/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:38:01,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:38:01,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:38:01,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:38:01,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:38:01,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:38:01,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:38:01,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:38:01,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:38:01,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:38:01,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:38:01,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:38:01,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:38:01,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:38:01,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:38:01,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:38:01,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:38:01,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:38:01,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:38:01,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:38:01,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:38:01,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:38:01,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:38:01,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:38:01,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:38:01,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:38:01,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:38:01,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:38:01,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:38:01,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:38:01,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:38:01,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:38:01,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:38:01,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:38:01,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:38:01,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:38:01,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:38:01,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:38:01,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:38:01,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:38:01,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:38:01,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 18:38:01,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:38:01,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:38:01,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:38:01,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:38:01,630 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:38:01,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:38:01,631 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:38:01,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:38:01,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:38:01,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:38:01,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:38:01,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:38:01,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:38:01,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:38:01,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:38:01,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:38:01,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:38:01,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:38:01,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:38:01,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:38:01,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:38:01,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:38:01,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:38:01,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:38:01,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:38:01,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:38:01,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:38:01,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:38:01,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:38:01,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:38:02,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:38:02,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:38:02,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:38:02,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:38:02,095 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:38:02,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18.c [2020-10-27 18:38:02,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c53b0a2/bfc51ee572864648b2e366a2702c3322/FLAG579f07956 [2020-10-27 18:38:02,991 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:38:02,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label18.c [2020-10-27 18:38:03,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c53b0a2/bfc51ee572864648b2e366a2702c3322/FLAG579f07956 [2020-10-27 18:38:03,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c53b0a2/bfc51ee572864648b2e366a2702c3322 [2020-10-27 18:38:03,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:38:03,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:38:03,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:38:03,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:38:03,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:38:03,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:38:03" (1/1) ... [2020-10-27 18:38:03,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25489277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:03, skipping insertion in model container [2020-10-27 18:38:03,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:38:03" (1/1) ... [2020-10-27 18:38:03,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:38:03,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:38:04,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:38:04,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:38:04,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:38:04,336 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:38:04,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04 WrapperNode [2020-10-27 18:38:04,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:38:04,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:38:04,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:38:04,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:38:04,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (1/1) ... [2020-10-27 18:38:04,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (1/1) ... [2020-10-27 18:38:04,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (1/1) ... [2020-10-27 18:38:04,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (1/1) ... [2020-10-27 18:38:04,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (1/1) ... [2020-10-27 18:38:04,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (1/1) ... [2020-10-27 18:38:04,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (1/1) ... [2020-10-27 18:38:04,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:38:04,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:38:04,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:38:04,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:38:04,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (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 [2020-10-27 18:38:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:38:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:38:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:38:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:38:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:38:04,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:38:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:38:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:38:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:38:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:38:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:38:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:38:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:38:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:38:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:38:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:38:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:38:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:38:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:38:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:38:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:38:07,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:38:07,698 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:38:07,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:38:07 BoogieIcfgContainer [2020-10-27 18:38:07,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:38:07,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:38:07,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:38:07,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:38:07,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:38:03" (1/3) ... [2020-10-27 18:38:07,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0ed856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:38:07, skipping insertion in model container [2020-10-27 18:38:07,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:38:04" (2/3) ... [2020-10-27 18:38:07,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0ed856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:38:07, skipping insertion in model container [2020-10-27 18:38:07,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:38:07" (3/3) ... [2020-10-27 18:38:07,711 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label18.c [2020-10-27 18:38:07,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:38:07,730 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:38:07,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:38:07,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:38:07,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:38:07,777 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:38:07,777 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:38:07,777 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:38:07,777 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:38:07,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:38:07,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:38:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:38:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 18:38:07,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:07,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:38:07,814 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:07,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1046264140, now seen corresponding path program 1 times [2020-10-27 18:38:07,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:07,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914936623] [2020-10-27 18:38:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:08,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:08,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 18:38:08,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-27 18:38:08,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:38:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:38:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 18:38:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:38:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:08,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:08,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:38:08,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:08,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:38:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:38:08,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914936623] [2020-10-27 18:38:08,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:38:08,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:38:08,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732098388] [2020-10-27 18:38:08,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:38:08,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:08,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:38:08,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:38:08,739 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 18:38:13,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:13,774 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-27 18:38:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:38:13,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-27 18:38:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:13,814 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 18:38:13,815 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:38:13,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:38:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:38:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-27 18:38:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-27 18:38:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-27 18:38:13,943 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 14 [2020-10-27 18:38:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:13,943 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-27 18:38:13,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:38:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-27 18:38:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 18:38:13,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:13,948 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] [2020-10-27 18:38:13,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:38:13,949 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:13,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1057655916, now seen corresponding path program 1 times [2020-10-27 18:38:13,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:13,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813369352] [2020-10-27 18:38:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:14,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:15,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:15,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:38:15,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:38:15,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1310 [2020-10-27 18:38:15,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:38:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:38:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:38:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:15,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:15,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:15,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:15,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:38:15,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:15,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:15,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:38:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:15,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:15,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:38:15,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 18:38:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:38:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:38:15,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813369352] [2020-10-27 18:38:15,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:15,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:38:15,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817899898] [2020-10-27 18:38:15,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:38:15,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:15,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:38:15,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:38:15,674 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 5 states. [2020-10-27 18:38:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:20,371 INFO L93 Difference]: Finished difference Result 2065 states and 3058 transitions. [2020-10-27 18:38:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:38:20,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-27 18:38:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:20,382 INFO L225 Difference]: With dead ends: 2065 [2020-10-27 18:38:20,383 INFO L226 Difference]: Without dead ends: 1378 [2020-10-27 18:38:20,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:38:20,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-10-27 18:38:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1374. [2020-10-27 18:38:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-27 18:38:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1806 transitions. [2020-10-27 18:38:20,492 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1806 transitions. Word has length 90 [2020-10-27 18:38:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:20,493 INFO L481 AbstractCegarLoop]: Abstraction has 1374 states and 1806 transitions. [2020-10-27 18:38:20,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:38:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1806 transitions. [2020-10-27 18:38:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 18:38:20,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:20,510 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, 2, 2, 2, 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] [2020-10-27 18:38:20,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:38:20,510 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:20,511 INFO L82 PathProgramCache]: Analyzing trace with hash 558036538, now seen corresponding path program 1 times [2020-10-27 18:38:20,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:20,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543311118] [2020-10-27 18:38:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:23,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:23,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 18:38:23,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:38:23,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2968 [2020-10-27 18:38:23,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:38:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:38:23,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:23,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:23,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:23,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:23,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:23,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:38:23,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:23,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:23,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:23,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:38:23,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:38:23,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:23,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:38:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:38:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:23,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:23,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:38:23,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 18:38:23,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:38:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 18:38:24,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543311118] [2020-10-27 18:38:24,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:24,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:38:24,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855591653] [2020-10-27 18:38:24,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:38:24,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:24,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:38:24,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:38:24,071 INFO L87 Difference]: Start difference. First operand 1374 states and 1806 transitions. Second operand 6 states. [2020-10-27 18:38:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:30,356 INFO L93 Difference]: Finished difference Result 4114 states and 5749 transitions. [2020-10-27 18:38:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:38:30,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-10-27 18:38:30,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:30,382 INFO L225 Difference]: With dead ends: 4114 [2020-10-27 18:38:30,382 INFO L226 Difference]: Without dead ends: 2746 [2020-10-27 18:38:30,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:38:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-27 18:38:30,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2742. [2020-10-27 18:38:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2742 states. [2020-10-27 18:38:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 3704 transitions. [2020-10-27 18:38:30,512 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 3704 transitions. Word has length 177 [2020-10-27 18:38:30,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:30,515 INFO L481 AbstractCegarLoop]: Abstraction has 2742 states and 3704 transitions. [2020-10-27 18:38:30,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:38:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 3704 transitions. [2020-10-27 18:38:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 18:38:30,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:30,522 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:38:30,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:38:30,523 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:30,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1361884316, now seen corresponding path program 1 times [2020-10-27 18:38:30,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:30,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209573731] [2020-10-27 18:38:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:30,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:31,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:33,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:33,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 18:38:33,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:38:33,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2762 [2020-10-27 18:38:33,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:38:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:38:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:33,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:33,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:33,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:33,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:38:33,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:38:33,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:33,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:33,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:38:33,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:38:33,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:33,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:33,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:38:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:33,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:33,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:38:33,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 18:38:33,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:38:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 18:38:33,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209573731] [2020-10-27 18:38:33,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:33,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:38:33,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091813150] [2020-10-27 18:38:33,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:38:33,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:33,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:38:33,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:38:33,685 INFO L87 Difference]: Start difference. First operand 2742 states and 3704 transitions. Second operand 5 states. [2020-10-27 18:38:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:38,739 INFO L93 Difference]: Finished difference Result 6841 states and 9550 transitions. [2020-10-27 18:38:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:38:38,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-27 18:38:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:38,770 INFO L225 Difference]: With dead ends: 6841 [2020-10-27 18:38:38,770 INFO L226 Difference]: Without dead ends: 4105 [2020-10-27 18:38:38,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:38:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2020-10-27 18:38:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 4101. [2020-10-27 18:38:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2020-10-27 18:38:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5280 transitions. [2020-10-27 18:38:38,910 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5280 transitions. Word has length 188 [2020-10-27 18:38:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:38,915 INFO L481 AbstractCegarLoop]: Abstraction has 4101 states and 5280 transitions. [2020-10-27 18:38:38,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:38:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5280 transitions. [2020-10-27 18:38:38,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-27 18:38:38,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:38,923 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:38:38,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:38:38,923 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:38,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2137625196, now seen corresponding path program 1 times [2020-10-27 18:38:38,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:38,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501809412] [2020-10-27 18:38:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:42,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:44,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:44,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-27 18:38:44,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:38:44,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 18:38:44,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 264 [2020-10-27 18:38:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:38:44,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:44,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:44,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:44,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:38:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:44,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:38:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:38:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:38:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:38:44,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:38:44,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 18:38:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:38:44,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:38:44,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 18:38:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-27 18:38:44,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501809412] [2020-10-27 18:38:44,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:44,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:38:44,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658974830] [2020-10-27 18:38:44,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:38:44,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:38:44,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:38:44,418 INFO L87 Difference]: Start difference. First operand 4101 states and 5280 transitions. Second operand 5 states. [2020-10-27 18:38:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:49,410 INFO L93 Difference]: Finished difference Result 9565 states and 12735 transitions. [2020-10-27 18:38:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:38:49,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-27 18:38:49,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:49,443 INFO L225 Difference]: With dead ends: 9565 [2020-10-27 18:38:49,443 INFO L226 Difference]: Without dead ends: 5470 [2020-10-27 18:38:49,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:38:49,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5470 states. [2020-10-27 18:38:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5470 to 5466. [2020-10-27 18:38:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5466 states. [2020-10-27 18:38:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 6884 transitions. [2020-10-27 18:38:49,602 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 6884 transitions. Word has length 264 [2020-10-27 18:38:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:49,602 INFO L481 AbstractCegarLoop]: Abstraction has 5466 states and 6884 transitions. [2020-10-27 18:38:49,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:38:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 6884 transitions. [2020-10-27 18:38:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 18:38:49,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:49,611 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:38:49,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:38:49,611 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:49,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1342490878, now seen corresponding path program 1 times [2020-10-27 18:38:49,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:49,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130410230] [2020-10-27 18:38:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:52,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 18:38:52,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:38:52,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3101 [2020-10-27 18:38:52,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:38:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-27 18:38:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:38:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:52,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:38:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:52,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:52,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:38:52,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:52,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:38:52,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:52,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:38:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:38:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:52,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:52,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:38:52,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:38:52,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:38:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:38:52,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:38:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:53,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:53,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:38:53,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 18:38:53,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:38:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 18:38:53,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:38:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:38:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:38:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 18:38:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:38:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:38:53,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130410230] [2020-10-27 18:38:53,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:38:53,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:38:53,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917471441] [2020-10-27 18:38:53,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:38:53,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:38:53,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:38:53,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:38:53,510 INFO L87 Difference]: Start difference. First operand 5466 states and 6884 transitions. Second operand 5 states. [2020-10-27 18:38:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:38:58,792 INFO L93 Difference]: Finished difference Result 12286 states and 15942 transitions. [2020-10-27 18:38:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:38:58,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-27 18:38:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:38:58,830 INFO L225 Difference]: With dead ends: 12286 [2020-10-27 18:38:58,830 INFO L226 Difference]: Without dead ends: 6826 [2020-10-27 18:38:58,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:38:58,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2020-10-27 18:38:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6822. [2020-10-27 18:38:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6822 states. [2020-10-27 18:38:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6822 states to 6822 states and 8463 transitions. [2020-10-27 18:38:59,025 INFO L78 Accepts]: Start accepts. Automaton has 6822 states and 8463 transitions. Word has length 303 [2020-10-27 18:38:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:38:59,026 INFO L481 AbstractCegarLoop]: Abstraction has 6822 states and 8463 transitions. [2020-10-27 18:38:59,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:38:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6822 states and 8463 transitions. [2020-10-27 18:38:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-27 18:38:59,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:38:59,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:38:59,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:38:59,037 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:38:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:38:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash -837461584, now seen corresponding path program 1 times [2020-10-27 18:38:59,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:38:59,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423548287] [2020-10-27 18:38:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:38:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:38:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:59,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:38:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:04,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:04,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-27 18:39:04,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:39:04,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 18:39:04,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:39:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 18:39:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:04,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:04,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:04,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:04,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:39:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:04,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:04,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:04,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:39:04,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:39:04,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:39:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:39:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:04,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:04,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:39:04,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:04,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:39:04,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:04,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:04,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:39:04,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 18:39:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:04,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:04,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:39:04,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 18:39:04,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:39:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 18:39:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 18:39:04,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423548287] [2020-10-27 18:39:04,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:04,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:39:04,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782533740] [2020-10-27 18:39:04,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:39:04,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:04,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:39:04,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:39:04,994 INFO L87 Difference]: Start difference. First operand 6822 states and 8463 transitions. Second operand 7 states. [2020-10-27 18:39:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:39:10,798 INFO L93 Difference]: Finished difference Result 17447 states and 22203 transitions. [2020-10-27 18:39:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:39:10,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-27 18:39:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:39:10,858 INFO L225 Difference]: With dead ends: 17447 [2020-10-27 18:39:10,859 INFO L226 Difference]: Without dead ends: 10631 [2020-10-27 18:39:10,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:39:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10631 states. [2020-10-27 18:39:11,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10631 to 8222. [2020-10-27 18:39:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8222 states. [2020-10-27 18:39:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8222 states to 8222 states and 10250 transitions. [2020-10-27 18:39:11,147 INFO L78 Accepts]: Start accepts. Automaton has 8222 states and 10250 transitions. Word has length 326 [2020-10-27 18:39:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:39:11,148 INFO L481 AbstractCegarLoop]: Abstraction has 8222 states and 10250 transitions. [2020-10-27 18:39:11,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:39:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 8222 states and 10250 transitions. [2020-10-27 18:39:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-27 18:39:11,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:11,169 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:39:11,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:39:11,170 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:11,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1398267298, now seen corresponding path program 1 times [2020-10-27 18:39:11,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:11,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266344671] [2020-10-27 18:39:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:16,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-27 18:39:16,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:39:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 18:39:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:39:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 384 [2020-10-27 18:39:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 18:39:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:16,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:39:16,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:16,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:16,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:39:16,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:39:16,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:16,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:39:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:16,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:16,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:16,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:39:16,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:39:16,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:16,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:16,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 18:39:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:16,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:39:16,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 18:39:16,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 18:39:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:16,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-27 18:39:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:17,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:17,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:39:17,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:39:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 18:39:17,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:39:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 18:39:17,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 385 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-10-27 18:39:17,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266344671] [2020-10-27 18:39:17,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:17,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:39:17,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475431714] [2020-10-27 18:39:17,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:39:17,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:17,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:39:17,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:39:17,495 INFO L87 Difference]: Start difference. First operand 8222 states and 10250 transitions. Second operand 7 states. [2020-10-27 18:39:23,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:39:23,991 INFO L93 Difference]: Finished difference Result 19541 states and 24454 transitions. [2020-10-27 18:39:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:39:23,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 533 [2020-10-27 18:39:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:39:24,036 INFO L225 Difference]: With dead ends: 19541 [2020-10-27 18:39:24,037 INFO L226 Difference]: Without dead ends: 11325 [2020-10-27 18:39:24,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:39:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11325 states. [2020-10-27 18:39:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11325 to 10978. [2020-10-27 18:39:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10978 states. [2020-10-27 18:39:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 13357 transitions. [2020-10-27 18:39:24,329 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 13357 transitions. Word has length 533 [2020-10-27 18:39:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:39:24,330 INFO L481 AbstractCegarLoop]: Abstraction has 10978 states and 13357 transitions. [2020-10-27 18:39:24,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:39:24,331 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 13357 transitions. [2020-10-27 18:39:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-27 18:39:24,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:24,362 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:39:24,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:39:24,362 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:24,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:24,363 INFO L82 PathProgramCache]: Analyzing trace with hash 170980908, now seen corresponding path program 1 times [2020-10-27 18:39:24,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:24,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140105479] [2020-10-27 18:39:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:29,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:29,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-10-27 18:39:29,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:39:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 18:39:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:39:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-27 18:39:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-27 18:39:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:29,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:29,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:29,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:29,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:39:29,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:29,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:29,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:29,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:29,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:29,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:29,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:29,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:39:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 18:39:29,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:39:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:29,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:29,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:39:29,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:39:29,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:29,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:29,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:39:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:30,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:30,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:39:30,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 18:39:30,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:39:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:30,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:39:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:30,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:39:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:39:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 18:39:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-27 18:39:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-27 18:39:30,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140105479] [2020-10-27 18:39:30,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:30,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:39:30,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593442028] [2020-10-27 18:39:30,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:39:30,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:30,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:39:30,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:39:30,669 INFO L87 Difference]: Start difference. First operand 10978 states and 13357 transitions. Second operand 5 states. [2020-10-27 18:39:35,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:39:35,222 INFO L93 Difference]: Finished difference Result 21954 states and 26719 transitions. [2020-10-27 18:39:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:39:35,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 636 [2020-10-27 18:39:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:39:35,263 INFO L225 Difference]: With dead ends: 21954 [2020-10-27 18:39:35,263 INFO L226 Difference]: Without dead ends: 10982 [2020-10-27 18:39:35,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:39:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10982 states. [2020-10-27 18:39:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10982 to 10978. [2020-10-27 18:39:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10978 states. [2020-10-27 18:39:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 12540 transitions. [2020-10-27 18:39:35,537 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 12540 transitions. Word has length 636 [2020-10-27 18:39:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:39:35,539 INFO L481 AbstractCegarLoop]: Abstraction has 10978 states and 12540 transitions. [2020-10-27 18:39:35,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:39:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 12540 transitions. [2020-10-27 18:39:35,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-27 18:39:35,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:35,578 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:39:35,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:39:35,579 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:35,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1164576118, now seen corresponding path program 1 times [2020-10-27 18:39:35,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:35,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706593899] [2020-10-27 18:39:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:40,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:40,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 669 [2020-10-27 18:39:40,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:39:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 18:39:40,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:39:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 502 [2020-10-27 18:39:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 18:39:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:40,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:40,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:40,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:40,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:39:40,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:40,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:40,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:40,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:39:40,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:40,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:39:40,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:40,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:40,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:40,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:40,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:40,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:39:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:40,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:40,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:40,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:39:40,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:40,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:39:40,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:40,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:40,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:40,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:40,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 18:39:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:41,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:41,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 18:39:41,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 18:39:41,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-27 18:39:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-27 18:39:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:41,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:41,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:41,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:39:41,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:39:41,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-27 18:39:41,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:39:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 18:39:41,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:42,045 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 390 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-10-27 18:39:42,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706593899] [2020-10-27 18:39:42,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:42,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:39:42,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163371516] [2020-10-27 18:39:42,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:39:42,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:42,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:39:42,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:39:42,049 INFO L87 Difference]: Start difference. First operand 10978 states and 12540 transitions. Second operand 6 states. [2020-10-27 18:39:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:39:47,617 INFO L93 Difference]: Finished difference Result 26725 states and 30790 transitions. [2020-10-27 18:39:47,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:39:47,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 651 [2020-10-27 18:39:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:39:47,678 INFO L225 Difference]: With dead ends: 26725 [2020-10-27 18:39:47,678 INFO L226 Difference]: Without dead ends: 15753 [2020-10-27 18:39:47,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:39:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15753 states. [2020-10-27 18:39:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15753 to 15408. [2020-10-27 18:39:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15408 states. [2020-10-27 18:39:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15408 states to 15408 states and 17761 transitions. [2020-10-27 18:39:48,007 INFO L78 Accepts]: Start accepts. Automaton has 15408 states and 17761 transitions. Word has length 651 [2020-10-27 18:39:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:39:48,009 INFO L481 AbstractCegarLoop]: Abstraction has 15408 states and 17761 transitions. [2020-10-27 18:39:48,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:39:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 15408 states and 17761 transitions. [2020-10-27 18:39:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-27 18:39:48,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:48,044 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:39:48,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:39:48,044 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1130081212, now seen corresponding path program 1 times [2020-10-27 18:39:48,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:48,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347057326] [2020-10-27 18:39:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:53,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:53,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-27 18:39:53,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:39:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 18:39:53,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 456 [2020-10-27 18:39:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:39:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:53,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:53,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:53,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:39:53,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:53,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:53,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:53,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:53,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:39:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:39:53,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:53,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:39:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:53,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:39:53,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:53,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 18:39:53,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 18:39:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-27 18:39:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:54,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:54,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:39:54,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:54,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-27 18:39:54,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:39:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:39:54,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-10-27 18:39:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:54,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:54,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:39:54,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:39:54,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 18:39:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 441 proven. 148 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2020-10-27 18:39:54,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347057326] [2020-10-27 18:39:54,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:54,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:39:54,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499074867] [2020-10-27 18:39:54,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:39:54,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:54,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:39:54,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:39:54,733 INFO L87 Difference]: Start difference. First operand 15408 states and 17761 transitions. Second operand 7 states. [2020-10-27 18:40:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:01,180 INFO L93 Difference]: Finished difference Result 32553 states and 37585 transitions. [2020-10-27 18:40:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:40:01,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 822 [2020-10-27 18:40:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:01,238 INFO L225 Difference]: With dead ends: 32553 [2020-10-27 18:40:01,238 INFO L226 Difference]: Without dead ends: 14381 [2020-10-27 18:40:01,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:40:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14381 states. [2020-10-27 18:40:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14381 to 12660. [2020-10-27 18:40:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12660 states. [2020-10-27 18:40:01,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12660 states to 12660 states and 13278 transitions. [2020-10-27 18:40:01,516 INFO L78 Accepts]: Start accepts. Automaton has 12660 states and 13278 transitions. Word has length 822 [2020-10-27 18:40:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:01,518 INFO L481 AbstractCegarLoop]: Abstraction has 12660 states and 13278 transitions. [2020-10-27 18:40:01,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:40:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 12660 states and 13278 transitions. [2020-10-27 18:40:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2020-10-27 18:40:01,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:01,555 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:40:01,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:40:01,555 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:01,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1105466360, now seen corresponding path program 1 times [2020-10-27 18:40:01,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:01,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500400182] [2020-10-27 18:40:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:02,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:02,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:06,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:06,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1116 [2020-10-27 18:40:06,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:40:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 18:40:06,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 620 [2020-10-27 18:40:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:40:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:07,022 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2020-10-27 18:40:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:07,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:07,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:07,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:40:07,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:07,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:07,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:40:07,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 18:40:07,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:07,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:40:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:07,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:07,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:40:07,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:07,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:40:07,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:07,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:07,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:07,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:07,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-27 18:40:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:07,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:07,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:40:07,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:40:07,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:07,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 18:40:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:07,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:07,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 18:40:07,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:07,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 18:40:07,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 18:40:07,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-10-27 18:40:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:07,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:07,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:40:07,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:40:07,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:40:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-27 18:40:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:07,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:07,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:40:07,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 18:40:07,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:40:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 937 [2020-10-27 18:40:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:08,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:08,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:40:08,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 18:40:08,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 18:40:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:08,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 476 proven. 216 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2020-10-27 18:40:09,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500400182] [2020-10-27 18:40:09,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:09,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:40:09,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696082771] [2020-10-27 18:40:09,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:40:09,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:09,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:40:09,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:40:09,131 INFO L87 Difference]: Start difference. First operand 12660 states and 13278 transitions. Second operand 8 states. [2020-10-27 18:40:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:14,469 INFO L93 Difference]: Finished difference Result 27894 states and 29654 transitions. [2020-10-27 18:40:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:40:14,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1092 [2020-10-27 18:40:14,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:14,518 INFO L225 Difference]: With dead ends: 27894 [2020-10-27 18:40:14,518 INFO L226 Difference]: Without dead ends: 15240 [2020-10-27 18:40:14,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:40:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15240 states. [2020-10-27 18:40:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15240 to 14041. [2020-10-27 18:40:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14041 states. [2020-10-27 18:40:14,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14041 states to 14041 states and 14706 transitions. [2020-10-27 18:40:14,860 INFO L78 Accepts]: Start accepts. Automaton has 14041 states and 14706 transitions. Word has length 1092 [2020-10-27 18:40:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:14,861 INFO L481 AbstractCegarLoop]: Abstraction has 14041 states and 14706 transitions. [2020-10-27 18:40:14,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:40:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 14041 states and 14706 transitions. [2020-10-27 18:40:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2020-10-27 18:40:14,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:14,901 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:40:14,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:40:14,901 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:14,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2024914162, now seen corresponding path program 1 times [2020-10-27 18:40:14,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:14,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279072532] [2020-10-27 18:40:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:20,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:20,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1141 [2020-10-27 18:40:20,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:40:20,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 18:40:20,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 456 [2020-10-27 18:40:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:40:20,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:20,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:20,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:20,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:20,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:20,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:40:20,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:20,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:20,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:20,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:20,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:20,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:40:20,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:40:20,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:20,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:40:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:20,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:40:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:40:20,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 18:40:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:20,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-27 18:40:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:20,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:21,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:21,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:40:21,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:21,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-27 18:40:21,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:40:21,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-27 18:40:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:21,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:21,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 18:40:21,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 18:40:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-27 18:40:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 966 [2020-10-27 18:40:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:21,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:21,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:40:21,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:40:21,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 18:40:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 489 proven. 386 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2020-10-27 18:40:22,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279072532] [2020-10-27 18:40:22,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:22,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:40:22,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632417019] [2020-10-27 18:40:22,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:40:22,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:22,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:40:22,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:40:22,807 INFO L87 Difference]: Start difference. First operand 14041 states and 14706 transitions. Second operand 7 states. [2020-10-27 18:40:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:27,344 INFO L93 Difference]: Finished difference Result 28092 states and 29432 transitions. [2020-10-27 18:40:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:40:27,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1121 [2020-10-27 18:40:27,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:27,377 INFO L225 Difference]: With dead ends: 28092 [2020-10-27 18:40:27,378 INFO L226 Difference]: Without dead ends: 14057 [2020-10-27 18:40:27,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:40:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14057 states. [2020-10-27 18:40:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14057 to 14043. [2020-10-27 18:40:27,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14043 states. [2020-10-27 18:40:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14043 states to 14043 states and 14696 transitions. [2020-10-27 18:40:27,646 INFO L78 Accepts]: Start accepts. Automaton has 14043 states and 14696 transitions. Word has length 1121 [2020-10-27 18:40:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:27,648 INFO L481 AbstractCegarLoop]: Abstraction has 14043 states and 14696 transitions. [2020-10-27 18:40:27,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:40:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 14043 states and 14696 transitions. [2020-10-27 18:40:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1173 [2020-10-27 18:40:27,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:27,698 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:40:27,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:40:27,698 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:27,699 INFO L82 PathProgramCache]: Analyzing trace with hash -2045678064, now seen corresponding path program 1 times [2020-10-27 18:40:27,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:27,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899907031] [2020-10-27 18:40:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:31,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:33,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1196 [2020-10-27 18:40:33,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:40:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 18:40:33,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 812 [2020-10-27 18:40:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:40:33,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:33,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:33,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:40:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:33,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:40:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:40:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:33,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:40:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:33,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:33,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:40:33,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:40:33,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:40:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:33,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:40:33,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:40:33,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:33,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:40:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:33,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:40:33,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 18:40:33,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-27 18:40:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:33,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:40:33,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:33,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 18:40:33,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:40:33,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 802 [2020-10-27 18:40:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:33,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:40:33,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:33,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 18:40:33,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:40:33,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:34,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-27 18:40:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:34,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:34,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:40:34,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:40:34,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 18:40:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 792 proven. 148 refuted. 0 times theorem prover too weak. 1658 trivial. 0 not checked. [2020-10-27 18:40:35,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899907031] [2020-10-27 18:40:35,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:35,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:40:35,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892335000] [2020-10-27 18:40:35,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:40:35,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:40:35,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:40:35,153 INFO L87 Difference]: Start difference. First operand 14043 states and 14696 transitions. Second operand 7 states. [2020-10-27 18:40:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:39,594 INFO L93 Difference]: Finished difference Result 28763 states and 30116 transitions. [2020-10-27 18:40:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:40:39,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1172 [2020-10-27 18:40:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:39,632 INFO L225 Difference]: With dead ends: 28763 [2020-10-27 18:40:39,632 INFO L226 Difference]: Without dead ends: 14045 [2020-10-27 18:40:39,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:40:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14045 states. [2020-10-27 18:40:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14045 to 14037. [2020-10-27 18:40:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14037 states. [2020-10-27 18:40:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14037 states to 14037 states and 14640 transitions. [2020-10-27 18:40:39,899 INFO L78 Accepts]: Start accepts. Automaton has 14037 states and 14640 transitions. Word has length 1172 [2020-10-27 18:40:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:39,901 INFO L481 AbstractCegarLoop]: Abstraction has 14037 states and 14640 transitions. [2020-10-27 18:40:39,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:40:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 14037 states and 14640 transitions. [2020-10-27 18:40:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1362 [2020-10-27 18:40:39,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:39,935 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:40:39,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:40:39,935 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:39,936 INFO L82 PathProgramCache]: Analyzing trace with hash 689382202, now seen corresponding path program 1 times [2020-10-27 18:40:39,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:39,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552597304] [2020-10-27 18:40:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:41,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:41,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:43,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:45,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1385 [2020-10-27 18:40:45,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:40:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-27 18:40:45,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1218 [2020-10-27 18:40:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 18:40:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:45,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:45,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:40:45,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:45,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:45,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:40:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:40:45,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:40:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:40:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:45,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:45,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:40:45,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:40:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:45,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:40:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:45,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:40:45,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:40:45,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:45,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:40:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:45,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:45,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:40:45,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:40:45,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:45,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-27 18:40:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:45,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:40:45,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:40:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 965 [2020-10-27 18:40:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:46,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:46,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 18:40:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:40:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-27 18:40:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1206 [2020-10-27 18:40:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:46,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:46,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:40:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 18:40:46,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 18:40:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 830 proven. 2 refuted. 0 times theorem prover too weak. 2272 trivial. 0 not checked. [2020-10-27 18:40:47,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552597304] [2020-10-27 18:40:47,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:47,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:40:47,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827203204] [2020-10-27 18:40:47,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:40:47,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:47,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:40:47,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:40:47,526 INFO L87 Difference]: Start difference. First operand 14037 states and 14640 transitions. Second operand 7 states. [2020-10-27 18:40:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:51,760 INFO L93 Difference]: Finished difference Result 30441 states and 31757 transitions. [2020-10-27 18:40:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:40:51,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1361 [2020-10-27 18:40:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:51,800 INFO L225 Difference]: With dead ends: 30441 [2020-10-27 18:40:51,800 INFO L226 Difference]: Without dead ends: 16410 [2020-10-27 18:40:51,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:40:51,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16410 states. [2020-10-27 18:40:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16410 to 14033. [2020-10-27 18:40:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14033 states. [2020-10-27 18:40:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14033 states to 14033 states and 14622 transitions. [2020-10-27 18:40:52,200 INFO L78 Accepts]: Start accepts. Automaton has 14033 states and 14622 transitions. Word has length 1361 [2020-10-27 18:40:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:52,202 INFO L481 AbstractCegarLoop]: Abstraction has 14033 states and 14622 transitions. [2020-10-27 18:40:52,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:40:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14033 states and 14622 transitions. [2020-10-27 18:40:52,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2020-10-27 18:40:52,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:52,245 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:40:52,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:40:52,245 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:52,246 INFO L82 PathProgramCache]: Analyzing trace with hash 275258787, now seen corresponding path program 1 times [2020-10-27 18:40:52,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:52,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323201053] [2020-10-27 18:40:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:53,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:57,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:57,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1699 [2020-10-27 18:40:57,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:40:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-27 18:40:57,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:57,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:40:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 975 [2020-10-27 18:40:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-27 18:40:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:57,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:57,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:40:57,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:57,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:57,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:40:57,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:40:57,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:40:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:58,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:58,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:58,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:40:58,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:40:58,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:58,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:40:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:58,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:58,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:58,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:40:58,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:40:58,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:40:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:58,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-27 18:40:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:58,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:58,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:40:58,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:58,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 18:40:58,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:40:58,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:58,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 965 [2020-10-27 18:40:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:58,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:58,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 18:40:58,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-27 18:40:58,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:40:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 339 [2020-10-27 18:40:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:59,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:40:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:59,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:59,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 18:40:59,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 18:40:59,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:40:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 18:40:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1301 [2020-10-27 18:40:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:59,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:59,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:59,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:40:59,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:40:59,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:40:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1516 [2020-10-27 18:40:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:59,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:59,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:40:59,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:40:59,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 18:40:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4353 backedges. 1050 proven. 360 refuted. 0 times theorem prover too weak. 2943 trivial. 0 not checked. [2020-10-27 18:41:01,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323201053] [2020-10-27 18:41:01,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:01,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:41:01,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668292789] [2020-10-27 18:41:01,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:41:01,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:01,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:41:01,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:41:01,518 INFO L87 Difference]: Start difference. First operand 14033 states and 14622 transitions. Second operand 8 states. [2020-10-27 18:41:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:07,630 INFO L93 Difference]: Finished difference Result 31785 states and 33201 transitions. [2020-10-27 18:41:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:41:07,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1671 [2020-10-27 18:41:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:07,661 INFO L225 Difference]: With dead ends: 31785 [2020-10-27 18:41:07,662 INFO L226 Difference]: Without dead ends: 15719 [2020-10-27 18:41:07,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:41:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15719 states. [2020-10-27 18:41:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15719 to 13687. [2020-10-27 18:41:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13687 states. [2020-10-27 18:41:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13687 states to 13687 states and 14184 transitions. [2020-10-27 18:41:07,910 INFO L78 Accepts]: Start accepts. Automaton has 13687 states and 14184 transitions. Word has length 1671 [2020-10-27 18:41:07,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:07,911 INFO L481 AbstractCegarLoop]: Abstraction has 13687 states and 14184 transitions. [2020-10-27 18:41:07,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:41:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 13687 states and 14184 transitions. [2020-10-27 18:41:07,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2020-10-27 18:41:07,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:07,958 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-27 18:41:07,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:41:07,958 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:07,959 INFO L82 PathProgramCache]: Analyzing trace with hash -778769138, now seen corresponding path program 1 times [2020-10-27 18:41:07,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:07,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506139488] [2020-10-27 18:41:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:13,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:13,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1855 [2020-10-27 18:41:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:41:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-27 18:41:13,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 975 [2020-10-27 18:41:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:41:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:13,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:13,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:13,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:13,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:41:13,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:13,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:13,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:13,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:13,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:13,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:41:13,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:41:13,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:13,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:41:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:13,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:13,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:13,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:41:13,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:41:13,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:41:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:14,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:14,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:41:14,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:41:14,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:14,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:41:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:14,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:14,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:41:14,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 18:41:14,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:14,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-27 18:41:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:14,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:14,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:41:14,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 18:41:14,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:41:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 965 [2020-10-27 18:41:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:14,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:14,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:14,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:41:14,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 18:41:14,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:41:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:14,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1036 [2020-10-27 18:41:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:14,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:14,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:14,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:41:14,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:14,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:41:14,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 18:41:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:14,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:14,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1290 [2020-10-27 18:41:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:14,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:14,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 18:41:14,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:41:14,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-27 18:41:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1455 [2020-10-27 18:41:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:15,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:15,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:15,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:41:15,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:41:15,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:41:15,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:15,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1670 [2020-10-27 18:41:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:41:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:41:15,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 18:41:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6143 backedges. 499 proven. 274 refuted. 0 times theorem prover too weak. 5370 trivial. 0 not checked. [2020-10-27 18:41:17,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506139488] [2020-10-27 18:41:17,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:17,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:41:17,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539887759] [2020-10-27 18:41:17,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:41:17,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:17,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:41:17,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:41:17,367 INFO L87 Difference]: Start difference. First operand 13687 states and 14184 transitions. Second operand 7 states. [2020-10-27 18:41:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:22,033 INFO L93 Difference]: Finished difference Result 28056 states and 29089 transitions. [2020-10-27 18:41:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:41:22,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1825 [2020-10-27 18:41:22,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:22,059 INFO L225 Difference]: With dead ends: 28056 [2020-10-27 18:41:22,059 INFO L226 Difference]: Without dead ends: 14375 [2020-10-27 18:41:22,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:41:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14375 states. [2020-10-27 18:41:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14375 to 14363. [2020-10-27 18:41:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14363 states. [2020-10-27 18:41:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14363 states to 14363 states and 14869 transitions. [2020-10-27 18:41:22,294 INFO L78 Accepts]: Start accepts. Automaton has 14363 states and 14869 transitions. Word has length 1825 [2020-10-27 18:41:22,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:22,296 INFO L481 AbstractCegarLoop]: Abstraction has 14363 states and 14869 transitions. [2020-10-27 18:41:22,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:41:22,296 INFO L276 IsEmpty]: Start isEmpty. Operand 14363 states and 14869 transitions. [2020-10-27 18:41:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1876 [2020-10-27 18:41:22,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:22,345 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-27 18:41:22,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 18:41:22,345 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:22,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:22,346 INFO L82 PathProgramCache]: Analyzing trace with hash 293243782, now seen corresponding path program 1 times [2020-10-27 18:41:22,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:22,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368255939] [2020-10-27 18:41:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:23,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:23,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:27,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:27,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1905 [2020-10-27 18:41:27,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:41:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 18:41:27,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1098 [2020-10-27 18:41:27,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-27 18:41:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:28,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:28,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:28,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:41:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:41:28,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:41:28,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:41:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:28,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:28,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:41:28,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:41:28,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:41:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:28,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:41:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:41:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:41:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:28,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:28,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:41:28,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:41:28,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:28,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-27 18:41:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:28,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:28,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:41:28,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:41:28,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:28,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 802 [2020-10-27 18:41:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:28,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:28,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:41:28,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:28,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-27 18:41:28,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-27 18:41:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:28,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1086 [2020-10-27 18:41:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:29,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:29,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:29,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:41:29,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 18:41:29,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 18:41:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1340 [2020-10-27 18:41:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:29,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 18:41:29,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 18:41:29,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-27 18:41:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1505 [2020-10-27 18:41:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:29,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:29,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:29,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:41:29,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:41:29,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:41:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1720 [2020-10-27 18:41:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:29,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:41:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:41:29,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 18:41:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0