/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/Problem18_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:50:50,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:50:50,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:50:50,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:50:50,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:50:50,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:50:50,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:50:50,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:50:50,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:50:50,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:50:50,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:50:50,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:50:50,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:50:50,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:50:50,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:50:50,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:50:50,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:50:50,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:50:50,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:50:50,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:50:50,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:50:50,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:50:50,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:50:50,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:50:50,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:50:50,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:50:50,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:50:50,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:50:50,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:50:50,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:50:50,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:50:50,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:50:50,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:50:50,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:50:50,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:50:50,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:50:50,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:50:50,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:50:50,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:50:50,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:50:50,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:50:50,463 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 09:50:50,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:50:50,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:50:50,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:50:50,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:50:50,487 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:50:50,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:50:50,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:50:50,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:50:50,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:50:50,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:50:50,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:50:50,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:50:50,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:50:50,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:50:50,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:50:50,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:50:50,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:50:50,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:50:50,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:50:50,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:50:50,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:50:50,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:50:50,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:50:50,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:50:50,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:50:50,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:50:50,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:50:50,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:50:50,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:50:50,492 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 09:50:50,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:50:50,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:50:50,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:50:50,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:50:50,811 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:50:50,812 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35.c [2020-10-13 09:50:50,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c5a94fc4/c5d89d2beb6043cc8e0b95a4ad449f0f/FLAG296da76e4 [2020-10-13 09:50:51,685 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:50:51,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label35.c [2020-10-13 09:50:51,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c5a94fc4/c5d89d2beb6043cc8e0b95a4ad449f0f/FLAG296da76e4 [2020-10-13 09:50:52,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c5a94fc4/c5d89d2beb6043cc8e0b95a4ad449f0f [2020-10-13 09:50:52,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:50:52,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:50:52,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:50:52,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:50:52,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:50:52,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:50:52" (1/1) ... [2020-10-13 09:50:52,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:52, skipping insertion in model container [2020-10-13 09:50:52,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:50:52" (1/1) ... [2020-10-13 09:50:52,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:50:52,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:50:53,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:50:53,829 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:50:54,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:50:54,341 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:50:54,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54 WrapperNode [2020-10-13 09:50:54,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:50:54,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:50:54,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:50:54,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:50:54,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (1/1) ... [2020-10-13 09:50:54,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (1/1) ... [2020-10-13 09:50:54,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (1/1) ... [2020-10-13 09:50:54,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (1/1) ... [2020-10-13 09:50:54,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (1/1) ... [2020-10-13 09:50:54,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (1/1) ... [2020-10-13 09:50:54,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (1/1) ... [2020-10-13 09:50:54,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:50:54,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:50:54,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:50:54,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:50:54,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (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 09:50:54,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:50:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:50:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:50:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:50:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:50:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:50:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:50:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:50:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:50:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:50:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:50:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:50:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:50:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:50:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:51:00,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:51:00,538 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:51:00,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:51:00 BoogieIcfgContainer [2020-10-13 09:51:00,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:51:00,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:51:00,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:51:00,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:51:00,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:50:52" (1/3) ... [2020-10-13 09:51:00,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714c0eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:51:00, skipping insertion in model container [2020-10-13 09:51:00,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:50:54" (2/3) ... [2020-10-13 09:51:00,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714c0eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:51:00, skipping insertion in model container [2020-10-13 09:51:00,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:51:00" (3/3) ... [2020-10-13 09:51:00,561 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label35.c [2020-10-13 09:51:00,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:51:00,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:51:00,594 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:51:00,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:51:00,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:51:00,624 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:51:00,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:51:00,624 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:51:00,624 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:51:00,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:51:00,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:51:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:51:00,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 09:51:00,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:00,667 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] [2020-10-13 09:51:00,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:00,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1586237553, now seen corresponding path program 1 times [2020-10-13 09:51:00,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:00,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566143802] [2020-10-13 09:51:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:01,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:01,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 09:51:01,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:01,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-13 09:51:01,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:51:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:51:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:51:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:51:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:01,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:51:01,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:51:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:01,273 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 09:51:01,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566143802] [2020-10-13 09:51:01,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:51:01,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:51:01,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338698192] [2020-10-13 09:51:01,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:51:01,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:01,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:51:01,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:51:01,304 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:51:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:08,490 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:51:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:08,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-13 09:51:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:08,519 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:51:08,519 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:51:08,529 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 09:51:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:51:08,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:51:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:51:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:51:08,685 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 20 [2020-10-13 09:51:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:08,686 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:51:08,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:51:08,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:51:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 09:51:08,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:08,695 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:51:08,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:51:08,697 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:08,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:08,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1748288524, now seen corresponding path program 1 times [2020-10-13 09:51:08,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:08,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271615545] [2020-10-13 09:51:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:08,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:09,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:09,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:51:09,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:09,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-13 09:51:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:51:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:51:09,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:51:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:09,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:09,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:09,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:51:09,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:09,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:09,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:09,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:51:09,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:51:09,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:51:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 09:51:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:09,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271615545] [2020-10-13 09:51:09,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:09,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:09,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822874325] [2020-10-13 09:51:09,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:09,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:09,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:09,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:09,763 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-13 09:51:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:19,999 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-13 09:51:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:20,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 09:51:20,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:20,014 INFO L225 Difference]: With dead ends: 4276 [2020-10-13 09:51:20,014 INFO L226 Difference]: Without dead ends: 2857 [2020-10-13 09:51:20,019 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 09:51:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-13 09:51:20,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-13 09:51:20,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-13 09:51:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-13 09:51:20,097 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 90 [2020-10-13 09:51:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:20,098 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-13 09:51:20,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-13 09:51:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 09:51:20,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:20,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:20,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:51:20,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:20,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1188959164, now seen corresponding path program 1 times [2020-10-13 09:51:20,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:20,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752608278] [2020-10-13 09:51:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:20,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:20,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:20,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:20,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:51:20,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-13 09:51:20,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:51:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:51:20,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:20,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:20,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:20,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:20,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:51:20,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:20,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:20,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:51:20,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:51:20,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:51:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:20,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752608278] [2020-10-13 09:51:20,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:20,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:20,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373124349] [2020-10-13 09:51:20,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:20,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:20,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:20,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:20,842 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 5 states. [2020-10-13 09:51:29,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:29,083 INFO L93 Difference]: Finished difference Result 8547 states and 12183 transitions. [2020-10-13 09:51:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:29,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 09:51:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:29,112 INFO L225 Difference]: With dead ends: 8547 [2020-10-13 09:51:29,112 INFO L226 Difference]: Without dead ends: 5700 [2020-10-13 09:51:29,120 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 09:51:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-13 09:51:29,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-13 09:51:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-13 09:51:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7348 transitions. [2020-10-13 09:51:29,258 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7348 transitions. Word has length 94 [2020-10-13 09:51:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:29,259 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7348 transitions. [2020-10-13 09:51:29,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7348 transitions. [2020-10-13 09:51:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 09:51:29,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:29,263 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:51:29,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:51:29,263 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:29,264 INFO L82 PathProgramCache]: Analyzing trace with hash 551662856, now seen corresponding path program 1 times [2020-10-13 09:51:29,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:29,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459644518] [2020-10-13 09:51:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 09:51:29,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-13 09:51:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:51:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:51:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:30,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:30,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:30,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:51:30,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:30,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:30,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:30,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:30,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:30,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:51:30,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:30,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:51:30,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:51:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:30,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459644518] [2020-10-13 09:51:30,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:30,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:30,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866688000] [2020-10-13 09:51:30,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:30,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:30,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:30,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:30,183 INFO L87 Difference]: Start difference. First operand 5696 states and 7348 transitions. Second operand 5 states. [2020-10-13 09:51:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:38,947 INFO L93 Difference]: Finished difference Result 14227 states and 18961 transitions. [2020-10-13 09:51:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:38,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 09:51:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:38,993 INFO L225 Difference]: With dead ends: 14227 [2020-10-13 09:51:38,993 INFO L226 Difference]: Without dead ends: 8537 [2020-10-13 09:51:39,007 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 09:51:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2020-10-13 09:51:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 8533. [2020-10-13 09:51:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-13 09:51:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10601 transitions. [2020-10-13 09:51:39,221 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10601 transitions. Word has length 108 [2020-10-13 09:51:39,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:39,223 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10601 transitions. [2020-10-13 09:51:39,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10601 transitions. [2020-10-13 09:51:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 09:51:39,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:39,229 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:51:39,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:51:39,230 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1697369380, now seen corresponding path program 1 times [2020-10-13 09:51:39,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:39,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616750741] [2020-10-13 09:51:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:39,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 09:51:39,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:39,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-13 09:51:39,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:51:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:51:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:39,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:39,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:39,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:39,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:39,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:51:39,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:51:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:51:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:40,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616750741] [2020-10-13 09:51:40,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:40,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:40,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443682168] [2020-10-13 09:51:40,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:40,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:40,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:40,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:40,027 INFO L87 Difference]: Start difference. First operand 8533 states and 10601 transitions. Second operand 5 states. [2020-10-13 09:51:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:48,831 INFO L93 Difference]: Finished difference Result 18481 states and 23666 transitions. [2020-10-13 09:51:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:48,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 09:51:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:48,875 INFO L225 Difference]: With dead ends: 18481 [2020-10-13 09:51:48,875 INFO L226 Difference]: Without dead ends: 9954 [2020-10-13 09:51:48,893 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 09:51:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9954 states. [2020-10-13 09:51:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9954 to 9950. [2020-10-13 09:51:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9950 states. [2020-10-13 09:51:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9950 states to 9950 states and 12262 transitions. [2020-10-13 09:51:49,097 INFO L78 Accepts]: Start accepts. Automaton has 9950 states and 12262 transitions. Word has length 110 [2020-10-13 09:51:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:49,098 INFO L479 AbstractCegarLoop]: Abstraction has 9950 states and 12262 transitions. [2020-10-13 09:51:49,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9950 states and 12262 transitions. [2020-10-13 09:51:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 09:51:49,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:49,100 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:51:49,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:51:49,101 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2068391577, now seen corresponding path program 1 times [2020-10-13 09:51:49,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:49,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359291115] [2020-10-13 09:51:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:49,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:49,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:51:49,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:49,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-13 09:51:49,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:51:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:51:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:49,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:49,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:49,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:49,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:49,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:49,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:51:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:51:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:51:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:49,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359291115] [2020-10-13 09:51:49,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:49,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:49,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786190782] [2020-10-13 09:51:49,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:49,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:49,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:49,981 INFO L87 Difference]: Start difference. First operand 9950 states and 12262 transitions. Second operand 5 states. [2020-10-13 09:51:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:58,104 INFO L93 Difference]: Finished difference Result 22738 states and 28905 transitions. [2020-10-13 09:51:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:58,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 09:51:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:58,148 INFO L225 Difference]: With dead ends: 22738 [2020-10-13 09:51:58,148 INFO L226 Difference]: Without dead ends: 12794 [2020-10-13 09:51:58,166 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 09:51:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12794 states. [2020-10-13 09:51:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12794 to 12790. [2020-10-13 09:51:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12790 states. [2020-10-13 09:51:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12790 states to 12790 states and 15571 transitions. [2020-10-13 09:51:58,394 INFO L78 Accepts]: Start accepts. Automaton has 12790 states and 15571 transitions. Word has length 115 [2020-10-13 09:51:58,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:58,395 INFO L479 AbstractCegarLoop]: Abstraction has 12790 states and 15571 transitions. [2020-10-13 09:51:58,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 12790 states and 15571 transitions. [2020-10-13 09:51:58,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 09:51:58,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:58,399 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:51:58,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:51:58,399 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:58,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:58,400 INFO L82 PathProgramCache]: Analyzing trace with hash 699377772, now seen corresponding path program 1 times [2020-10-13 09:51:58,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:58,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45081799] [2020-10-13 09:51:58,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:59,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:59,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 09:51:59,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-13 09:51:59,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:51:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:51:59,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:59,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:59,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:59,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:59,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:59,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:59,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:59,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:59,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:51:59,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:51:59,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:51:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:59,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45081799] [2020-10-13 09:51:59,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:59,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:59,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471521266] [2020-10-13 09:51:59,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:59,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:59,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:59,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:59,556 INFO L87 Difference]: Start difference. First operand 12790 states and 15571 transitions. Second operand 5 states. [2020-10-13 09:52:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:08,681 INFO L93 Difference]: Finished difference Result 31966 states and 39877 transitions. [2020-10-13 09:52:08,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:08,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 09:52:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:08,749 INFO L225 Difference]: With dead ends: 31966 [2020-10-13 09:52:08,750 INFO L226 Difference]: Without dead ends: 19182 [2020-10-13 09:52:08,778 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 09:52:08,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19182 states. [2020-10-13 09:52:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19182 to 19174. [2020-10-13 09:52:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19174 states. [2020-10-13 09:52:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19174 states to 19174 states and 23089 transitions. [2020-10-13 09:52:10,045 INFO L78 Accepts]: Start accepts. Automaton has 19174 states and 23089 transitions. Word has length 170 [2020-10-13 09:52:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:10,046 INFO L479 AbstractCegarLoop]: Abstraction has 19174 states and 23089 transitions. [2020-10-13 09:52:10,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 19174 states and 23089 transitions. [2020-10-13 09:52:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 09:52:10,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:10,052 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 09:52:10,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:52:10,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:10,053 INFO L82 PathProgramCache]: Analyzing trace with hash -737526218, now seen corresponding path program 1 times [2020-10-13 09:52:10,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:10,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438520091] [2020-10-13 09:52:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:10,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:10,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:10,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-13 09:52:10,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-10-13 09:52:10,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:52:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:52:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:10,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:11,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:11,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:11,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:11,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:52:11,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:11,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:11,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:11,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:11,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:11,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:52:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:52:11,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:52:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:11,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:11,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:52:11,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:52:11,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:52:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:52:11,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438520091] [2020-10-13 09:52:11,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:11,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:11,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025640208] [2020-10-13 09:52:11,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:11,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:11,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:11,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:11,155 INFO L87 Difference]: Start difference. First operand 19174 states and 23089 transitions. Second operand 5 states. [2020-10-13 09:52:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:22,296 INFO L93 Difference]: Finished difference Result 47550 states and 58403 transitions. [2020-10-13 09:52:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:22,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 09:52:22,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:22,386 INFO L225 Difference]: With dead ends: 47550 [2020-10-13 09:52:22,386 INFO L226 Difference]: Without dead ends: 28382 [2020-10-13 09:52:22,424 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 09:52:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28382 states. [2020-10-13 09:52:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28382 to 25566. [2020-10-13 09:52:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25566 states. [2020-10-13 09:52:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25566 states to 25566 states and 31346 transitions. [2020-10-13 09:52:22,836 INFO L78 Accepts]: Start accepts. Automaton has 25566 states and 31346 transitions. Word has length 181 [2020-10-13 09:52:22,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:22,837 INFO L479 AbstractCegarLoop]: Abstraction has 25566 states and 31346 transitions. [2020-10-13 09:52:22,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 25566 states and 31346 transitions. [2020-10-13 09:52:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 09:52:22,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:22,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:22,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:52:22,844 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:22,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1109532595, now seen corresponding path program 1 times [2020-10-13 09:52:22,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:22,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833423976] [2020-10-13 09:52:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:22,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:25,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:25,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:52:25,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:52:25,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2718 [2020-10-13 09:52:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-13 09:52:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:52:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:52:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:25,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:25,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:25,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:52:25,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:52:25,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 09:52:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:25,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:25,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:52:25,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:52:25,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:52:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:52:25,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833423976] [2020-10-13 09:52:25,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:25,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:25,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448135308] [2020-10-13 09:52:25,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:25,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:25,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:25,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:25,911 INFO L87 Difference]: Start difference. First operand 25566 states and 31346 transitions. Second operand 5 states. [2020-10-13 09:52:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:38,375 INFO L93 Difference]: Finished difference Result 59648 states and 74874 transitions. [2020-10-13 09:52:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:38,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-13 09:52:38,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:38,465 INFO L225 Difference]: With dead ends: 59648 [2020-10-13 09:52:38,465 INFO L226 Difference]: Without dead ends: 34088 [2020-10-13 09:52:38,501 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 09:52:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34088 states. [2020-10-13 09:52:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34088 to 34080. [2020-10-13 09:52:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34080 states. [2020-10-13 09:52:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34080 states to 34080 states and 41634 transitions. [2020-10-13 09:52:39,182 INFO L78 Accepts]: Start accepts. Automaton has 34080 states and 41634 transitions. Word has length 202 [2020-10-13 09:52:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:39,182 INFO L479 AbstractCegarLoop]: Abstraction has 34080 states and 41634 transitions. [2020-10-13 09:52:39,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 34080 states and 41634 transitions. [2020-10-13 09:52:39,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-13 09:52:39,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:39,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:39,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:52:39,214 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:39,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:39,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1571689081, now seen corresponding path program 1 times [2020-10-13 09:52:39,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:39,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451759793] [2020-10-13 09:52:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:41,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:41,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-13 09:52:41,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2649 [2020-10-13 09:52:41,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-13 09:52:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:52:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:42,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:42,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:42,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:42,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:52:42,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:42,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:52:42,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-13 09:52:42,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-13 09:52:42,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:52:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:42,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:42,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:52:42,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:42,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:52:42,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:52:42,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:42,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451759793] [2020-10-13 09:52:42,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:42,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:42,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42975280] [2020-10-13 09:52:42,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:42,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:42,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:42,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:42,965 INFO L87 Difference]: Start difference. First operand 34080 states and 41634 transitions. Second operand 5 states. [2020-10-13 09:52:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:55,781 INFO L93 Difference]: Finished difference Result 75256 states and 93857 transitions. [2020-10-13 09:52:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:55,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2020-10-13 09:52:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:55,902 INFO L225 Difference]: With dead ends: 75256 [2020-10-13 09:52:55,902 INFO L226 Difference]: Without dead ends: 41182 [2020-10-13 09:52:55,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 09:52:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41182 states. [2020-10-13 09:52:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41182 to 41174. [2020-10-13 09:52:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41174 states. [2020-10-13 09:52:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41174 states to 41174 states and 50201 transitions. [2020-10-13 09:52:57,658 INFO L78 Accepts]: Start accepts. Automaton has 41174 states and 50201 transitions. Word has length 411 [2020-10-13 09:52:57,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:57,659 INFO L479 AbstractCegarLoop]: Abstraction has 41174 states and 50201 transitions. [2020-10-13 09:52:57,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 41174 states and 50201 transitions. [2020-10-13 09:52:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-13 09:52:57,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:57,717 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:57,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:52:57,717 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:57,718 INFO L82 PathProgramCache]: Analyzing trace with hash -972700876, now seen corresponding path program 1 times [2020-10-13 09:52:57,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:57,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085787441] [2020-10-13 09:52:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:58,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:02,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:02,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-13 09:53:02,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:53:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-13 09:53:02,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 501 [2020-10-13 09:53:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:53:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:03,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:03,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:03,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:03,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:53:03,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:03,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:03,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:03,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:03,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:53:03,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:53:03,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:03,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:53:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:03,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:03,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:03,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:53:03,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-13 09:53:03,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-13 09:53:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:03,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:03,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:03,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:53:03,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:03,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:53:03,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:53:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:53:04,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085787441] [2020-10-13 09:53:04,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:04,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:04,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361211745] [2020-10-13 09:53:04,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:04,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:04,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:04,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:04,461 INFO L87 Difference]: Start difference. First operand 41174 states and 50201 transitions. Second operand 5 states. [2020-10-13 09:53:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:17,462 INFO L93 Difference]: Finished difference Result 114166 states and 140572 transitions. [2020-10-13 09:53:17,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:17,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 510 [2020-10-13 09:53:17,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:17,643 INFO L225 Difference]: With dead ends: 114166 [2020-10-13 09:53:17,643 INFO L226 Difference]: Without dead ends: 72998 [2020-10-13 09:53:17,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:53:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72998 states. [2020-10-13 09:53:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72998 to 72292. [2020-10-13 09:53:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72292 states. [2020-10-13 09:53:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72292 states to 72292 states and 86368 transitions. [2020-10-13 09:53:18,556 INFO L78 Accepts]: Start accepts. Automaton has 72292 states and 86368 transitions. Word has length 510 [2020-10-13 09:53:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:18,557 INFO L479 AbstractCegarLoop]: Abstraction has 72292 states and 86368 transitions. [2020-10-13 09:53:18,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 72292 states and 86368 transitions. [2020-10-13 09:53:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-13 09:53:18,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:18,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:18,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:53:18,611 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:18,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:18,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1834004436, now seen corresponding path program 1 times [2020-10-13 09:53:18,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:18,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63339464] [2020-10-13 09:53:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:21,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:21,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 580 [2020-10-13 09:53:21,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:53:21,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2819 [2020-10-13 09:53:21,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:53:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:53:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-13 09:53:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:21,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:21,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:21,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:53:21,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:53:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:21,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:21,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:21,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:53:21,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:21,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 09:53:21,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:53:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 09:53:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 09:53:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:22,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:22,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:53:22,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-13 09:53:22,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 404 [2020-10-13 09:53:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:22,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:22,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:53:22,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:53:22,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:22,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 137 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:53:23,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63339464] [2020-10-13 09:53:23,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:23,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:53:23,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400793355] [2020-10-13 09:53:23,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:53:23,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:23,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:53:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:53:23,134 INFO L87 Difference]: Start difference. First operand 72292 states and 86368 transitions. Second operand 7 states. [2020-10-13 09:53:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:36,436 INFO L93 Difference]: Finished difference Result 149866 states and 179901 transitions. [2020-10-13 09:53:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:53:36,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-13 09:53:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:36,688 INFO L225 Difference]: With dead ends: 149866 [2020-10-13 09:53:36,688 INFO L226 Difference]: Without dead ends: 77580 [2020-10-13 09:53:36,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:53:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77580 states. [2020-10-13 09:53:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77580 to 77574. [2020-10-13 09:53:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77574 states. [2020-10-13 09:53:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77574 states to 77574 states and 93256 transitions. [2020-10-13 09:53:37,872 INFO L78 Accepts]: Start accepts. Automaton has 77574 states and 93256 transitions. Word has length 566 [2020-10-13 09:53:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:37,872 INFO L479 AbstractCegarLoop]: Abstraction has 77574 states and 93256 transitions. [2020-10-13 09:53:37,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:53:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 77574 states and 93256 transitions. [2020-10-13 09:53:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2020-10-13 09:53:37,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:37,913 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:37,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:53:37,914 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:37,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:37,914 INFO L82 PathProgramCache]: Analyzing trace with hash 339592466, now seen corresponding path program 1 times [2020-10-13 09:53:37,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:37,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039883880] [2020-10-13 09:53:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:37,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:38,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:42,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:42,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 672 [2020-10-13 09:53:42,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:53:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 09:53:42,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:53:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:53:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:53:42,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:43,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:43,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:43,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:43,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:53:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:53:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:43,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:53:43,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:53:43,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:53:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:53:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:53:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:43,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:43,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:53:43,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:53:43,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 09:53:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:43,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:43,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 09:53:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:43,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:43,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:43,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:53:43,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:53:43,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:53:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:43,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:43,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-13 09:53:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:43,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:43,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:53:43,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:43,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-13 09:53:43,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 404 [2020-10-13 09:53:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:43,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:43,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:43,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:43,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:43,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:53:43,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:43,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:53:43,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 52 proven. 192 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 09:53:44,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039883880] [2020-10-13 09:53:44,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:44,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:53:44,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060722093] [2020-10-13 09:53:44,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:53:44,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:44,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:53:44,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:53:44,413 INFO L87 Difference]: Start difference. First operand 77574 states and 93256 transitions. Second operand 7 states. [2020-10-13 09:53:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:57,666 INFO L93 Difference]: Finished difference Result 156741 states and 189934 transitions. [2020-10-13 09:53:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:53:57,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 654 [2020-10-13 09:53:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:57,794 INFO L225 Difference]: With dead ends: 156741 [2020-10-13 09:53:57,794 INFO L226 Difference]: Without dead ends: 72022 [2020-10-13 09:53:57,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 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 09:53:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72022 states. [2020-10-13 09:53:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72022 to 71961. [2020-10-13 09:53:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71961 states. [2020-10-13 09:53:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71961 states to 71961 states and 78773 transitions. [2020-10-13 09:53:58,812 INFO L78 Accepts]: Start accepts. Automaton has 71961 states and 78773 transitions. Word has length 654 [2020-10-13 09:53:58,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:58,812 INFO L479 AbstractCegarLoop]: Abstraction has 71961 states and 78773 transitions. [2020-10-13 09:53:58,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:53:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 71961 states and 78773 transitions. [2020-10-13 09:53:58,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2020-10-13 09:53:58,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:58,835 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:58,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:53:58,836 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1264425484, now seen corresponding path program 1 times [2020-10-13 09:53:58,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:58,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348828871] [2020-10-13 09:53:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:58,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:02,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:03,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:03,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 734 [2020-10-13 09:54:03,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:54:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 09:54:03,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:54:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:54:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:03,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:04,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:54:04,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:54:04,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:54:04,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:54:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:54:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:54:04,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:54:04,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:54:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:54:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 09:54:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:54:04,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:54:04,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:54:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-13 09:54:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:54:04,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:54:04,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 404 [2020-10-13 09:54:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:04,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:04,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:54:04,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:04,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:54:04,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 156 proven. 166 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-13 09:54:04,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348828871] [2020-10-13 09:54:04,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:54:04,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:54:04,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057125516] [2020-10-13 09:54:04,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:54:04,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:04,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:54:04,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:54:04,890 INFO L87 Difference]: Start difference. First operand 71961 states and 78773 transitions. Second operand 7 states. [2020-10-13 09:54:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:54:14,162 INFO L93 Difference]: Finished difference Result 142560 states and 156292 transitions. [2020-10-13 09:54:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:54:14,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 716 [2020-10-13 09:54:14,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:54:14,280 INFO L225 Difference]: With dead ends: 142560 [2020-10-13 09:54:14,280 INFO L226 Difference]: Without dead ends: 72017 [2020-10-13 09:54:14,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:54:14,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72017 states. [2020-10-13 09:54:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72017 to 71961. [2020-10-13 09:54:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71961 states. [2020-10-13 09:54:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71961 states to 71961 states and 76828 transitions. [2020-10-13 09:54:17,215 INFO L78 Accepts]: Start accepts. Automaton has 71961 states and 76828 transitions. Word has length 716 [2020-10-13 09:54:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:54:17,216 INFO L479 AbstractCegarLoop]: Abstraction has 71961 states and 76828 transitions. [2020-10-13 09:54:17,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:54:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 71961 states and 76828 transitions. [2020-10-13 09:54:17,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2020-10-13 09:54:17,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:54:17,253 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:54:17,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:54:17,254 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:54:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:54:17,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1628036453, now seen corresponding path program 1 times [2020-10-13 09:54:17,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:54:17,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119635186] [2020-10-13 09:54:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:54:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:22,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:22,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 997 [2020-10-13 09:54:22,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:54:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 09:54:22,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 09:54:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:54:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:22,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:22,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:22,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:22,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:22,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:54:22,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:22,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:22,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:22,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:22,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 09:54:22,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 09:54:22,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-13 09:54:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:22,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:22,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:22,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 09:54:22,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:54:22,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:54:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:22,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-13 09:54:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:22,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:22,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:54:22,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:54:22,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:54:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:54:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:22,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-13 09:54:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:54:23,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:54:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 09:54:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:23,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-10-13 09:54:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:23,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:23,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:23,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:54:23,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:54:23,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:54:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-13 09:54:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:23,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:54:23,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-13 09:54:23,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 404 [2020-10-13 09:54:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:23,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:23,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:54:23,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:54:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 150 proven. 219 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2020-10-13 09:54:23,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119635186] [2020-10-13 09:54:23,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:54:23,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:54:23,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392342056] [2020-10-13 09:54:23,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:54:23,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:23,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:54:23,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:54:23,903 INFO L87 Difference]: Start difference. First operand 71961 states and 76828 transitions. Second operand 7 states.