/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem03_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:18:01,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:18:01,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:18:01,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:18:01,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:18:01,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:18:01,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:18:01,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:18:01,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:18:01,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:18:01,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:18:01,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:18:01,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:18:01,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:18:01,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:18:01,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:18:01,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:18:01,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:18:01,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:18:01,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:18:01,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:18:01,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:18:01,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:18:01,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:18:01,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:18:01,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:18:01,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:18:01,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:18:01,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:18:01,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:18:01,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:18:01,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:18:01,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:18:01,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:18:01,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:18:01,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:18:01,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:18:01,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:18:01,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:18:01,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:18:01,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:18:01,529 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 [2020-10-28 10:18:01,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:18:01,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:18:01,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:18:01,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:18:01,558 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:18:01,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:18:01,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:18:01,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:18:01,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:18:01,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:18:01,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:18:01,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:18:01,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:18:01,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:18:01,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:18:01,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:18:01,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:18:01,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:18:01,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:18:01,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:18:01,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:18:01,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:18:01,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:18:01,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:18:01,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:18:01,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:18:01,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:18:01,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:18:01,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:18:01,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:18:01,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:18:01,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:18:01,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:18:01,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:18:01,973 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:18:01,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label34.c [2020-10-28 10:18:02,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/695f46cc5/c0d1f687e8244c2b90eb2f1780438ad2/FLAGac8fc67d1 [2020-10-28 10:18:03,035 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:18:03,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label34.c [2020-10-28 10:18:03,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/695f46cc5/c0d1f687e8244c2b90eb2f1780438ad2/FLAGac8fc67d1 [2020-10-28 10:18:03,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/695f46cc5/c0d1f687e8244c2b90eb2f1780438ad2 [2020-10-28 10:18:03,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:18:03,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:18:03,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:18:03,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:18:03,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:18:03,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:18:03" (1/1) ... [2020-10-28 10:18:03,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad199fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:03, skipping insertion in model container [2020-10-28 10:18:03,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:18:03" (1/1) ... [2020-10-28 10:18:03,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:18:03,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:18:03,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:18:04,005 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:18:04,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:18:04,294 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:18:04,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04 WrapperNode [2020-10-28 10:18:04,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:18:04,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:18:04,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:18:04,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:18:04,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (1/1) ... [2020-10-28 10:18:04,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (1/1) ... [2020-10-28 10:18:04,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (1/1) ... [2020-10-28 10:18:04,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (1/1) ... [2020-10-28 10:18:04,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (1/1) ... [2020-10-28 10:18:04,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (1/1) ... [2020-10-28 10:18:04,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (1/1) ... [2020-10-28 10:18:04,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:18:04,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:18:04,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:18:04,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:18:04,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (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 [2020-10-28 10:18:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:18:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:18:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:18:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:18:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:18:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:18:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:18:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:18:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:18:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:18:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:18:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:18:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:18:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:18:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:18:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:18:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:18:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:18:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:18:06,567 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:18:06,567 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:18:06,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:18:06 BoogieIcfgContainer [2020-10-28 10:18:06,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:18:06,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:18:06,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:18:06,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:18:06,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:18:03" (1/3) ... [2020-10-28 10:18:06,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e7b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:18:06, skipping insertion in model container [2020-10-28 10:18:06,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:18:04" (2/3) ... [2020-10-28 10:18:06,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e7b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:18:06, skipping insertion in model container [2020-10-28 10:18:06,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:18:06" (3/3) ... [2020-10-28 10:18:06,579 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label34.c [2020-10-28 10:18:06,591 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:18:06,597 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:18:06,610 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:18:06,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:18:06,652 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:18:06,652 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:18:06,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:18:06,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:18:06,652 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:18:06,652 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:18:06,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:18:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-28 10:18:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-28 10:18:06,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:06,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:06,714 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:06,721 INFO L82 PathProgramCache]: Analyzing trace with hash -771065156, now seen corresponding path program 1 times [2020-10-28 10:18:06,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:06,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610494934] [2020-10-28 10:18:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:11,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:11,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 10:18:11,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:18:11,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4712 [2020-10-28 10:18:11,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:11,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:18:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:18:11,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-28 10:18:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:18:12,340 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:12,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:12,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:12,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:12,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 10:18:12,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:12,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:18:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:18:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:18:12,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610494934] [2020-10-28 10:18:12,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:18:12,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:18:12,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620607911] [2020-10-28 10:18:12,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:18:12,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:18:12,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:18:12,549 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2020-10-28 10:18:12,789 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:16,656 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-28 10:18:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:18:16,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-28 10:18:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:16,679 INFO L225 Difference]: With dead ends: 889 [2020-10-28 10:18:16,679 INFO L226 Difference]: Without dead ends: 481 [2020-10-28 10:18:16,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:18:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-28 10:18:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-28 10:18:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-28 10:18:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-28 10:18:16,787 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 197 [2020-10-28 10:18:16,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:16,788 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-28 10:18:16,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:18:16,788 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-28 10:18:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-28 10:18:16,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:16,801 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:18:16,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:18:16,802 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:16,803 INFO L82 PathProgramCache]: Analyzing trace with hash 823232299, now seen corresponding path program 1 times [2020-10-28 10:18:16,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:16,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086689231] [2020-10-28 10:18:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:18,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:20,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:20,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-28 10:18:20,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:18:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3643 [2020-10-28 10:18:20,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:20,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:20,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:18:20,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 10:18:20,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:18:21,101 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:21,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:21,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:21,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:21,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:18:21,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:21,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 10:18:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:18:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:18:21,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:21,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:18:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:18:21,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086689231] [2020-10-28 10:18:21,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:21,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:18:21,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411793498] [2020-10-28 10:18:21,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:18:21,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:21,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:18:21,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:18:21,391 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-28 10:18:21,720 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:24,874 INFO L93 Difference]: Finished difference Result 1373 states and 2132 transitions. [2020-10-28 10:18:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:18:24,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-28 10:18:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:24,894 INFO L225 Difference]: With dead ends: 1373 [2020-10-28 10:18:24,894 INFO L226 Difference]: Without dead ends: 903 [2020-10-28 10:18:24,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:18:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-10-28 10:18:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 896. [2020-10-28 10:18:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-28 10:18:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1223 transitions. [2020-10-28 10:18:25,017 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1223 transitions. Word has length 206 [2020-10-28 10:18:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:25,018 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1223 transitions. [2020-10-28 10:18:25,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:18:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1223 transitions. [2020-10-28 10:18:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 10:18:25,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:25,039 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:18:25,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:18:25,042 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash 195761417, now seen corresponding path program 1 times [2020-10-28 10:18:25,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:25,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034366520] [2020-10-28 10:18:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:27,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:27,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:27,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 10:18:27,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:18:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2681 [2020-10-28 10:18:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:27,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 10:18:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 10:18:27,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:18:28,154 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:28,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:28,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:28,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:28,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:18:28,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:28,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:28,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:28,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:28,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 10:18:28,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:28,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 10:18:28,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:28,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:28,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 10:18:28,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:18:28,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034366520] [2020-10-28 10:18:28,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:28,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:18:28,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261695787] [2020-10-28 10:18:28,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:18:28,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:18:28,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:18:28,492 INFO L87 Difference]: Start difference. First operand 896 states and 1223 transitions. Second operand 5 states. [2020-10-28 10:18:28,914 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:32,313 INFO L93 Difference]: Finished difference Result 2211 states and 3131 transitions. [2020-10-28 10:18:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:18:32,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-28 10:18:32,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:32,324 INFO L225 Difference]: With dead ends: 2211 [2020-10-28 10:18:32,324 INFO L226 Difference]: Without dead ends: 1321 [2020-10-28 10:18:32,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:18:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-28 10:18:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1314. [2020-10-28 10:18:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-28 10:18:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1840 transitions. [2020-10-28 10:18:32,386 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1840 transitions. Word has length 215 [2020-10-28 10:18:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:32,387 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1840 transitions. [2020-10-28 10:18:32,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:18:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1840 transitions. [2020-10-28 10:18:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-28 10:18:32,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:32,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:32,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:18:32,395 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:32,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1943027988, now seen corresponding path program 1 times [2020-10-28 10:18:32,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:32,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639363879] [2020-10-28 10:18:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:36,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:36,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-28 10:18:36,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:18:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4463 [2020-10-28 10:18:36,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:36,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 10:18:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 10:18:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:37,357 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:37,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:37,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:37,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:37,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:18:37,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:37,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:18:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:37,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:37,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:37,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:18:37,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 10:18:37,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:37,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:18:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:18:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:18:37,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639363879] [2020-10-28 10:18:37,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:37,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:18:37,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107162456] [2020-10-28 10:18:37,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:18:37,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:37,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:18:37,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:18:37,708 INFO L87 Difference]: Start difference. First operand 1314 states and 1840 transitions. Second operand 5 states. [2020-10-28 10:18:38,070 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:41,545 INFO L93 Difference]: Finished difference Result 3905 states and 5573 transitions. [2020-10-28 10:18:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:18:41,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-28 10:18:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:41,565 INFO L225 Difference]: With dead ends: 3905 [2020-10-28 10:18:41,566 INFO L226 Difference]: Without dead ends: 2597 [2020-10-28 10:18:41,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:18:41,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-10-28 10:18:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2575. [2020-10-28 10:18:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-28 10:18:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3606 transitions. [2020-10-28 10:18:41,667 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3606 transitions. Word has length 233 [2020-10-28 10:18:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:41,668 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3606 transitions. [2020-10-28 10:18:41,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:18:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3606 transitions. [2020-10-28 10:18:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-28 10:18:41,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:41,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:41,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:18:41,679 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1908207622, now seen corresponding path program 1 times [2020-10-28 10:18:41,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:41,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12257638] [2020-10-28 10:18:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:42,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-28 10:18:42,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-28 10:18:42,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:42,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:18:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:18:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 10:18:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:43,038 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:43,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:43,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:43,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:43,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:18:43,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:43,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:18:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:43,189 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:18:43,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:43,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:43,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:18:43,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 10:18:43,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:43,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:18:43,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:18:43,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12257638] [2020-10-28 10:18:43,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:18:43,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:18:43,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083786010] [2020-10-28 10:18:43,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:18:43,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:43,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:18:43,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:18:43,625 INFO L87 Difference]: Start difference. First operand 2575 states and 3606 transitions. Second operand 7 states. [2020-10-28 10:18:43,914 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:18:44,746 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:18:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:48,118 INFO L93 Difference]: Finished difference Result 7820 states and 11568 transitions. [2020-10-28 10:18:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:18:48,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-28 10:18:48,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:48,159 INFO L225 Difference]: With dead ends: 7820 [2020-10-28 10:18:48,160 INFO L226 Difference]: Without dead ends: 5251 [2020-10-28 10:18:48,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:18:48,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2020-10-28 10:18:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 5192. [2020-10-28 10:18:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5192 states. [2020-10-28 10:18:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 7251 transitions. [2020-10-28 10:18:48,420 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 7251 transitions. Word has length 242 [2020-10-28 10:18:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:48,421 INFO L481 AbstractCegarLoop]: Abstraction has 5192 states and 7251 transitions. [2020-10-28 10:18:48,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:18:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 7251 transitions. [2020-10-28 10:18:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 10:18:48,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:48,441 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:48,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:18:48,441 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1947593707, now seen corresponding path program 1 times [2020-10-28 10:18:48,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:48,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537866297] [2020-10-28 10:18:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:52,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:52,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 10:18:52,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:18:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3641 [2020-10-28 10:18:52,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:52,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:18:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:18:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:52,409 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:52,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:52,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:52,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:52,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:18:52,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:52,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:52,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:52,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:18:52,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:18:52,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:52,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:18:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:18:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:52,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:52,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:18:52,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 10:18:52,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:52,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:18:52,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:18:53,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537866297] [2020-10-28 10:18:53,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:53,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:18:53,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104722511] [2020-10-28 10:18:53,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:18:53,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:53,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:18:53,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:18:53,153 INFO L87 Difference]: Start difference. First operand 5192 states and 7251 transitions. Second operand 7 states. [2020-10-28 10:18:53,593 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:18:54,662 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:18:58,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:58,094 INFO L93 Difference]: Finished difference Result 13272 states and 20849 transitions. [2020-10-28 10:18:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:18:58,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-28 10:18:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:58,160 INFO L225 Difference]: With dead ends: 13272 [2020-10-28 10:18:58,160 INFO L226 Difference]: Without dead ends: 8086 [2020-10-28 10:18:58,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:18:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2020-10-28 10:18:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7832. [2020-10-28 10:18:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7832 states. [2020-10-28 10:18:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7832 states to 7832 states and 10751 transitions. [2020-10-28 10:18:58,587 INFO L78 Accepts]: Start accepts. Automaton has 7832 states and 10751 transitions. Word has length 251 [2020-10-28 10:18:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:58,588 INFO L481 AbstractCegarLoop]: Abstraction has 7832 states and 10751 transitions. [2020-10-28 10:18:58,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:18:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7832 states and 10751 transitions. [2020-10-28 10:18:58,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 10:18:58,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:58,617 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:58,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:18:58,618 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:58,620 INFO L82 PathProgramCache]: Analyzing trace with hash -342437465, now seen corresponding path program 1 times [2020-10-28 10:18:58,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:58,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118266821] [2020-10-28 10:18:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:01,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:01,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 10:19:01,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:19:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2570 [2020-10-28 10:19:01,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:01,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:19:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:19:01,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:01,576 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:01,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:01,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:01,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:01,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:01,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:19:01,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:01,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:01,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:01,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:01,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:19:01,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:19:01,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:01,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:01,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:01,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:01,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:19:01,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:19:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:01,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:01,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:19:01,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:01,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 10:19:01,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:01,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:19:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:19:02,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118266821] [2020-10-28 10:19:02,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:02,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:19:02,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808774827] [2020-10-28 10:19:02,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:19:02,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:02,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:19:02,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:19:02,061 INFO L87 Difference]: Start difference. First operand 7832 states and 10751 transitions. Second operand 7 states. [2020-10-28 10:19:02,314 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:19:03,551 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:19:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:05,805 INFO L93 Difference]: Finished difference Result 15806 states and 22000 transitions. [2020-10-28 10:19:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:19:05,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-28 10:19:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:05,844 INFO L225 Difference]: With dead ends: 15806 [2020-10-28 10:19:05,845 INFO L226 Difference]: Without dead ends: 7980 [2020-10-28 10:19:05,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:19:05,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2020-10-28 10:19:06,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 7896. [2020-10-28 10:19:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7896 states. [2020-10-28 10:19:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 9793 transitions. [2020-10-28 10:19:06,104 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 9793 transitions. Word has length 253 [2020-10-28 10:19:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:06,104 INFO L481 AbstractCegarLoop]: Abstraction has 7896 states and 9793 transitions. [2020-10-28 10:19:06,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:19:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 9793 transitions. [2020-10-28 10:19:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 10:19:06,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:06,131 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:06,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:19:06,132 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:06,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1522944791, now seen corresponding path program 1 times [2020-10-28 10:19:06,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:06,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562605921] [2020-10-28 10:19:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:11,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:11,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-28 10:19:11,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:19:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 10:19:11,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:11,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 10:19:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:19:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 10:19:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:11,576 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:11,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:11,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:19:11,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:11,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:11,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:11,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:19:11,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:11,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:19:11,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:11,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:19:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:11,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:19:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:11,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:11,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:11,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:19:11,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 10:19:11,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:11,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:19:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:11,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:19:11,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:19:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:19:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 10:19:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:12,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:19:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 124 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 10:19:12,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562605921] [2020-10-28 10:19:12,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:12,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 10:19:12,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256208044] [2020-10-28 10:19:12,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 10:19:12,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:12,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 10:19:12,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 10:19:12,351 INFO L87 Difference]: Start difference. First operand 7896 states and 9793 transitions. Second operand 10 states. [2020-10-28 10:19:12,697 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:19:13,810 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 162 [2020-10-28 10:19:15,236 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:19:16,060 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2020-10-28 10:19:18,128 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 164 [2020-10-28 10:19:19,555 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-10-28 10:19:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:21,334 INFO L93 Difference]: Finished difference Result 19944 states and 25455 transitions. [2020-10-28 10:19:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 10:19:21,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 285 [2020-10-28 10:19:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:21,381 INFO L225 Difference]: With dead ends: 19944 [2020-10-28 10:19:21,381 INFO L226 Difference]: Without dead ends: 12054 [2020-10-28 10:19:21,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2020-10-28 10:19:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12054 states. [2020-10-28 10:19:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12054 to 11930. [2020-10-28 10:19:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11930 states. [2020-10-28 10:19:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11930 states to 11930 states and 14710 transitions. [2020-10-28 10:19:21,724 INFO L78 Accepts]: Start accepts. Automaton has 11930 states and 14710 transitions. Word has length 285 [2020-10-28 10:19:21,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:21,725 INFO L481 AbstractCegarLoop]: Abstraction has 11930 states and 14710 transitions. [2020-10-28 10:19:21,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 10:19:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11930 states and 14710 transitions. [2020-10-28 10:19:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 10:19:21,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:21,763 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 10:19:21,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:19:21,763 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:21,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1830691920, now seen corresponding path program 1 times [2020-10-28 10:19:21,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:21,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118650137] [2020-10-28 10:19:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:22,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:24,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:24,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 10:19:24,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:19:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2381 [2020-10-28 10:19:24,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:24,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:19:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 10:19:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:24,505 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:24,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:24,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:24,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:24,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:24,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:19:24,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:24,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:24,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:24,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:24,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:19:24,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:19:24,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:24,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:19:24,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:24,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:19:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:24,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:24,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 10:19:24,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 10:19:24,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:24,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 10:19:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:24,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 10:19:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:25,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:25,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:19:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:19:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:25,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:19:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 123 proven. 44 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 10:19:25,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118650137] [2020-10-28 10:19:25,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:25,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:19:25,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033295282] [2020-10-28 10:19:25,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:19:25,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:25,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:19:25,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:19:25,214 INFO L87 Difference]: Start difference. First operand 11930 states and 14710 transitions. Second operand 7 states. [2020-10-28 10:19:25,593 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:19:26,709 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:19:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:31,071 INFO L93 Difference]: Finished difference Result 29355 states and 39119 transitions. [2020-10-28 10:19:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:19:31,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-28 10:19:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:31,149 INFO L225 Difference]: With dead ends: 29355 [2020-10-28 10:19:31,149 INFO L226 Difference]: Without dead ends: 17431 [2020-10-28 10:19:31,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:19:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17431 states. [2020-10-28 10:19:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17431 to 17036. [2020-10-28 10:19:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17036 states. [2020-10-28 10:19:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17036 states to 17036 states and 20932 transitions. [2020-10-28 10:19:31,725 INFO L78 Accepts]: Start accepts. Automaton has 17036 states and 20932 transitions. Word has length 317 [2020-10-28 10:19:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:31,726 INFO L481 AbstractCegarLoop]: Abstraction has 17036 states and 20932 transitions. [2020-10-28 10:19:31,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:19:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 17036 states and 20932 transitions. [2020-10-28 10:19:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-28 10:19:31,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:31,781 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 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] [2020-10-28 10:19:31,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:19:31,782 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:31,782 INFO L82 PathProgramCache]: Analyzing trace with hash 752766614, now seen corresponding path program 1 times [2020-10-28 10:19:31,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:31,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048094007] [2020-10-28 10:19:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:32,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:32,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:34,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:36,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-28 10:19:36,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:19:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 10:19:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:36,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:19:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 10:19:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 10:19:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:37,237 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:37,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:37,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:37,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:19:37,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:37,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:37,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:37,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:19:37,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:19:37,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:37,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:37,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:19:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:37,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:37,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 10:19:37,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:37,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 10:19:37,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:37,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 10:19:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 10:19:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:37,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:37,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:19:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 10:19:37,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:37,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:19:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 10:19:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:37,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:37,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:19:37,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 10:19:37,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:37,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:19:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 226 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 10:19:38,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048094007] [2020-10-28 10:19:38,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:38,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 10:19:38,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632177095] [2020-10-28 10:19:38,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 10:19:38,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:38,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 10:19:38,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:19:38,263 INFO L87 Difference]: Start difference. First operand 17036 states and 20932 transitions. Second operand 9 states. [2020-10-28 10:19:38,573 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:19:39,130 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:19:40,463 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:19:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:44,901 INFO L93 Difference]: Finished difference Result 42666 states and 52082 transitions. [2020-10-28 10:19:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 10:19:44,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2020-10-28 10:19:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:44,982 INFO L225 Difference]: With dead ends: 42666 [2020-10-28 10:19:44,983 INFO L226 Difference]: Without dead ends: 25857 [2020-10-28 10:19:45,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-28 10:19:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25857 states. [2020-10-28 10:19:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25857 to 25675. [2020-10-28 10:19:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25675 states. [2020-10-28 10:19:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25675 states to 25675 states and 30697 transitions. [2020-10-28 10:19:45,543 INFO L78 Accepts]: Start accepts. Automaton has 25675 states and 30697 transitions. Word has length 322 [2020-10-28 10:19:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:45,543 INFO L481 AbstractCegarLoop]: Abstraction has 25675 states and 30697 transitions. [2020-10-28 10:19:45,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 10:19:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 25675 states and 30697 transitions. [2020-10-28 10:19:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-28 10:19:45,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:45,598 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:19:45,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:19:45,599 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:45,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:45,599 INFO L82 PathProgramCache]: Analyzing trace with hash -343764745, now seen corresponding path program 1 times [2020-10-28 10:19:45,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:45,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96610943] [2020-10-28 10:19:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:45,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:45,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:46,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-28 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 10:19:50,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:50,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:19:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:19:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 10:19:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:50,986 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:51,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:51,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:19:51,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:51,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:51,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:51,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:51,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:19:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 10:19:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 10:19:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:51,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:51,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:19:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 10:19:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:51,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 10:19:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:51,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 10:19:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:51,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:19:51,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 10:19:51,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:51,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:19:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:51,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 145 proven. 65 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 10:19:51,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96610943] [2020-10-28 10:19:51,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:51,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:19:51,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254490594] [2020-10-28 10:19:51,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:19:51,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:51,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:19:51,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:19:51,882 INFO L87 Difference]: Start difference. First operand 25675 states and 30697 transitions. Second operand 7 states. [2020-10-28 10:19:52,137 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 10:19:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:55,720 INFO L93 Difference]: Finished difference Result 62930 states and 75954 transitions. [2020-10-28 10:19:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:19:55,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-28 10:19:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:55,861 INFO L225 Difference]: With dead ends: 62930 [2020-10-28 10:19:55,862 INFO L226 Difference]: Without dead ends: 37482 [2020-10-28 10:19:56,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 10:19:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37482 states. [2020-10-28 10:19:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37482 to 36571. [2020-10-28 10:19:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36571 states. [2020-10-28 10:19:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36571 states to 36571 states and 44331 transitions. [2020-10-28 10:19:57,029 INFO L78 Accepts]: Start accepts. Automaton has 36571 states and 44331 transitions. Word has length 351 [2020-10-28 10:19:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:57,029 INFO L481 AbstractCegarLoop]: Abstraction has 36571 states and 44331 transitions. [2020-10-28 10:19:57,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:19:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 36571 states and 44331 transitions. [2020-10-28 10:19:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-28 10:19:57,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:57,095 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:57,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:19:57,096 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:57,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1578792044, now seen corresponding path program 1 times [2020-10-28 10:19:57,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:57,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331546707] [2020-10-28 10:19:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:57,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:57,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:02,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-28 10:20:02,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:20:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 10:20:02,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:02,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:20:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 10:20:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 10:20:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:02,894 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:02,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:02,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:20:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:02,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:02,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:03,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:03,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 10:20:03,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 10:20:03,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:03,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 10:20:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:03,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 10:20:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 10:20:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:03,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:20:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:20:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 10:20:03,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:03,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:20:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 162 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 10:20:03,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331546707] [2020-10-28 10:20:03,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:03,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:20:03,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658216111] [2020-10-28 10:20:03,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:20:03,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:03,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:20:03,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:20:03,516 INFO L87 Difference]: Start difference. First operand 36571 states and 44331 transitions. Second operand 5 states. [2020-10-28 10:20:03,799 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:20:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:07,563 INFO L93 Difference]: Finished difference Result 85845 states and 104811 transitions. [2020-10-28 10:20:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:20:07,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-28 10:20:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:07,746 INFO L225 Difference]: With dead ends: 85845 [2020-10-28 10:20:07,746 INFO L226 Difference]: Without dead ends: 49501 [2020-10-28 10:20:07,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:20:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49501 states. [2020-10-28 10:20:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49501 to 49372. [2020-10-28 10:20:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49372 states. [2020-10-28 10:20:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49372 states to 49372 states and 58571 transitions. [2020-10-28 10:20:08,890 INFO L78 Accepts]: Start accepts. Automaton has 49372 states and 58571 transitions. Word has length 362 [2020-10-28 10:20:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:08,891 INFO L481 AbstractCegarLoop]: Abstraction has 49372 states and 58571 transitions. [2020-10-28 10:20:08,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:20:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 49372 states and 58571 transitions. [2020-10-28 10:20:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-28 10:20:08,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:08,969 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:08,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:20:08,969 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:08,969 INFO L82 PathProgramCache]: Analyzing trace with hash 584422657, now seen corresponding path program 1 times [2020-10-28 10:20:08,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:08,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139411782] [2020-10-28 10:20:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:09,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:14,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:14,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-28 10:20:14,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:20:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4992 [2020-10-28 10:20:14,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:14,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-28 10:20:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 10:20:14,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:14,397 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:14,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:14,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:14,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:14,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:20:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:14,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:14,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:14,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:14,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:20:14,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:14,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:20:14,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:14,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:14,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:14,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:20:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:14,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:14,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 10:20:14,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:14,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 10:20:14,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:14,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 10:20:14,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:14,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 10:20:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:14,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:14,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:20:14,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:14,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 10:20:14,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:14,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:14,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:14,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:14,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:20:14,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 10:20:15,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139411782] [2020-10-28 10:20:15,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:15,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:15,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441153286] [2020-10-28 10:20:15,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:15,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:15,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:15,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:15,039 INFO L87 Difference]: Start difference. First operand 49372 states and 58571 transitions. Second operand 7 states. [2020-10-28 10:20:15,509 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:17,553 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:23,592 INFO L93 Difference]: Finished difference Result 183842 states and 234087 transitions. [2020-10-28 10:20:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:20:23,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-28 10:20:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:24,568 INFO L225 Difference]: With dead ends: 183842 [2020-10-28 10:20:24,569 INFO L226 Difference]: Without dead ends: 134703 [2020-10-28 10:20:24,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:20:24,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134703 states. [2020-10-28 10:20:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134703 to 131235. [2020-10-28 10:20:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131235 states. [2020-10-28 10:20:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131235 states to 131235 states and 157999 transitions. [2020-10-28 10:20:28,931 INFO L78 Accepts]: Start accepts. Automaton has 131235 states and 157999 transitions. Word has length 380 [2020-10-28 10:20:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:28,932 INFO L481 AbstractCegarLoop]: Abstraction has 131235 states and 157999 transitions. [2020-10-28 10:20:28,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 131235 states and 157999 transitions. [2020-10-28 10:20:29,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-28 10:20:29,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:29,406 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:29,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 10:20:29,406 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:29,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:29,407 INFO L82 PathProgramCache]: Analyzing trace with hash 184916227, now seen corresponding path program 1 times [2020-10-28 10:20:29,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:29,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087665909] [2020-10-28 10:20:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:29,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-28 10:20:30,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-28 10:20:30,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-28 10:20:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 10:20:30,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:30,706 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:30,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:30,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:20:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:31,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:31,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 10:20:31,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:31,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 10:20:31,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:31,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 10:20:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:31,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 10:20:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:31,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:31,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:20:31,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 10:20:31,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:31,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:20:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 10:20:31,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087665909] [2020-10-28 10:20:31,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:31,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:31,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634356324] [2020-10-28 10:20:31,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:31,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:31,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:31,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:31,513 INFO L87 Difference]: Start difference. First operand 131235 states and 157999 transitions. Second operand 7 states. [2020-10-28 10:20:31,898 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:20:33,794 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:20:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:40,045 INFO L93 Difference]: Finished difference Result 273479 states and 348488 transitions. [2020-10-28 10:20:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:20:40,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-28 10:20:40,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:41,066 INFO L225 Difference]: With dead ends: 273479 [2020-10-28 10:20:41,066 INFO L226 Difference]: Without dead ends: 142477 [2020-10-28 10:20:41,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:20:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142477 states. [2020-10-28 10:20:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142477 to 138621. [2020-10-28 10:20:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138621 states. [2020-10-28 10:20:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138621 states to 138621 states and 168431 transitions. [2020-10-28 10:20:45,605 INFO L78 Accepts]: Start accepts. Automaton has 138621 states and 168431 transitions. Word has length 380 [2020-10-28 10:20:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:45,606 INFO L481 AbstractCegarLoop]: Abstraction has 138621 states and 168431 transitions. [2020-10-28 10:20:45,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 138621 states and 168431 transitions. [2020-10-28 10:20:46,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-28 10:20:46,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:46,240 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:20:46,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 10:20:46,241 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:46,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:46,241 INFO L82 PathProgramCache]: Analyzing trace with hash -253276942, now seen corresponding path program 1 times [2020-10-28 10:20:46,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:46,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578980833] [2020-10-28 10:20:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:48,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:51,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-28 10:20:51,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:20:51,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 10:20:51,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:51,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:20:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:20:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 10:20:51,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:51,695 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:51,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:51,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:51,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:51,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:20:51,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:51,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:51,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:51,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:51,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:51,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:20:51,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:20:51,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:51,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:51,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:51,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:51,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:20:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:51,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:20:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:52,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:52,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 10:20:52,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:20:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-28 10:20:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:52,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 10:20:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 10:20:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:52,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:52,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:20:52,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:52,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:20:52,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:52,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:20:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:52,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-28 10:20:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:52,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:52,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:20:52,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 10:20:52,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:52,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:20:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 218 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 10:20:52,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578980833] [2020-10-28 10:20:52,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:52,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:20:52,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673149930] [2020-10-28 10:20:52,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:20:52,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:52,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:20:52,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:20:52,603 INFO L87 Difference]: Start difference. First operand 138621 states and 168431 transitions. Second operand 8 states. [2020-10-28 10:20:52,916 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-28 10:20:54,802 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:56,387 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 10:21:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:00,698 INFO L93 Difference]: Finished difference Result 323504 states and 395713 transitions. [2020-10-28 10:21:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 10:21:00,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 397 [2020-10-28 10:21:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:01,325 INFO L225 Difference]: With dead ends: 323504 [2020-10-28 10:21:01,325 INFO L226 Difference]: Without dead ends: 185787 [2020-10-28 10:21:01,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 10:21:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185787 states. [2020-10-28 10:21:06,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185787 to 181257. [2020-10-28 10:21:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181257 states. [2020-10-28 10:21:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181257 states to 181257 states and 217833 transitions. [2020-10-28 10:21:06,521 INFO L78 Accepts]: Start accepts. Automaton has 181257 states and 217833 transitions. Word has length 397 [2020-10-28 10:21:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:06,522 INFO L481 AbstractCegarLoop]: Abstraction has 181257 states and 217833 transitions. [2020-10-28 10:21:06,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:21:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 181257 states and 217833 transitions. [2020-10-28 10:21:07,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-28 10:21:07,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:07,304 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:07,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 10:21:07,304 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:07,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1672015866, now seen corresponding path program 1 times [2020-10-28 10:21:07,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:07,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64969362] [2020-10-28 10:21:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:07,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:12,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:12,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-28 10:21:12,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 10:21:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-28 10:21:12,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:12,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:21:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 10:21:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:12,773 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:12,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:12,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:12,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:12,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:12,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:12,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:12,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:21:12,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:12,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:13,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 10:21:13,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:13,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 10:21:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:13,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:21:13,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:21:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:21:13,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:13,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 10:21:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 10:21:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 10:21:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:13,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:13,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-28 10:21:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:13,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:13,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-28 10:21:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:13,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:13,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 200 proven. 6 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-28 10:21:13,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64969362] [2020-10-28 10:21:13,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:13,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:21:13,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649479943] [2020-10-28 10:21:13,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:21:13,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:13,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:21:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:21:13,403 INFO L87 Difference]: Start difference. First operand 181257 states and 217833 transitions. Second operand 6 states. [2020-10-28 10:21:13,670 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:21:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:18,368 INFO L93 Difference]: Finished difference Result 359919 states and 432650 transitions. [2020-10-28 10:21:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:21:18,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 399 [2020-10-28 10:21:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:19,016 INFO L225 Difference]: With dead ends: 359919 [2020-10-28 10:21:19,017 INFO L226 Difference]: Without dead ends: 179568 [2020-10-28 10:21:19,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:21:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179568 states.