/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:12:18,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:12:18,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:12:18,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:12:18,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:12:18,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:12:18,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:12:18,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:12:18,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:12:18,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:12:18,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:12:18,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:12:18,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:12:18,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:12:18,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:12:18,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:12:18,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:12:18,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:12:18,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:12:18,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:12:18,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:12:18,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:12:18,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:12:18,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:12:18,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:12:18,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:12:18,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:12:18,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:12:18,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:12:18,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:12:18,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:12:18,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:12:18,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:12:18,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:12:18,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:12:18,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:12:18,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:12:18,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:12:18,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:12:18,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:12:18,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:12:18,463 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 [2020-10-13 09:12:18,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:12:18,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:12:18,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:12:18,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:12:18,509 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:12:18,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:12:18,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:12:18,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:12:18,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:12:18,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:12:18,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:12:18,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:12:18,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:12:18,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:12:18,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:12:18,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:12:18,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:12:18,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:12:18,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:12:18,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:12:18,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:12:18,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:12:18,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:12:18,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:12:18,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:12:18,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:12:18,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:12:18,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:12:18,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:12:18,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:12:18,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:12:18,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:12:18,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:12:18,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:12:18,839 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:12:18,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58.c [2020-10-13 09:12:18,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a38b84d08/ef625888586045148829321cc1173ad8/FLAG00d8ca9e0 [2020-10-13 09:12:19,635 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:12:19,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label58.c [2020-10-13 09:12:19,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a38b84d08/ef625888586045148829321cc1173ad8/FLAG00d8ca9e0 [2020-10-13 09:12:19,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a38b84d08/ef625888586045148829321cc1173ad8 [2020-10-13 09:12:19,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:12:19,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:12:19,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:12:19,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:12:19,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:12:19,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:19" (1/1) ... [2020-10-13 09:12:19,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678b2c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:19, skipping insertion in model container [2020-10-13 09:12:19,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:19" (1/1) ... [2020-10-13 09:12:19,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:12:19,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:12:20,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:12:20,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:12:21,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:12:21,287 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:12:21,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21 WrapperNode [2020-10-13 09:12:21,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:12:21,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:12:21,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:12:21,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:12:21,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (1/1) ... [2020-10-13 09:12:21,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (1/1) ... [2020-10-13 09:12:21,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (1/1) ... [2020-10-13 09:12:21,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (1/1) ... [2020-10-13 09:12:21,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (1/1) ... [2020-10-13 09:12:21,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (1/1) ... [2020-10-13 09:12:21,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (1/1) ... [2020-10-13 09:12:21,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:12:21,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:12:21,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:12:21,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:12:21,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (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 [2020-10-13 09:12:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:12:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:12:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:12:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:12:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:12:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:12:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:12:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:12:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:12:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:12:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:12:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:12:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:12:27,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:12:27,152 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:12:27,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:27 BoogieIcfgContainer [2020-10-13 09:12:27,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:12:27,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:12:27,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:12:27,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:12:27,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:19" (1/3) ... [2020-10-13 09:12:27,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5519c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:27, skipping insertion in model container [2020-10-13 09:12:27,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:21" (2/3) ... [2020-10-13 09:12:27,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5519c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:27, skipping insertion in model container [2020-10-13 09:12:27,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:27" (3/3) ... [2020-10-13 09:12:27,169 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label58.c [2020-10-13 09:12:27,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:12:27,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:12:27,203 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:12:27,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:12:27,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:12:27,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:12:27,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:12:27,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:12:27,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:12:27,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:12:27,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:12:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:12:27,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 09:12:27,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:27,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:27,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:27,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:27,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2072012024, now seen corresponding path program 1 times [2020-10-13 09:12:27,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:27,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910222470] [2020-10-13 09:12:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:27,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:27,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:27,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 09:12:27,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-13 09:12:27,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:12:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:12:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:12:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:12:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:28,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:28,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:28,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:28,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:12:28,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:28,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:28,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:28,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:12:28,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:12:28,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910222470] [2020-10-13 09:12:28,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:12:28,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:12:28,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992608757] [2020-10-13 09:12:28,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:12:28,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:28,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:12:28,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:12:28,116 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:12:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:34,766 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:12:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:34,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-13 09:12:34,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:34,798 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:12:34,799 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:12:34,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:34,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:12:34,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:12:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:12:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:12:34,919 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 56 [2020-10-13 09:12:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:34,920 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:12:34,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:12:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:12:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 09:12:34,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:34,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:34,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:12:34,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:34,929 INFO L82 PathProgramCache]: Analyzing trace with hash -677211220, now seen corresponding path program 1 times [2020-10-13 09:12:34,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:34,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358114331] [2020-10-13 09:12:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:35,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:37,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:12:37,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:12:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2375 [2020-10-13 09:12:37,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:12:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:12:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:12:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:12:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:12:37,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:12:37,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:12:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:12:37,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358114331] [2020-10-13 09:12:37,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:37,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:12:37,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454982291] [2020-10-13 09:12:37,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:12:37,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:37,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:12:37,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:12:37,820 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-13 09:12:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:44,862 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-13 09:12:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:12:44,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-13 09:12:44,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:44,870 INFO L225 Difference]: With dead ends: 1507 [2020-10-13 09:12:44,870 INFO L226 Difference]: Without dead ends: 695 [2020-10-13 09:12:44,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:12:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-13 09:12:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-13 09:12:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:12:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-13 09:12:44,904 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 125 [2020-10-13 09:12:44,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:44,905 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-13 09:12:44,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:12:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-13 09:12:44,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 09:12:44,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:44,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:44,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:12:44,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:44,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:44,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1765730893, now seen corresponding path program 1 times [2020-10-13 09:12:44,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:44,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887828182] [2020-10-13 09:12:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:45,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:45,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 09:12:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:12:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-13 09:12:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:12:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:12:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:46,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:46,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:12:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:12:46,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:12:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:12:46,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887828182] [2020-10-13 09:12:46,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:46,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:46,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813437756] [2020-10-13 09:12:46,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:46,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:46,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:46,193 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 5 states. [2020-10-13 09:12:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:53,866 INFO L93 Difference]: Finished difference Result 1742 states and 2432 transitions. [2020-10-13 09:12:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:53,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-13 09:12:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:53,874 INFO L225 Difference]: With dead ends: 1742 [2020-10-13 09:12:53,874 INFO L226 Difference]: Without dead ends: 1057 [2020-10-13 09:12:53,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-13 09:12:53,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1050. [2020-10-13 09:12:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-13 09:12:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1461 transitions. [2020-10-13 09:12:53,912 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1461 transitions. Word has length 136 [2020-10-13 09:12:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:53,913 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1461 transitions. [2020-10-13 09:12:53,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:12:53,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1461 transitions. [2020-10-13 09:12:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 09:12:53,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:53,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:53,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:12:53,917 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:53,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1824981262, now seen corresponding path program 1 times [2020-10-13 09:12:53,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:53,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690440206] [2020-10-13 09:12:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:53,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:54,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:54,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 09:12:54,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:12:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-13 09:12:54,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:12:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:12:54,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:54,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:54,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:54,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:54,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:54,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:54,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:54,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:12:54,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:12:54,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:12:54,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:12:54,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690440206] [2020-10-13 09:12:54,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:54,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:54,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57596112] [2020-10-13 09:12:54,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:54,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:54,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:54,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:54,983 INFO L87 Difference]: Start difference. First operand 1050 states and 1461 transitions. Second operand 5 states. [2020-10-13 09:13:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:03,493 INFO L93 Difference]: Finished difference Result 3069 states and 4322 transitions. [2020-10-13 09:13:03,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:03,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-13 09:13:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:03,506 INFO L225 Difference]: With dead ends: 3069 [2020-10-13 09:13:03,507 INFO L226 Difference]: Without dead ends: 2025 [2020-10-13 09:13:03,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2020-10-13 09:13:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2011. [2020-10-13 09:13:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2011 states. [2020-10-13 09:13:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2620 transitions. [2020-10-13 09:13:03,579 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2620 transitions. Word has length 147 [2020-10-13 09:13:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:03,580 INFO L479 AbstractCegarLoop]: Abstraction has 2011 states and 2620 transitions. [2020-10-13 09:13:03,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:03,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2620 transitions. [2020-10-13 09:13:03,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 09:13:03,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:03,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:03,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:13:03,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:03,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:03,586 INFO L82 PathProgramCache]: Analyzing trace with hash 833422252, now seen corresponding path program 1 times [2020-10-13 09:13:03,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:03,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196056885] [2020-10-13 09:13:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:03,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:04,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:04,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:13:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:13:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-13 09:13:04,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 09:13:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:13:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:04,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:04,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:13:04,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:04,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:05,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:05,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:13:05,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 09:13:05,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:13:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:13:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:13:05,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196056885] [2020-10-13 09:13:05,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:05,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:05,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911246918] [2020-10-13 09:13:05,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:05,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:05,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:05,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:05,329 INFO L87 Difference]: Start difference. First operand 2011 states and 2620 transitions. Second operand 5 states. [2020-10-13 09:13:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:12,437 INFO L93 Difference]: Finished difference Result 4049 states and 5283 transitions. [2020-10-13 09:13:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:12,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 09:13:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:12,449 INFO L225 Difference]: With dead ends: 4049 [2020-10-13 09:13:12,449 INFO L226 Difference]: Without dead ends: 2015 [2020-10-13 09:13:12,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:12,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2020-10-13 09:13:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2011. [2020-10-13 09:13:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2011 states. [2020-10-13 09:13:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2618 transitions. [2020-10-13 09:13:12,510 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2618 transitions. Word has length 152 [2020-10-13 09:13:12,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:12,511 INFO L479 AbstractCegarLoop]: Abstraction has 2011 states and 2618 transitions. [2020-10-13 09:13:12,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:12,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2618 transitions. [2020-10-13 09:13:12,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 09:13:12,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:12,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:12,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:13:12,514 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:12,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1528178405, now seen corresponding path program 1 times [2020-10-13 09:13:12,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:12,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037534962] [2020-10-13 09:13:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:13,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 09:13:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:13:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-13 09:13:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 09:13:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:13:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:13,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:13,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:13,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:13,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:13:13,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 09:13:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:13:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:13:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:13:13,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037534962] [2020-10-13 09:13:13,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:13,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:13,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312619810] [2020-10-13 09:13:13,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:13,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:13,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:13,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:13,789 INFO L87 Difference]: Start difference. First operand 2011 states and 2618 transitions. Second operand 5 states. [2020-10-13 09:13:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:20,095 INFO L93 Difference]: Finished difference Result 5897 states and 7763 transitions. [2020-10-13 09:13:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:20,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 09:13:20,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:20,117 INFO L225 Difference]: With dead ends: 5897 [2020-10-13 09:13:20,118 INFO L226 Difference]: Without dead ends: 3892 [2020-10-13 09:13:20,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2020-10-13 09:13:20,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3883. [2020-10-13 09:13:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2020-10-13 09:13:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 4774 transitions. [2020-10-13 09:13:20,219 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 4774 transitions. Word has length 155 [2020-10-13 09:13:20,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:20,220 INFO L479 AbstractCegarLoop]: Abstraction has 3883 states and 4774 transitions. [2020-10-13 09:13:20,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:20,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 4774 transitions. [2020-10-13 09:13:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-13 09:13:20,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:20,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:20,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:13:20,225 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:20,226 INFO L82 PathProgramCache]: Analyzing trace with hash 574496118, now seen corresponding path program 1 times [2020-10-13 09:13:20,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:20,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365571672] [2020-10-13 09:13:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:20,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:25,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:25,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:13:25,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:13:25,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:13:25,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-10-13 09:13:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:13:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:25,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:25,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:25,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:25,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:25,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:25,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:25,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:25,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:13:25,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:13:25,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:25,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:25,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:13:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:25,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:25,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:25,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:13:25,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:25,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:13:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:13:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:13:25,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365571672] [2020-10-13 09:13:25,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:25,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:25,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403720269] [2020-10-13 09:13:25,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:25,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:25,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:25,734 INFO L87 Difference]: Start difference. First operand 3883 states and 4774 transitions. Second operand 5 states. [2020-10-13 09:13:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:30,210 INFO L93 Difference]: Finished difference Result 7780 states and 9585 transitions. [2020-10-13 09:13:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:30,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-13 09:13:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:30,235 INFO L225 Difference]: With dead ends: 7780 [2020-10-13 09:13:30,235 INFO L226 Difference]: Without dead ends: 3887 [2020-10-13 09:13:30,246 INFO L675 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 [2020-10-13 09:13:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2020-10-13 09:13:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3883. [2020-10-13 09:13:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2020-10-13 09:13:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 4770 transitions. [2020-10-13 09:13:30,347 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 4770 transitions. Word has length 243 [2020-10-13 09:13:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:30,348 INFO L479 AbstractCegarLoop]: Abstraction has 3883 states and 4770 transitions. [2020-10-13 09:13:30,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 4770 transitions. [2020-10-13 09:13:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 09:13:30,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:30,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:30,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:13:30,354 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:30,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:30,355 INFO L82 PathProgramCache]: Analyzing trace with hash -804682134, now seen corresponding path program 1 times [2020-10-13 09:13:30,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:30,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098856488] [2020-10-13 09:13:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:30,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:30,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:35,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:35,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 09:13:35,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:13:35,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 09:13:35,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:35,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-13 09:13:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:13:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:35,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:35,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:35,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:35,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:35,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:35,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:13:35,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:13:35,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:13:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:35,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:35,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:13:35,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:35,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:13:35,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:35,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:13:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:13:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-13 09:13:35,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098856488] [2020-10-13 09:13:35,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:35,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:35,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902319203] [2020-10-13 09:13:35,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:35,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:35,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:35,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:35,954 INFO L87 Difference]: Start difference. First operand 3883 states and 4770 transitions. Second operand 5 states. [2020-10-13 09:13:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:45,021 INFO L93 Difference]: Finished difference Result 7774 states and 9571 transitions. [2020-10-13 09:13:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:45,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-13 09:13:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:45,042 INFO L225 Difference]: With dead ends: 7774 [2020-10-13 09:13:45,043 INFO L226 Difference]: Without dead ends: 3887 [2020-10-13 09:13:45,054 INFO L675 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 [2020-10-13 09:13:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2020-10-13 09:13:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3883. [2020-10-13 09:13:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2020-10-13 09:13:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 4766 transitions. [2020-10-13 09:13:45,151 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 4766 transitions. Word has length 249 [2020-10-13 09:13:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:45,152 INFO L479 AbstractCegarLoop]: Abstraction has 3883 states and 4766 transitions. [2020-10-13 09:13:45,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 4766 transitions. [2020-10-13 09:13:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 09:13:45,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:45,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:45,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:13:45,158 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:45,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1723022510, now seen corresponding path program 1 times [2020-10-13 09:13:45,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:45,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244997918] [2020-10-13 09:13:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:48,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-13 09:13:48,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:13:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3512 [2020-10-13 09:13:48,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-13 09:13:48,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:13:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:48,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:48,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:48,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:48,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:48,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:48,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:13:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:13:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:13:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:49,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:49,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:13:49,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:13:49,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:13:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:13:49,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244997918] [2020-10-13 09:13:49,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:49,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:49,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250102320] [2020-10-13 09:13:49,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:49,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:49,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:49,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:49,151 INFO L87 Difference]: Start difference. First operand 3883 states and 4766 transitions. Second operand 5 states. [2020-10-13 09:13:56,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:56,144 INFO L93 Difference]: Finished difference Result 9959 states and 12581 transitions. [2020-10-13 09:13:56,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:56,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-13 09:13:56,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:56,172 INFO L225 Difference]: With dead ends: 9959 [2020-10-13 09:13:56,172 INFO L226 Difference]: Without dead ends: 6082 [2020-10-13 09:13:56,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:56,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6082 states. [2020-10-13 09:13:56,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6082 to 6074. [2020-10-13 09:13:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2020-10-13 09:13:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 7245 transitions. [2020-10-13 09:13:56,306 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 7245 transitions. Word has length 250 [2020-10-13 09:13:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:56,307 INFO L479 AbstractCegarLoop]: Abstraction has 6074 states and 7245 transitions. [2020-10-13 09:13:56,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 7245 transitions. [2020-10-13 09:13:56,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 09:13:56,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:56,314 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:56,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:13:56,314 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:56,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2120414253, now seen corresponding path program 1 times [2020-10-13 09:13:56,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:56,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685458283] [2020-10-13 09:13:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:56,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:59,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:59,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-13 09:13:59,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:13:59,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3187 [2020-10-13 09:13:59,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-13 09:13:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:13:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:59,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:59,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:59,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:59,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:59,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:59,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:59,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:13:59,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:59,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:13:59,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:13:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:59,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:59,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 09:13:59,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:13:59,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:59,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:13:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 09:13:59,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685458283] [2020-10-13 09:13:59,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:59,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:59,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964692435] [2020-10-13 09:13:59,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:59,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:59,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:59,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:59,843 INFO L87 Difference]: Start difference. First operand 6074 states and 7245 transitions. Second operand 5 states. [2020-10-13 09:14:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:06,980 INFO L93 Difference]: Finished difference Result 14934 states and 18233 transitions. [2020-10-13 09:14:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:06,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-13 09:14:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:07,010 INFO L225 Difference]: With dead ends: 14934 [2020-10-13 09:14:07,011 INFO L226 Difference]: Without dead ends: 8866 [2020-10-13 09:14:07,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2020-10-13 09:14:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8859. [2020-10-13 09:14:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8859 states. [2020-10-13 09:14:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8859 states to 8859 states and 10370 transitions. [2020-10-13 09:14:07,202 INFO L78 Accepts]: Start accepts. Automaton has 8859 states and 10370 transitions. Word has length 260 [2020-10-13 09:14:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:07,203 INFO L479 AbstractCegarLoop]: Abstraction has 8859 states and 10370 transitions. [2020-10-13 09:14:07,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:07,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8859 states and 10370 transitions. [2020-10-13 09:14:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 09:14:07,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:07,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:07,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:14:07,215 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:07,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:07,216 INFO L82 PathProgramCache]: Analyzing trace with hash 702345961, now seen corresponding path program 1 times [2020-10-13 09:14:07,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:07,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479885996] [2020-10-13 09:14:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:11,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:11,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-13 09:14:11,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:14:11,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4568 [2020-10-13 09:14:11,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:11,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:11,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 277 [2020-10-13 09:14:11,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:14:11,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:11,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:11,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:14:11,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:11,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:11,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:14:11,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:14:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:11,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:14:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:12,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:12,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:14:12,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:14:12,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 09:14:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:14:12,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479885996] [2020-10-13 09:14:12,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:12,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:12,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874994190] [2020-10-13 09:14:12,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:12,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:12,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:12,238 INFO L87 Difference]: Start difference. First operand 8859 states and 10370 transitions. Second operand 5 states. [2020-10-13 09:14:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:20,502 INFO L93 Difference]: Finished difference Result 20196 states and 24141 transitions. [2020-10-13 09:14:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:20,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-13 09:14:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:20,540 INFO L225 Difference]: With dead ends: 20196 [2020-10-13 09:14:20,541 INFO L226 Difference]: Without dead ends: 11343 [2020-10-13 09:14:20,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11343 states. [2020-10-13 09:14:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11343 to 11339. [2020-10-13 09:14:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11339 states. [2020-10-13 09:14:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11339 states to 11339 states and 13077 transitions. [2020-10-13 09:14:20,776 INFO L78 Accepts]: Start accepts. Automaton has 11339 states and 13077 transitions. Word has length 321 [2020-10-13 09:14:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:20,777 INFO L479 AbstractCegarLoop]: Abstraction has 11339 states and 13077 transitions. [2020-10-13 09:14:20,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:20,777 INFO L276 IsEmpty]: Start isEmpty. Operand 11339 states and 13077 transitions. [2020-10-13 09:14:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-13 09:14:20,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:20,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:14:20,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:14:20,793 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:20,793 INFO L82 PathProgramCache]: Analyzing trace with hash -110708175, now seen corresponding path program 1 times [2020-10-13 09:14:20,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:20,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972423174] [2020-10-13 09:14:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:21,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:25,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:25,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-13 09:14:25,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:14:25,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:14:25,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-13 09:14:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:14:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:25,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:25,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:25,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:14:25,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:26,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:26,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 09:14:26,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:26,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:14:26,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 09:14:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:26,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:14:26,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:14:26,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:14:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 09:14:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:26,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:26,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:26,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:14:26,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:14:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 09:14:26,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:14:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:14:26,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:14:26,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972423174] [2020-10-13 09:14:26,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:26,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:14:26,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795900643] [2020-10-13 09:14:26,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:14:26,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:26,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:14:26,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:14:26,579 INFO L87 Difference]: Start difference. First operand 11339 states and 13077 transitions. Second operand 7 states. [2020-10-13 09:14:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:37,074 INFO L93 Difference]: Finished difference Result 24384 states and 28205 transitions. [2020-10-13 09:14:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:14:37,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-13 09:14:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:37,118 INFO L225 Difference]: With dead ends: 24384 [2020-10-13 09:14:37,118 INFO L226 Difference]: Without dead ends: 13031 [2020-10-13 09:14:37,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:14:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13031 states. [2020-10-13 09:14:37,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13031 to 11488. [2020-10-13 09:14:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11488 states. [2020-10-13 09:14:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11488 states to 11488 states and 13390 transitions. [2020-10-13 09:14:37,385 INFO L78 Accepts]: Start accepts. Automaton has 11488 states and 13390 transitions. Word has length 354 [2020-10-13 09:14:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:37,386 INFO L479 AbstractCegarLoop]: Abstraction has 11488 states and 13390 transitions. [2020-10-13 09:14:37,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:14:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 11488 states and 13390 transitions. [2020-10-13 09:14:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-13 09:14:37,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:37,401 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:37,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:14:37,402 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:37,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:37,402 INFO L82 PathProgramCache]: Analyzing trace with hash -636412136, now seen corresponding path program 1 times [2020-10-13 09:14:37,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:37,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871315625] [2020-10-13 09:14:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:42,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:42,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-13 09:14:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 09:14:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:14:42,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:14:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 09:14:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:14:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:42,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:42,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:42,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:42,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:42,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:14:42,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:42,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:42,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:42,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:42,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 09:14:42,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:14:42,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 09:14:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 09:14:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:42,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:42,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:42,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:42,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:14:42,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:14:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-13 09:14:42,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:14:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:14:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:14:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 09:14:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:43,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:43,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:43,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:14:43,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:43,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:14:43,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 09:14:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 219 proven. 70 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-13 09:14:43,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871315625] [2020-10-13 09:14:43,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:43,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:14:43,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758114407] [2020-10-13 09:14:43,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:14:43,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:43,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:14:43,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:14:43,591 INFO L87 Difference]: Start difference. First operand 11488 states and 13390 transitions. Second operand 10 states. [2020-10-13 09:14:43,836 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-13 09:14:44,170 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-13 09:14:44,376 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-13 09:14:44,552 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-13 09:14:45,445 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-13 09:14:45,858 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-13 09:14:46,098 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-13 09:14:51,088 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-13 09:14:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:54,250 INFO L93 Difference]: Finished difference Result 23190 states and 27149 transitions. [2020-10-13 09:14:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 09:14:54,251 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 355 [2020-10-13 09:14:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:54,293 INFO L225 Difference]: With dead ends: 23190 [2020-10-13 09:14:54,294 INFO L226 Difference]: Without dead ends: 11613 [2020-10-13 09:14:54,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-13 09:14:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11613 states. [2020-10-13 09:14:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11613 to 11532. [2020-10-13 09:14:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11532 states. [2020-10-13 09:14:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 13408 transitions. [2020-10-13 09:14:54,501 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 13408 transitions. Word has length 355 [2020-10-13 09:14:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:54,502 INFO L479 AbstractCegarLoop]: Abstraction has 11532 states and 13408 transitions. [2020-10-13 09:14:54,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:14:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 13408 transitions. [2020-10-13 09:14:54,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-13 09:14:54,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:54,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:54,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:14:54,517 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:54,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:54,517 INFO L82 PathProgramCache]: Analyzing trace with hash 106439290, now seen corresponding path program 1 times [2020-10-13 09:14:54,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:54,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792531750] [2020-10-13 09:14:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:54,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-13 09:14:59,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:14:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:14:59,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:14:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:14:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:59,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:59,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:59,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:14:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:59,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:14:59,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:14:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:59,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:14:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:14:59,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:59,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:14:59,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:14:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:14:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:59,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:14:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:14:59,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:59,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:14:59,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 09:14:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-13 09:14:59,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792531750] [2020-10-13 09:14:59,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:59,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:59,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477381756] [2020-10-13 09:14:59,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:59,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:59,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:59,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:59,944 INFO L87 Difference]: Start difference. First operand 11532 states and 13408 transitions. Second operand 5 states. [2020-10-13 09:15:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:08,101 INFO L93 Difference]: Finished difference Result 23682 states and 27598 transitions. [2020-10-13 09:15:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:08,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 389 [2020-10-13 09:15:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:08,133 INFO L225 Difference]: With dead ends: 23682 [2020-10-13 09:15:08,133 INFO L226 Difference]: Without dead ends: 12156 [2020-10-13 09:15:08,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12156 states. [2020-10-13 09:15:08,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12156 to 11530. [2020-10-13 09:15:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11530 states. [2020-10-13 09:15:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11530 states to 11530 states and 13397 transitions. [2020-10-13 09:15:08,380 INFO L78 Accepts]: Start accepts. Automaton has 11530 states and 13397 transitions. Word has length 389 [2020-10-13 09:15:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:08,381 INFO L479 AbstractCegarLoop]: Abstraction has 11530 states and 13397 transitions. [2020-10-13 09:15:08,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 11530 states and 13397 transitions. [2020-10-13 09:15:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-13 09:15:08,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:08,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:08,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:15:08,395 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:08,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1422383742, now seen corresponding path program 1 times [2020-10-13 09:15:08,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:08,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209274912] [2020-10-13 09:15:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:08,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:09,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:10,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-13 09:15:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3317 [2020-10-13 09:15:11,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-13 09:15:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:15:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:11,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:11,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:11,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:11,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:11,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:15:11,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:11,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:11,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:11,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:11,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:15:11,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:15:11,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:15:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:12,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:12,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:15:12,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 09:15:12,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:12,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:12,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:15:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:15:12,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209274912] [2020-10-13 09:15:12,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:12,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:15:12,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936009592] [2020-10-13 09:15:12,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:15:12,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:12,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:15:12,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:15:12,357 INFO L87 Difference]: Start difference. First operand 11530 states and 13397 transitions. Second operand 5 states. [2020-10-13 09:15:19,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:19,927 INFO L93 Difference]: Finished difference Result 23098 states and 26924 transitions. [2020-10-13 09:15:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:19,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 390 [2020-10-13 09:15:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:19,958 INFO L225 Difference]: With dead ends: 23098 [2020-10-13 09:15:19,958 INFO L226 Difference]: Without dead ends: 11540 [2020-10-13 09:15:19,976 INFO L675 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 [2020-10-13 09:15:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11540 states. [2020-10-13 09:15:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11540 to 11530. [2020-10-13 09:15:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11530 states. [2020-10-13 09:15:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11530 states to 11530 states and 13385 transitions. [2020-10-13 09:15:20,205 INFO L78 Accepts]: Start accepts. Automaton has 11530 states and 13385 transitions. Word has length 390 [2020-10-13 09:15:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:20,206 INFO L479 AbstractCegarLoop]: Abstraction has 11530 states and 13385 transitions. [2020-10-13 09:15:20,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 11530 states and 13385 transitions. [2020-10-13 09:15:20,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-13 09:15:20,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:20,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:20,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:15:20,223 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:20,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:20,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1085887200, now seen corresponding path program 1 times [2020-10-13 09:15:20,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:20,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297793838] [2020-10-13 09:15:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:20,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:24,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:24,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:15:24,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4237 [2020-10-13 09:15:24,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 351 [2020-10-13 09:15:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:15:24,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:24,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:24,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:24,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:15:24,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:24,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:24,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:15:24,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:15:24,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:24,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:15:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:24,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 09:15:24,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:15:24,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-10-13 09:15:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:15:24,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297793838] [2020-10-13 09:15:24,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:24,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:15:24,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144184628] [2020-10-13 09:15:24,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:15:24,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:24,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:15:24,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:15:24,933 INFO L87 Difference]: Start difference. First operand 11530 states and 13385 transitions. Second operand 5 states. [2020-10-13 09:15:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:32,326 INFO L93 Difference]: Finished difference Result 26479 states and 31478 transitions. [2020-10-13 09:15:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:32,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 395 [2020-10-13 09:15:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:32,361 INFO L225 Difference]: With dead ends: 26479 [2020-10-13 09:15:32,362 INFO L226 Difference]: Without dead ends: 14955 [2020-10-13 09:15:32,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14955 states. [2020-10-13 09:15:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14955 to 14939. [2020-10-13 09:15:32,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14939 states. [2020-10-13 09:15:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 17160 transitions. [2020-10-13 09:15:32,614 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 17160 transitions. Word has length 395 [2020-10-13 09:15:32,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:32,615 INFO L479 AbstractCegarLoop]: Abstraction has 14939 states and 17160 transitions. [2020-10-13 09:15:32,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 17160 transitions. [2020-10-13 09:15:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-13 09:15:32,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:32,633 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:32,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:15:32,634 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:32,634 INFO L82 PathProgramCache]: Analyzing trace with hash 878901291, now seen corresponding path program 1 times [2020-10-13 09:15:32,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:32,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169324903] [2020-10-13 09:15:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:37,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:37,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-13 09:15:37,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:15:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4951 [2020-10-13 09:15:37,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 374 [2020-10-13 09:15:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:15:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:37,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:37,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:37,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:15:37,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:37,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:37,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:37,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:15:37,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:15:37,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:15:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:37,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:37,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:15:37,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 09:15:37,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-13 09:15:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:15:38,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169324903] [2020-10-13 09:15:38,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:38,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:15:38,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176606708] [2020-10-13 09:15:38,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:15:38,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:38,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:15:38,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:15:38,181 INFO L87 Difference]: Start difference. First operand 14939 states and 17160 transitions. Second operand 5 states. [2020-10-13 09:15:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:48,200 INFO L93 Difference]: Finished difference Result 37360 states and 43552 transitions. [2020-10-13 09:15:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:48,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 419 [2020-10-13 09:15:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:48,259 INFO L225 Difference]: With dead ends: 37360 [2020-10-13 09:15:48,259 INFO L226 Difference]: Without dead ends: 22427 [2020-10-13 09:15:48,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:48,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22427 states. [2020-10-13 09:15:48,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22427 to 19924. [2020-10-13 09:15:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19924 states. [2020-10-13 09:15:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19924 states to 19924 states and 23520 transitions. [2020-10-13 09:15:48,670 INFO L78 Accepts]: Start accepts. Automaton has 19924 states and 23520 transitions. Word has length 419 [2020-10-13 09:15:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:48,671 INFO L479 AbstractCegarLoop]: Abstraction has 19924 states and 23520 transitions. [2020-10-13 09:15:48,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 19924 states and 23520 transitions. [2020-10-13 09:15:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-13 09:15:48,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:48,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:15:48,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:15:48,694 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:48,695 INFO L82 PathProgramCache]: Analyzing trace with hash 55515437, now seen corresponding path program 1 times [2020-10-13 09:15:48,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:48,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002970946] [2020-10-13 09:15:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:49,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:53,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:53,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-13 09:15:53,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:15:53,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:15:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:15:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:53,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:53,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:53,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:53,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:15:53,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:53,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:53,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:15:53,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:15:53,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:15:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:53,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:15:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:54,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:15:54,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:54,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:15:54,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:54,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:15:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:15:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:54,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-13 09:15:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:54,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 09:15:54,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:54,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:15:54,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:15:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:54,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 237 proven. 88 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 09:15:54,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002970946] [2020-10-13 09:15:54,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:54,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:15:54,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117482365] [2020-10-13 09:15:54,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:15:54,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:54,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:15:54,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:15:54,288 INFO L87 Difference]: Start difference. First operand 19924 states and 23520 transitions. Second operand 7 states. [2020-10-13 09:16:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:06,805 INFO L93 Difference]: Finished difference Result 45745 states and 55012 transitions. [2020-10-13 09:16:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:16:06,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-13 09:16:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:06,864 INFO L225 Difference]: With dead ends: 45745 [2020-10-13 09:16:06,864 INFO L226 Difference]: Without dead ends: 25827 [2020-10-13 09:16:06,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:16:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25827 states. [2020-10-13 09:16:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25827 to 25490. [2020-10-13 09:16:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25490 states. [2020-10-13 09:16:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25490 states to 25490 states and 30320 transitions. [2020-10-13 09:16:07,308 INFO L78 Accepts]: Start accepts. Automaton has 25490 states and 30320 transitions. Word has length 436 [2020-10-13 09:16:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:07,309 INFO L479 AbstractCegarLoop]: Abstraction has 25490 states and 30320 transitions. [2020-10-13 09:16:07,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 25490 states and 30320 transitions. [2020-10-13 09:16:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-13 09:16:07,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:07,478 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:16:07,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:16:07,479 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:07,479 INFO L82 PathProgramCache]: Analyzing trace with hash 499677219, now seen corresponding path program 1 times [2020-10-13 09:16:07,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:07,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593221709] [2020-10-13 09:16:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking...