:28:48,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:28:48,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:28:48,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:28:48,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:28:48,557 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:28:48,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:28:48,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:28:48,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:28:48,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:28:48,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:28:48,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:28:48,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:28:48,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:28:48,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:28:48,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:28:48,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:28:48,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:28:48,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:28:48,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:28:48,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:28:48,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:28:48,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:28:48,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:28:48,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:28:48,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:28:48,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:28:48,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:28:48,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:28:48,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:28:48,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:28:48,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:28:48,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:28:48,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:28:48,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:28:48,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:28:48,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29.c [2020-10-27 00:28:49,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2db0b72b0/0f4022c425dc42c781e090de0a9c1078/FLAGbef165781 [2020-10-27 00:28:49,943 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:28:49,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label29.c [2020-10-27 00:28:49,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2db0b72b0/0f4022c425dc42c781e090de0a9c1078/FLAGbef165781 [2020-10-27 00:28:50,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2db0b72b0/0f4022c425dc42c781e090de0a9c1078 [2020-10-27 00:28:50,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:28:50,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:28:50,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:28:50,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:28:50,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:28:50,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:28:50" (1/1) ... [2020-10-27 00:28:50,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4acc9fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:50, skipping insertion in model container [2020-10-27 00:28:50,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:28:50" (1/1) ... [2020-10-27 00:28:50,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:28:50,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:28:51,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:28:51,329 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:28:51,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:28:51,815 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:28:51,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51 WrapperNode [2020-10-27 00:28:51,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:28:51,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:28:51,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:28:51,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:28:51,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:51,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:52,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:52,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (1/1) ... [2020-10-27 00:28:52,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:28:52,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:28:52,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:28:52,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:28:52,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (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 00:28:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:28:52,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:28:52,158 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:28:52,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:28:52,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:28:52,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:28:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:28:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:28:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:28:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:28:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:28:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:28:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:28:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:28:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:28:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:28:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:28:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:28:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:28:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:28:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:28:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:28:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:28:56,144 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:28:56,144 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:28:56,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:28:56 BoogieIcfgContainer [2020-10-27 00:28:56,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:28:56,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:28:56,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:28:56,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:28:56,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:28:50" (1/3) ... [2020-10-27 00:28:56,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d640bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:28:56, skipping insertion in model container [2020-10-27 00:28:56,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:51" (2/3) ... [2020-10-27 00:28:56,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d640bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:28:56, skipping insertion in model container [2020-10-27 00:28:56,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:28:56" (3/3) ... [2020-10-27 00:28:56,157 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label29.c [2020-10-27 00:28:56,168 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:28:56,174 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:28:56,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:28:56,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:28:56,220 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:28:56,220 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:28:56,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:28:56,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:28:56,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:28:56,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:28:56,221 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:28:56,254 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:28:56,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 00:28:56,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:56,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:56,263 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:56,270 INFO L82 PathProgramCache]: Analyzing trace with hash 74890560, now seen corresponding path program 1 times [2020-10-27 00:28:56,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:56,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251081339] [2020-10-27 00:28:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:57,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 00:28:57,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-27 00:28:57,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 00:28:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:28:57,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:57,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:57,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:57,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:28:57,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:57,285 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 00:28:57,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251081339] [2020-10-27 00:28:57,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:28:57,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:28:57,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491415714] [2020-10-27 00:28:57,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:28:57,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:57,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:28:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:28:57,316 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:29:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:08,482 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-27 00:29:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:29:08,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-27 00:29:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:08,525 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:29:08,525 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:29:08,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:29:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:29:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-27 00:29:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-27 00:29:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-27 00:29:08,703 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 46 [2020-10-27 00:29:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:08,703 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-27 00:29:08,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:29:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-27 00:29:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 00:29:08,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:08,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:08,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:29:08,710 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:08,711 INFO L82 PathProgramCache]: Analyzing trace with hash -689295490, now seen corresponding path program 1 times [2020-10-27 00:29:08,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:08,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105278389] [2020-10-27 00:29:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 00:29:10,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-10-27 00:29:10,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:29:10,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:29:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:10,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:29:10,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:10,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:29:10,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:29:10,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:29:10,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:10,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:29:10,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:10,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105278389] [2020-10-27 00:29:10,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:10,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:29:10,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14752860] [2020-10-27 00:29:10,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:10,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:10,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:10,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:10,752 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 7 states. [2020-10-27 00:29:24,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:24,438 INFO L93 Difference]: Finished difference Result 4339 states and 7091 transitions. [2020-10-27 00:29:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:29:24,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-27 00:29:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:24,457 INFO L225 Difference]: With dead ends: 4339 [2020-10-27 00:29:24,457 INFO L226 Difference]: Without dead ends: 2916 [2020-10-27 00:29:24,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:24,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-10-27 00:29:24,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2881. [2020-10-27 00:29:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2881 states. [2020-10-27 00:29:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 3966 transitions. [2020-10-27 00:29:24,572 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 3966 transitions. Word has length 115 [2020-10-27 00:29:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:24,574 INFO L481 AbstractCegarLoop]: Abstraction has 2881 states and 3966 transitions. [2020-10-27 00:29:24,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 3966 transitions. [2020-10-27 00:29:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 00:29:24,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:24,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:24,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:29:24,585 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:24,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1415878852, now seen corresponding path program 1 times [2020-10-27 00:29:24,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:24,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902900157] [2020-10-27 00:29:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:25,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:25,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:29:25,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-27 00:29:25,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 00:29:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:25,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:25,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:25,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:29:25,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:29:25,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 00:29:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:29:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:25,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902900157] [2020-10-27 00:29:25,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:25,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:29:25,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050164843] [2020-10-27 00:29:25,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:25,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:25,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:25,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:25,593 INFO L87 Difference]: Start difference. First operand 2881 states and 3966 transitions. Second operand 7 states. [2020-10-27 00:29:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:40,287 INFO L93 Difference]: Finished difference Result 8002 states and 11149 transitions. [2020-10-27 00:29:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:29:40,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-27 00:29:40,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:40,315 INFO L225 Difference]: With dead ends: 8002 [2020-10-27 00:29:40,315 INFO L226 Difference]: Without dead ends: 5127 [2020-10-27 00:29:40,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:29:40,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2020-10-27 00:29:40,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 5063. [2020-10-27 00:29:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5063 states. [2020-10-27 00:29:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5063 states to 5063 states and 6806 transitions. [2020-10-27 00:29:40,456 INFO L78 Accepts]: Start accepts. Automaton has 5063 states and 6806 transitions. Word has length 118 [2020-10-27 00:29:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:40,456 INFO L481 AbstractCegarLoop]: Abstraction has 5063 states and 6806 transitions. [2020-10-27 00:29:40,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 5063 states and 6806 transitions. [2020-10-27 00:29:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 00:29:40,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:40,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:40,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:29:40,459 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:40,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1432724064, now seen corresponding path program 1 times [2020-10-27 00:29:40,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:40,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450473070] [2020-10-27 00:29:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:41,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:41,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 00:29:41,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-27 00:29:41,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:29:41,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:41,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:29:41,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:41,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:41,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:41,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:29:41,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:41,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:29:41,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:41,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:41,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:41,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:29:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:41,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450473070] [2020-10-27 00:29:41,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:41,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:29:41,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487108060] [2020-10-27 00:29:41,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:41,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:41,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:41,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:41,638 INFO L87 Difference]: Start difference. First operand 5063 states and 6806 transitions. Second operand 7 states. [2020-10-27 00:29:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:56,213 INFO L93 Difference]: Finished difference Result 14728 states and 20354 transitions. [2020-10-27 00:29:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:56,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-27 00:29:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:56,278 INFO L225 Difference]: With dead ends: 14728 [2020-10-27 00:29:56,282 INFO L226 Difference]: Without dead ends: 9671 [2020-10-27 00:29:56,295 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 00:29:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9671 states. [2020-10-27 00:29:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9671 to 9558. [2020-10-27 00:29:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9558 states. [2020-10-27 00:29:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9558 states to 9558 states and 12138 transitions. [2020-10-27 00:29:56,558 INFO L78 Accepts]: Start accepts. Automaton has 9558 states and 12138 transitions. Word has length 136 [2020-10-27 00:29:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:56,560 INFO L481 AbstractCegarLoop]: Abstraction has 9558 states and 12138 transitions. [2020-10-27 00:29:56,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 9558 states and 12138 transitions. [2020-10-27 00:29:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-27 00:29:56,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:56,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:56,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:29:56,565 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:56,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1799756446, now seen corresponding path program 1 times [2020-10-27 00:29:56,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:56,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239482486] [2020-10-27 00:29:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:57,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:00,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:00,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:30:00,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3539 [2020-10-27 00:30:00,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:30:00,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:00,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:00,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:00,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:00,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:30:00,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:00,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:00,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:00,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:00,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 00:30:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:30:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:00,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:00,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:30:00,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:30:00,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:30:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 76 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:30:00,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239482486] [2020-10-27 00:30:00,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:00,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:00,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607207703] [2020-10-27 00:30:00,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:00,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:00,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:00,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:00,961 INFO L87 Difference]: Start difference. First operand 9558 states and 12138 transitions. Second operand 7 states. [2020-10-27 00:30:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:13,643 INFO L93 Difference]: Finished difference Result 21431 states and 27130 transitions. [2020-10-27 00:30:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:30:13,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-27 00:30:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:13,698 INFO L225 Difference]: With dead ends: 21431 [2020-10-27 00:30:13,698 INFO L226 Difference]: Without dead ends: 11879 [2020-10-27 00:30:13,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:30:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11879 states. [2020-10-27 00:30:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11879 to 11758. [2020-10-27 00:30:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11758 states. [2020-10-27 00:30:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11758 states to 11758 states and 14668 transitions. [2020-10-27 00:30:14,009 INFO L78 Accepts]: Start accepts. Automaton has 11758 states and 14668 transitions. Word has length 237 [2020-10-27 00:30:14,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:14,009 INFO L481 AbstractCegarLoop]: Abstraction has 11758 states and 14668 transitions. [2020-10-27 00:30:14,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:14,010 INFO L276 IsEmpty]: Start isEmpty. Operand 11758 states and 14668 transitions. [2020-10-27 00:30:14,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-27 00:30:14,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:14,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:30:14,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:30:14,019 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:14,020 INFO L82 PathProgramCache]: Analyzing trace with hash 466777662, now seen corresponding path program 1 times [2020-10-27 00:30:14,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:14,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716050054] [2020-10-27 00:30:14,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:18,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-27 00:30:18,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:30:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4802 [2020-10-27 00:30:18,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:30:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:30:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:19,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:19,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:19,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:19,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:30:19,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:19,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:19,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:19,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:30:19,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:30:19,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:30:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:19,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:30:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:19,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:19,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:19,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 00:30:19,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:20,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:30:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:20,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:20,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:30:20,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:30:20,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:30:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 237 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 00:30:20,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716050054] [2020-10-27 00:30:20,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:20,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:20,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102364254] [2020-10-27 00:30:20,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:20,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:20,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:20,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:20,876 INFO L87 Difference]: Start difference. First operand 11758 states and 14668 transitions. Second operand 7 states. [2020-10-27 00:30:21,953 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-27 00:30:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:32,297 INFO L93 Difference]: Finished difference Result 23839 states and 29827 transitions. [2020-10-27 00:30:32,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:30:32,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2020-10-27 00:30:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:32,396 INFO L225 Difference]: With dead ends: 23839 [2020-10-27 00:30:32,397 INFO L226 Difference]: Without dead ends: 11789 [2020-10-27 00:30:32,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11789 states. [2020-10-27 00:30:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11789 to 11682. [2020-10-27 00:30:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11682 states. [2020-10-27 00:30:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11682 states to 11682 states and 13332 transitions. [2020-10-27 00:30:32,715 INFO L78 Accepts]: Start accepts. Automaton has 11682 states and 13332 transitions. Word has length 423 [2020-10-27 00:30:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:32,716 INFO L481 AbstractCegarLoop]: Abstraction has 11682 states and 13332 transitions. [2020-10-27 00:30:32,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 11682 states and 13332 transitions. [2020-10-27 00:30:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-10-27 00:30:32,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:32,756 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:30:32,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:30:32,757 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:32,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:32,757 INFO L82 PathProgramCache]: Analyzing trace with hash 283665202, now seen corresponding path program 1 times [2020-10-27 00:30:32,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:32,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498117662] [2020-10-27 00:30:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:33,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 900 [2020-10-27 00:30:38,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:38,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 00:30:38,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 00:30:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-27 00:30:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:38,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:38,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:38,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:30:38,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:39,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-10-27 00:30:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:30:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-27 00:30:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:40,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:40,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:40,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-27 00:30:40,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 00:30:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:41,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:41,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:41,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:30:41,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:41,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:41,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:41,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:30:41,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:42,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-27 00:30:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:30:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:42,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:42,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:42,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:42,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:30:42,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:30:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2020-10-27 00:30:43,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498117662] [2020-10-27 00:30:43,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:43,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:43,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740901902] [2020-10-27 00:30:43,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:30:43,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:43,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:30:43,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:30:43,233 INFO L87 Difference]: Start difference. First operand 11682 states and 13332 transitions. Second operand 8 states. [2020-10-27 00:30:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:59,384 INFO L93 Difference]: Finished difference Result 34884 states and 40612 transitions. [2020-10-27 00:30:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:59,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 880 [2020-10-27 00:30:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:59,452 INFO L225 Difference]: With dead ends: 34884 [2020-10-27 00:30:59,452 INFO L226 Difference]: Without dead ends: 23208 [2020-10-27 00:30:59,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:59,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23208 states. [2020-10-27 00:31:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23208 to 20354. [2020-10-27 00:31:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20354 states. [2020-10-27 00:31:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20354 states to 20354 states and 23060 transitions. [2020-10-27 00:31:00,120 INFO L78 Accepts]: Start accepts. Automaton has 20354 states and 23060 transitions. Word has length 880 [2020-10-27 00:31:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:00,122 INFO L481 AbstractCegarLoop]: Abstraction has 20354 states and 23060 transitions. [2020-10-27 00:31:00,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:31:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 20354 states and 23060 transitions. [2020-10-27 00:31:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-10-27 00:31:00,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:00,177 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 00:31:00,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:31:00,177 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:00,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1389828740, now seen corresponding path program 1 times [2020-10-27 00:31:00,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:00,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391499159] [2020-10-27 00:31:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:01,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1083 [2020-10-27 00:31:05,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 00:31:05,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:31:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:05,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:05,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:31:05,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:06,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 00:31:06,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:06,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:31:06,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:06,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:06,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:06,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:06,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-27 00:31:06,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:07,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:07,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:07,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:07,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:07,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:31:07,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:07,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:07,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:31:07,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:31:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:31:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:07,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:31:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:07,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:31:07,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:31:07,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:31:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:07,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 342 proven. 88 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2020-10-27 00:31:08,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391499159] [2020-10-27 00:31:08,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:08,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:08,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598437890] [2020-10-27 00:31:08,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:08,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:08,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:08,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:08,019 INFO L87 Difference]: Start difference. First operand 20354 states and 23060 transitions. Second operand 7 states. [2020-10-27 00:31:12,163 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:31:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:19,466 INFO L93 Difference]: Finished difference Result 48694 states and 56612 transitions. [2020-10-27 00:31:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:19,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1059 [2020-10-27 00:31:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:19,564 INFO L225 Difference]: With dead ends: 48694 [2020-10-27 00:31:19,564 INFO L226 Difference]: Without dead ends: 28346 [2020-10-27 00:31:19,601 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 00:31:19,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28346 states. [2020-10-27 00:31:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28346 to 27595. [2020-10-27 00:31:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27595 states. [2020-10-27 00:31:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27595 states to 27595 states and 31656 transitions. [2020-10-27 00:31:20,102 INFO L78 Accepts]: Start accepts. Automaton has 27595 states and 31656 transitions. Word has length 1059 [2020-10-27 00:31:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:20,104 INFO L481 AbstractCegarLoop]: Abstraction has 27595 states and 31656 transitions. [2020-10-27 00:31:20,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 27595 states and 31656 transitions. [2020-10-27 00:31:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2020-10-27 00:31:20,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:20,130 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:31:20,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:31:20,130 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:20,131 INFO L82 PathProgramCache]: Analyzing trace with hash 348622056, now seen corresponding path program 1 times [2020-10-27 00:31:20,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:20,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553859329] [2020-10-27 00:31:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:20,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1193 [2020-10-27 00:31:25,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 00:31:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:31:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:25,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:25,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:25,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:25,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:25,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:25,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:31:25,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:25,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:25,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:25,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:26,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:31:26,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:26,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:26,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:26,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:26,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 00:31:26,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:26,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:26,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:31:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:26,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:31:26,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:31:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 00:31:26,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:31:26,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-27 00:31:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:26,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 406 proven. 121 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2020-10-27 00:31:27,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553859329] [2020-10-27 00:31:27,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:27,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:27,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555602589] [2020-10-27 00:31:27,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:27,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:27,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:27,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:27,843 INFO L87 Difference]: Start difference. First operand 27595 states and 31656 transitions. Second operand 7 states. [2020-10-27 00:31:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:38,642 INFO L93 Difference]: Finished difference Result 70312 states and 82274 transitions. [2020-10-27 00:31:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:31:38,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1169 [2020-10-27 00:31:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:38,752 INFO L225 Difference]: With dead ends: 70312 [2020-10-27 00:31:38,752 INFO L226 Difference]: Without dead ends: 42723 [2020-10-27 00:31:38,795 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 00:31:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42723 states. [2020-10-27 00:31:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42723 to 41271. [2020-10-27 00:31:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41271 states. [2020-10-27 00:31:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41271 states to 41271 states and 47227 transitions. [2020-10-27 00:31:39,565 INFO L78 Accepts]: Start accepts. Automaton has 41271 states and 47227 transitions. Word has length 1169 [2020-10-27 00:31:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:39,569 INFO L481 AbstractCegarLoop]: Abstraction has 41271 states and 47227 transitions. [2020-10-27 00:31:39,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:39,569 INFO L276 IsEmpty]: Start isEmpty. Operand 41271 states and 47227 transitions. [2020-10-27 00:31:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1177 [2020-10-27 00:31:39,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:39,590 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:31:39,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:31:39,591 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:39,591 INFO L82 PathProgramCache]: Analyzing trace with hash -192990869, now seen corresponding path program 1 times [2020-10-27 00:31:39,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:39,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053769461] [2020-10-27 00:31:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1200 [2020-10-27 00:31:44,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:44,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 00:31:44,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:44,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:31:44,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:31:44,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:45,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:31:45,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:45,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:31:45,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:45,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:31:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:45,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:45,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:31:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 00:31:45,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:31:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:31:45,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:31:45,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:31:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:31:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:46,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:46,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:46,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:31:46,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:31:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:46,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:46,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 00:31:46,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:31:46,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-27 00:31:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 406 proven. 121 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2020-10-27 00:31:46,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053769461] [2020-10-27 00:31:46,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:46,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:46,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242478567] [2020-10-27 00:31:46,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:46,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:46,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:46,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:46,995 INFO L87 Difference]: Start difference. First operand 41271 states and 47227 transitions. Second operand 7 states. [2020-10-27 00:31:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:58,190 INFO L93 Difference]: Finished difference Result 83989 states and 95963 transitions. [2020-10-27 00:31:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:31:58,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1176 [2020-10-27 00:31:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:58,292 INFO L225 Difference]: With dead ends: 83989 [2020-10-27 00:31:58,293 INFO L226 Difference]: Without dead ends: 42724 [2020-10-27 00:31:58,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:31:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42724 states. [2020-10-27 00:31:59,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42724 to 41977. [2020-10-27 00:31:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41977 states. [2020-10-27 00:31:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41977 states to 41977 states and 47950 transitions. [2020-10-27 00:31:59,243 INFO L78 Accepts]: Start accepts. Automaton has 41977 states and 47950 transitions. Word has length 1176 [2020-10-27 00:31:59,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:59,245 INFO L481 AbstractCegarLoop]: Abstraction has 41977 states and 47950 transitions. [2020-10-27 00:31:59,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:59,245 INFO L276 IsEmpty]: Start isEmpty. Operand 41977 states and 47950 transitions. [2020-10-27 00:31:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1313 [2020-10-27 00:31:59,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:59,275 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:59,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:31:59,276 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:59,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2141282402, now seen corresponding path program 1 times [2020-10-27 00:31:59,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:59,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325854674] [2020-10-27 00:31:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:02,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1338 [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:32:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:04,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:04,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:04,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:04,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:04,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:04,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:04,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:04,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:04,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:32:04,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:04,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:05,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:32:05,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:05,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:05,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:32:05,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:05,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:32:05,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:32:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:05,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:32:05,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:05,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:32:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 569 proven. 121 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-10-27 00:32:06,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325854674] [2020-10-27 00:32:06,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:06,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:06,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221616584] [2020-10-27 00:32:06,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:06,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:06,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:06,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:06,820 INFO L87 Difference]: Start difference. First operand 41977 states and 47950 transitions. Second operand 7 states. [2020-10-27 00:32:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:18,814 INFO L93 Difference]: Finished difference Result 89663 states and 102179 transitions. [2020-10-27 00:32:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:32:18,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1312 [2020-10-27 00:32:18,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:18,920 INFO L225 Difference]: With dead ends: 89663 [2020-10-27 00:32:18,921 INFO L226 Difference]: Without dead ends: 47692 [2020-10-27 00:32:18,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:32:19,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47692 states. [2020-10-27 00:32:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47692 to 44839. [2020-10-27 00:32:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44839 states. [2020-10-27 00:32:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44839 states to 44839 states and 51135 transitions. [2020-10-27 00:32:19,744 INFO L78 Accepts]: Start accepts. Automaton has 44839 states and 51135 transitions. Word has length 1312 [2020-10-27 00:32:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:19,746 INFO L481 AbstractCegarLoop]: Abstraction has 44839 states and 51135 transitions. [2020-10-27 00:32:19,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 44839 states and 51135 transitions. [2020-10-27 00:32:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1324 [2020-10-27 00:32:19,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:19,777 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:19,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:32:19,777 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:19,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:19,778 INFO L82 PathProgramCache]: Analyzing trace with hash -774900900, now seen corresponding path program 1 times [2020-10-27 00:32:19,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:19,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546330910] [2020-10-27 00:32:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:20,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:25,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:25,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1349 [2020-10-27 00:32:25,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 00:32:25,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:32:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-27 00:32:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:25,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:25,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:25,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:32:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:25,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:25,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:25,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:32:25,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:25,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:25,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:25,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:32:25,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:25,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:25,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:25,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:25,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:26,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:32:26,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:26,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:32:26,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:26,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:32:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:32:26,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:32:26,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:32:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:32:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:32:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0