/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/Problem03_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:21:35,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:21:35,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:21:35,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:21:35,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:21:35,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:21:35,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:21:35,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:21:35,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:21:35,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:21:35,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:21:35,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:21:35,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:21:35,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:21:35,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:21:35,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:21:35,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:21:35,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:21:35,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:21:35,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:21:35,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:21:35,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:21:35,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:21:35,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:21:35,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:21:35,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:21:35,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:21:35,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:21:35,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:21:35,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:21:35,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:21:35,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:21:35,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:21:35,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:21:35,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:21:35,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:21:35,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:21:35,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:21:35,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:21:35,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:21:35,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:21:35,491 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 06:21:35,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:21:35,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:21:35,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:21:35,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:21:35,535 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:21:35,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:21:35,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:21:35,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:21:35,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:21:35,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:21:35,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:21:35,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:21:35,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:21:35,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:21:35,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:21:35,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:21:35,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:21:35,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:21:35,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:21:35,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:21:35,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:21:35,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:21:35,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:21:35,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:21:35,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:21:35,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:21:35,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:21:35,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:21:35,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:21:35,541 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 06:21:35,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:21:35,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:21:35,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:21:35,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:21:35,836 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:21:35,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label31.c [2020-10-13 06:21:35,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4e5e91cc/9605b121eac8458d9c9957695619b000/FLAG9e2d6d844 [2020-10-13 06:21:36,510 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:21:36,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label31.c [2020-10-13 06:21:36,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4e5e91cc/9605b121eac8458d9c9957695619b000/FLAG9e2d6d844 [2020-10-13 06:21:36,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4e5e91cc/9605b121eac8458d9c9957695619b000 [2020-10-13 06:21:36,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:21:36,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:21:36,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:21:36,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:21:36,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:21:36,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:21:36" (1/1) ... [2020-10-13 06:21:36,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:36, skipping insertion in model container [2020-10-13 06:21:36,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:21:36" (1/1) ... [2020-10-13 06:21:36,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:21:36,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:21:37,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:21:37,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:21:38,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:21:38,046 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:21:38,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38 WrapperNode [2020-10-13 06:21:38,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:21:38,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:21:38,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:21:38,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:21:38,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (1/1) ... [2020-10-13 06:21:38,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (1/1) ... [2020-10-13 06:21:38,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (1/1) ... [2020-10-13 06:21:38,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (1/1) ... [2020-10-13 06:21:38,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (1/1) ... [2020-10-13 06:21:38,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (1/1) ... [2020-10-13 06:21:38,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (1/1) ... [2020-10-13 06:21:38,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:21:38,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:21:38,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:21:38,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:21:38,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (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 06:21:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:21:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:21:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:21:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:21:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:21:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:21:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:21:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:21:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:21:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:21:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:21:40,264 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:21:40,264 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:21:40,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:21:40 BoogieIcfgContainer [2020-10-13 06:21:40,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:21:40,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:21:40,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:21:40,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:21:40,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:21:36" (1/3) ... [2020-10-13 06:21:40,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd046fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:21:40, skipping insertion in model container [2020-10-13 06:21:40,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:38" (2/3) ... [2020-10-13 06:21:40,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd046fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:21:40, skipping insertion in model container [2020-10-13 06:21:40,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:21:40" (3/3) ... [2020-10-13 06:21:40,280 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label31.c [2020-10-13 06:21:40,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:21:40,301 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:21:40,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:21:40,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:21:40,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:21:40,352 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:21:40,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:21:40,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:21:40,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:21:40,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:21:40,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:21:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:21:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 06:21:40,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:40,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:40,399 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:40,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:40,408 INFO L82 PathProgramCache]: Analyzing trace with hash -181884296, now seen corresponding path program 1 times [2020-10-13 06:21:40,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:40,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899171141] [2020-10-13 06:21:40,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 06:21:43,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:21:43,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3093 [2020-10-13 06:21:43,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:21:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:21:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:21:43,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:21:44,752 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-13 06:21:45,292 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:45,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:21:45,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:21:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:45,840 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 06:21:45,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899171141] [2020-10-13 06:21:45,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:21:45,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:21:45,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80851885] [2020-10-13 06:21:45,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:21:45,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:45,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:21:45,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:45,865 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:21:46,226 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:21:46,873 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-13 06:21:47,398 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-13 06:21:47,995 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2020-10-13 06:21:48,933 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 173 [2020-10-13 06:21:50,086 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 172 [2020-10-13 06:21:51,293 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 171 [2020-10-13 06:21:53,936 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 170 [2020-10-13 06:21:55,064 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 169 [2020-10-13 06:21:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:57,425 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:21:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:21:57,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2020-10-13 06:21:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:57,444 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:21:57,445 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:21:57,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:21:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:21:57,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:21:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:21:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:21:57,531 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 157 [2020-10-13 06:21:57,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:57,532 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:21:57,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:21:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:21:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 06:21:57,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:57,538 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:21:57,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:21:57,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:57,539 INFO L82 PathProgramCache]: Analyzing trace with hash 618001631, now seen corresponding path program 1 times [2020-10-13 06:21:57,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:57,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722741023] [2020-10-13 06:21:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:00,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:00,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 06:22:00,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2818 [2020-10-13 06:22:00,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:22:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 06:22:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-13 06:22:00,689 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:00,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:00,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:00,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:22:00,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:00,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:00,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:00,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:22:00,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:22:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:00,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722741023] [2020-10-13 06:22:00,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:00,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:22:00,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355661069] [2020-10-13 06:22:00,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:22:00,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:00,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:22:00,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:22:00,866 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:22:01,056 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:03,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:03,129 INFO L93 Difference]: Finished difference Result 838 states and 1311 transitions. [2020-10-13 06:22:03,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:22:03,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 06:22:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:03,137 INFO L225 Difference]: With dead ends: 838 [2020-10-13 06:22:03,137 INFO L226 Difference]: Without dead ends: 595 [2020-10-13 06:22:03,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:22:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-13 06:22:03,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 581. [2020-10-13 06:22:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-13 06:22:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 863 transitions. [2020-10-13 06:22:03,180 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 863 transitions. Word has length 168 [2020-10-13 06:22:03,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:03,180 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 863 transitions. [2020-10-13 06:22:03,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:22:03,181 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 863 transitions. [2020-10-13 06:22:03,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 06:22:03,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:03,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-13 06:22:03,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:22:03,185 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:03,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:03,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1811038184, now seen corresponding path program 1 times [2020-10-13 06:22:03,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:03,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161237738] [2020-10-13 06:22:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:04,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:05,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:07,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:07,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 06:22:07,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:22:07,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3835 [2020-10-13 06:22:07,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:22:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:22:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:07,235 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:07,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:07,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:07,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:22:07,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:07,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:07,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:07,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:07,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:22:07,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:22:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:07,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:22:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:07,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:22:07,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:22:07,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:22:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:22:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:07,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161237738] [2020-10-13 06:22:07,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:07,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:07,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719029628] [2020-10-13 06:22:07,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:07,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:07,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:07,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:07,549 INFO L87 Difference]: Start difference. First operand 581 states and 863 transitions. Second operand 7 states. [2020-10-13 06:22:07,752 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:08,191 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:10,635 INFO L93 Difference]: Finished difference Result 1491 states and 2338 transitions. [2020-10-13 06:22:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:10,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-13 06:22:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:10,646 INFO L225 Difference]: With dead ends: 1491 [2020-10-13 06:22:10,646 INFO L226 Difference]: Without dead ends: 1031 [2020-10-13 06:22:10,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:10,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-10-13 06:22:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1011. [2020-10-13 06:22:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-10-13 06:22:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1368 transitions. [2020-10-13 06:22:10,720 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1368 transitions. Word has length 178 [2020-10-13 06:22:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:10,721 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1368 transitions. [2020-10-13 06:22:10,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1368 transitions. [2020-10-13 06:22:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 06:22:10,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:10,728 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:22:10,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:22:10,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:10,729 INFO L82 PathProgramCache]: Analyzing trace with hash 247390227, now seen corresponding path program 1 times [2020-10-13 06:22:10,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:10,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792258955] [2020-10-13 06:22:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:11,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:11,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 06:22:11,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-13 06:22:11,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 06:22:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:11,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:11,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:11,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:11,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:22:11,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:11,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:11,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:11,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:11,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:22:11,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:22:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:11,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792258955] [2020-10-13 06:22:11,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:11,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:22:11,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112618716] [2020-10-13 06:22:11,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:22:11,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:11,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:22:11,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:22:11,957 INFO L87 Difference]: Start difference. First operand 1011 states and 1368 transitions. Second operand 6 states. [2020-10-13 06:22:12,123 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:12,385 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:15,694 INFO L93 Difference]: Finished difference Result 3613 states and 5092 transitions. [2020-10-13 06:22:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:22:15,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-10-13 06:22:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:15,711 INFO L225 Difference]: With dead ends: 3613 [2020-10-13 06:22:15,711 INFO L226 Difference]: Without dead ends: 2723 [2020-10-13 06:22:15,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:22:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2020-10-13 06:22:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2717. [2020-10-13 06:22:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2717 states. [2020-10-13 06:22:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3788 transitions. [2020-10-13 06:22:15,791 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3788 transitions. Word has length 178 [2020-10-13 06:22:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:15,792 INFO L479 AbstractCegarLoop]: Abstraction has 2717 states and 3788 transitions. [2020-10-13 06:22:15,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:22:15,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3788 transitions. [2020-10-13 06:22:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 06:22:15,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:15,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:15,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:22:15,800 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:15,801 INFO L82 PathProgramCache]: Analyzing trace with hash 965707963, now seen corresponding path program 1 times [2020-10-13 06:22:15,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:15,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664639286] [2020-10-13 06:22:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:15,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:16,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:18,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:18,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 06:22:18,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2903 [2020-10-13 06:22:18,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:22:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:22:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:18,886 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:18,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:18,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:18,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:22:18,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:18,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:18,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:18,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:18,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:22:18,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:22:18,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:18,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:22:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:22:19,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:22:19,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:22:19,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:19,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664639286] [2020-10-13 06:22:19,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:19,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:19,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659503359] [2020-10-13 06:22:19,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:19,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:19,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:19,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:19,126 INFO L87 Difference]: Start difference. First operand 2717 states and 3788 transitions. Second operand 7 states. [2020-10-13 06:22:19,266 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:22,154 INFO L93 Difference]: Finished difference Result 7092 states and 10528 transitions. [2020-10-13 06:22:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:22:22,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-13 06:22:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:22,182 INFO L225 Difference]: With dead ends: 7092 [2020-10-13 06:22:22,182 INFO L226 Difference]: Without dead ends: 4496 [2020-10-13 06:22:22,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2020-10-13 06:22:22,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4467. [2020-10-13 06:22:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4467 states. [2020-10-13 06:22:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6391 transitions. [2020-10-13 06:22:22,339 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6391 transitions. Word has length 184 [2020-10-13 06:22:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:22,339 INFO L479 AbstractCegarLoop]: Abstraction has 4467 states and 6391 transitions. [2020-10-13 06:22:22,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6391 transitions. [2020-10-13 06:22:22,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 06:22:22,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:22,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:22,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:22:22,353 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1523248001, now seen corresponding path program 1 times [2020-10-13 06:22:22,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:22,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908313379] [2020-10-13 06:22:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:22,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:25,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:25,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 06:22:25,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3474 [2020-10-13 06:22:25,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:22:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:26,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:26,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:26,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:22:26,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:26,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:22:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:22:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:26,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:26,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:22:26,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:26,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:22:26,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:22:26,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:26,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908313379] [2020-10-13 06:22:26,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:26,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:26,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860176944] [2020-10-13 06:22:26,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:26,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:26,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:26,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:26,218 INFO L87 Difference]: Start difference. First operand 4467 states and 6391 transitions. Second operand 7 states. [2020-10-13 06:22:26,367 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:27,695 INFO L93 Difference]: Finished difference Result 8758 states and 12657 transitions. [2020-10-13 06:22:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:22:27,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-13 06:22:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:27,718 INFO L225 Difference]: With dead ends: 8758 [2020-10-13 06:22:27,718 INFO L226 Difference]: Without dead ends: 4412 [2020-10-13 06:22:27,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:22:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4412 states. [2020-10-13 06:22:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4412 to 4412. [2020-10-13 06:22:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4412 states. [2020-10-13 06:22:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 6149 transitions. [2020-10-13 06:22:27,833 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 6149 transitions. Word has length 202 [2020-10-13 06:22:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:27,834 INFO L479 AbstractCegarLoop]: Abstraction has 4412 states and 6149 transitions. [2020-10-13 06:22:27,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 6149 transitions. [2020-10-13 06:22:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 06:22:27,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:27,845 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:27,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:22:27,845 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1163434486, now seen corresponding path program 1 times [2020-10-13 06:22:27,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:27,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074472775] [2020-10-13 06:22:27,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:30,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:30,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 06:22:30,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-10-13 06:22:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:22:30,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:30,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:22:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:30,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:30,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:30,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:30,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:22:30,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:30,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:22:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:30,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:30,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:22:30,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:22:30,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:22:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:30,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074472775] [2020-10-13 06:22:30,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:30,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:30,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925503207] [2020-10-13 06:22:30,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:30,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:30,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:30,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:30,679 INFO L87 Difference]: Start difference. First operand 4412 states and 6149 transitions. Second operand 7 states. [2020-10-13 06:22:30,954 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:31,955 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:33,641 INFO L93 Difference]: Finished difference Result 12776 states and 20439 transitions. [2020-10-13 06:22:33,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:22:33,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-13 06:22:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:33,694 INFO L225 Difference]: With dead ends: 12776 [2020-10-13 06:22:33,695 INFO L226 Difference]: Without dead ends: 8485 [2020-10-13 06:22:33,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:22:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8485 states. [2020-10-13 06:22:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8485 to 8258. [2020-10-13 06:22:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8258 states. [2020-10-13 06:22:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8258 states to 8258 states and 11425 transitions. [2020-10-13 06:22:34,039 INFO L78 Accepts]: Start accepts. Automaton has 8258 states and 11425 transitions. Word has length 210 [2020-10-13 06:22:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:34,040 INFO L479 AbstractCegarLoop]: Abstraction has 8258 states and 11425 transitions. [2020-10-13 06:22:34,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8258 states and 11425 transitions. [2020-10-13 06:22:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-13 06:22:34,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:34,060 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:34,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:22:34,061 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:34,061 INFO L82 PathProgramCache]: Analyzing trace with hash -547873154, now seen corresponding path program 1 times [2020-10-13 06:22:34,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:34,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112695074] [2020-10-13 06:22:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:36,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:36,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 06:22:36,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:22:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-13 06:22:36,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:36,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:36,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:36,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:22:36,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:36,940 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:36,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:36,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:36,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:22:36,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:36,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:37,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:37,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:37,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:22:37,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:37,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:22:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:37,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:37,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:22:37,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:37,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:22:37,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:22:37,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:37,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112695074] [2020-10-13 06:22:37,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:37,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:22:37,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483300117] [2020-10-13 06:22:37,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:22:37,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:37,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:22:37,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:22:37,185 INFO L87 Difference]: Start difference. First operand 8258 states and 11425 transitions. Second operand 8 states. [2020-10-13 06:22:37,316 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:37,618 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:40,931 INFO L93 Difference]: Finished difference Result 16239 states and 23068 transitions. [2020-10-13 06:22:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:22:40,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2020-10-13 06:22:40,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:40,972 INFO L225 Difference]: With dead ends: 16239 [2020-10-13 06:22:40,973 INFO L226 Difference]: Without dead ends: 8102 [2020-10-13 06:22:41,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:22:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8102 states. [2020-10-13 06:22:41,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8102 to 8041. [2020-10-13 06:22:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8041 states. [2020-10-13 06:22:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8041 states to 8041 states and 10527 transitions. [2020-10-13 06:22:41,273 INFO L78 Accepts]: Start accepts. Automaton has 8041 states and 10527 transitions. Word has length 214 [2020-10-13 06:22:41,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:41,273 INFO L479 AbstractCegarLoop]: Abstraction has 8041 states and 10527 transitions. [2020-10-13 06:22:41,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:22:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 8041 states and 10527 transitions. [2020-10-13 06:22:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-13 06:22:41,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:41,304 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:22:41,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:22:41,305 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1499268030, now seen corresponding path program 1 times [2020-10-13 06:22:41,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:41,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500835533] [2020-10-13 06:22:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:41,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:46,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 06:22:46,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:22:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 06:22:46,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 06:22:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:22:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:46,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:46,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:46,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:46,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:46,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:22:46,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:46,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:46,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:46,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:46,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:22:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:22:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:46,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:46,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:22:46,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 06:22:46,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:22:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 06:22:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:46,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:46,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:22:46,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:46,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 06:22:46,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:22:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:22:46,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500835533] [2020-10-13 06:22:46,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:46,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:46,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087411707] [2020-10-13 06:22:46,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:46,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:46,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:46,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:46,993 INFO L87 Difference]: Start difference. First operand 8041 states and 10527 transitions. Second operand 7 states. [2020-10-13 06:22:47,256 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:47,640 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:51,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:51,177 INFO L93 Difference]: Finished difference Result 28240 states and 41135 transitions. [2020-10-13 06:22:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:51,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-13 06:22:51,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:51,259 INFO L225 Difference]: With dead ends: 28240 [2020-10-13 06:22:51,260 INFO L226 Difference]: Without dead ends: 20320 [2020-10-13 06:22:51,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20320 states. [2020-10-13 06:22:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20320 to 19097. [2020-10-13 06:22:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19097 states. [2020-10-13 06:22:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19097 states to 19097 states and 24775 transitions. [2020-10-13 06:22:51,906 INFO L78 Accepts]: Start accepts. Automaton has 19097 states and 24775 transitions. Word has length 261 [2020-10-13 06:22:51,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:51,906 INFO L479 AbstractCegarLoop]: Abstraction has 19097 states and 24775 transitions. [2020-10-13 06:22:51,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:51,907 INFO L276 IsEmpty]: Start isEmpty. Operand 19097 states and 24775 transitions. [2020-10-13 06:22:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 06:22:51,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:51,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:51,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:22:51,956 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:51,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:51,956 INFO L82 PathProgramCache]: Analyzing trace with hash -991854711, now seen corresponding path program 1 times [2020-10-13 06:22:51,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:51,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785606612] [2020-10-13 06:22:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:55,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:55,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 06:22:55,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:22:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3854 [2020-10-13 06:22:55,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:22:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 06:22:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:56,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:56,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:22:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:56,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:56,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:56,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:22:56,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:22:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:56,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:22:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:22:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-13 06:22:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 06:22:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:56,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785606612] [2020-10-13 06:22:56,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:56,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:56,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113807616] [2020-10-13 06:22:56,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:56,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:56,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:56,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:56,737 INFO L87 Difference]: Start difference. First operand 19097 states and 24775 transitions. Second operand 7 states. [2020-10-13 06:22:56,869 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:22:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:59,667 INFO L93 Difference]: Finished difference Result 39653 states and 52676 transitions. [2020-10-13 06:22:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:22:59,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-13 06:22:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:59,768 INFO L225 Difference]: With dead ends: 39653 [2020-10-13 06:22:59,768 INFO L226 Difference]: Without dead ends: 26403 [2020-10-13 06:22:59,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:22:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26403 states. [2020-10-13 06:23:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26403 to 24596. [2020-10-13 06:23:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24596 states. [2020-10-13 06:23:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24596 states to 24596 states and 32160 transitions. [2020-10-13 06:23:00,386 INFO L78 Accepts]: Start accepts. Automaton has 24596 states and 32160 transitions. Word has length 280 [2020-10-13 06:23:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:00,386 INFO L479 AbstractCegarLoop]: Abstraction has 24596 states and 32160 transitions. [2020-10-13 06:23:00,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 24596 states and 32160 transitions. [2020-10-13 06:23:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 06:23:00,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:00,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:23:00,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:23:00,440 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:00,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1715809657, now seen corresponding path program 1 times [2020-10-13 06:23:00,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:00,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65026361] [2020-10-13 06:23:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:00,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-13 06:23:05,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:23:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 06:23:05,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 06:23:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:23:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,698 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:05,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:05,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:05,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:05,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:05,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:23:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 06:23:05,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 06:23:05,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:23:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:06,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:23:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 06:23:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:23:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:23:06,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65026361] [2020-10-13 06:23:06,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:06,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:06,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332769622] [2020-10-13 06:23:06,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:06,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:06,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:06,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:06,237 INFO L87 Difference]: Start difference. First operand 24596 states and 32160 transitions. Second operand 7 states. [2020-10-13 06:23:06,527 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:07,849 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:09,424 INFO L93 Difference]: Finished difference Result 47223 states and 64761 transitions. [2020-10-13 06:23:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:09,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-13 06:23:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:09,504 INFO L225 Difference]: With dead ends: 47223 [2020-10-13 06:23:09,505 INFO L226 Difference]: Without dead ends: 22748 [2020-10-13 06:23:09,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22748 states. [2020-10-13 06:23:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22748 to 21843. [2020-10-13 06:23:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21843 states. [2020-10-13 06:23:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21843 states to 21843 states and 26807 transitions. [2020-10-13 06:23:10,055 INFO L78 Accepts]: Start accepts. Automaton has 21843 states and 26807 transitions. Word has length 283 [2020-10-13 06:23:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:10,056 INFO L479 AbstractCegarLoop]: Abstraction has 21843 states and 26807 transitions. [2020-10-13 06:23:10,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 21843 states and 26807 transitions. [2020-10-13 06:23:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-13 06:23:10,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:10,076 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:23:10,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:23:10,077 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:10,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash 77358288, now seen corresponding path program 1 times [2020-10-13 06:23:10,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:10,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708582437] [2020-10-13 06:23:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-13 06:23:15,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 06:23:15,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 06:23:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:23:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:15,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:15,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:15,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:15,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:15,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:15,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:15,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:15,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:23:15,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:23:15,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:15,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:23:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:15,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:15,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:15,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:15,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 06:23:15,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:23:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:23:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:23:15,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:23:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 06:23:15,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708582437] [2020-10-13 06:23:15,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:15,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:15,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034197040] [2020-10-13 06:23:15,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:15,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:15,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:15,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:15,648 INFO L87 Difference]: Start difference. First operand 21843 states and 26807 transitions. Second operand 7 states. [2020-10-13 06:23:15,923 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:17,191 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:18,704 INFO L93 Difference]: Finished difference Result 51747 states and 67072 transitions. [2020-10-13 06:23:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:18,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-13 06:23:18,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:18,812 INFO L225 Difference]: With dead ends: 51747 [2020-10-13 06:23:18,813 INFO L226 Difference]: Without dead ends: 30041 [2020-10-13 06:23:18,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:18,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30041 states. [2020-10-13 06:23:19,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30041 to 27466. [2020-10-13 06:23:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27466 states. [2020-10-13 06:23:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27466 states to 27466 states and 33908 transitions. [2020-10-13 06:23:19,537 INFO L78 Accepts]: Start accepts. Automaton has 27466 states and 33908 transitions. Word has length 293 [2020-10-13 06:23:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:19,538 INFO L479 AbstractCegarLoop]: Abstraction has 27466 states and 33908 transitions. [2020-10-13 06:23:19,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 27466 states and 33908 transitions. [2020-10-13 06:23:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-13 06:23:19,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:19,567 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:23:19,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:23:19,567 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:19,568 INFO L82 PathProgramCache]: Analyzing trace with hash -699267904, now seen corresponding path program 1 times [2020-10-13 06:23:19,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:19,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505826391] [2020-10-13 06:23:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:19,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:19,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:21,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 06:23:24,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:23:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 06:23:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 06:23:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:23:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:23:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:24,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:24,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:23:24,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:24,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:23:24,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:23:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:23:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:24,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:24,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:23:24,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 06:23:24,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:23:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:25,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:25,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:25,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:23:25,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:23:25,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:23:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-13 06:23:25,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505826391] [2020-10-13 06:23:25,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:25,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:25,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595865090] [2020-10-13 06:23:25,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:25,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:25,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:25,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:25,192 INFO L87 Difference]: Start difference. First operand 27466 states and 33908 transitions. Second operand 7 states. [2020-10-13 06:23:25,321 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:26,499 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:27,871 INFO L93 Difference]: Finished difference Result 58128 states and 71526 transitions. [2020-10-13 06:23:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:23:27,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-13 06:23:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:27,959 INFO L225 Difference]: With dead ends: 58128 [2020-10-13 06:23:27,960 INFO L226 Difference]: Without dead ends: 30799 [2020-10-13 06:23:27,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:28,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30799 states. [2020-10-13 06:23:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30799 to 28706. [2020-10-13 06:23:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28706 states. [2020-10-13 06:23:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28706 states to 28706 states and 34980 transitions. [2020-10-13 06:23:28,761 INFO L78 Accepts]: Start accepts. Automaton has 28706 states and 34980 transitions. Word has length 303 [2020-10-13 06:23:28,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:28,761 INFO L479 AbstractCegarLoop]: Abstraction has 28706 states and 34980 transitions. [2020-10-13 06:23:28,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 28706 states and 34980 transitions. [2020-10-13 06:23:28,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 06:23:28,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:28,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:28,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:23:28,793 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:28,793 INFO L82 PathProgramCache]: Analyzing trace with hash -741739535, now seen corresponding path program 1 times [2020-10-13 06:23:28,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:28,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217427568] [2020-10-13 06:23:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:33,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:33,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 06:23:33,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:23:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 06:23:33,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 06:23:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 06:23:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:34,019 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:34,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:34,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:34,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:34,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:34,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:23:34,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:34,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:34,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:34,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:34,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:34,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:34,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:34,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:23:34,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 06:23:34,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:34,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:34,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:34,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 06:23:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:34,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:23:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:34,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:34,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:23:34,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:34,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 06:23:34,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:34,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 06:23:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:23:34,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217427568] [2020-10-13 06:23:34,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:34,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:34,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547975594] [2020-10-13 06:23:34,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:34,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:34,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:34,448 INFO L87 Difference]: Start difference. First operand 28706 states and 34980 transitions. Second operand 7 states. [2020-10-13 06:23:34,715 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:35,994 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:37,380 INFO L93 Difference]: Finished difference Result 53818 states and 68279 transitions. [2020-10-13 06:23:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:37,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-13 06:23:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:37,458 INFO L225 Difference]: With dead ends: 53818 [2020-10-13 06:23:37,458 INFO L226 Difference]: Without dead ends: 32603 [2020-10-13 06:23:37,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:37,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32603 states. [2020-10-13 06:23:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32603 to 32100. [2020-10-13 06:23:38,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32100 states. [2020-10-13 06:23:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32100 states to 32100 states and 38773 transitions. [2020-10-13 06:23:38,058 INFO L78 Accepts]: Start accepts. Automaton has 32100 states and 38773 transitions. Word has length 310 [2020-10-13 06:23:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:38,058 INFO L479 AbstractCegarLoop]: Abstraction has 32100 states and 38773 transitions. [2020-10-13 06:23:38,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 32100 states and 38773 transitions. [2020-10-13 06:23:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 06:23:38,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:38,081 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-13 06:23:38,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:23:38,081 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash -809623857, now seen corresponding path program 1 times [2020-10-13 06:23:38,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:38,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310512269] [2020-10-13 06:23:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:38,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:40,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 06:23:43,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 06:23:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 06:23:43,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:23:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 06:23:43,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:43,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:43,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:43,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:43,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:23:43,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:23:43,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:23:43,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 06:23:43,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 06:23:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:23:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:43,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:43,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 06:23:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:43,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:23:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:23:43,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:23:43,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 06:23:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 155 proven. 57 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-13 06:23:43,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310512269] [2020-10-13 06:23:43,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:43,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:43,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637600915] [2020-10-13 06:23:43,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:43,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:43,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:43,747 INFO L87 Difference]: Start difference. First operand 32100 states and 38773 transitions. Second operand 7 states. [2020-10-13 06:23:43,875 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:45,578 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:46,903 INFO L93 Difference]: Finished difference Result 64723 states and 78187 transitions. [2020-10-13 06:23:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:46,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-13 06:23:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:46,950 INFO L225 Difference]: With dead ends: 64723 [2020-10-13 06:23:46,950 INFO L226 Difference]: Without dead ends: 32756 [2020-10-13 06:23:46,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32756 states. [2020-10-13 06:23:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32756 to 32096. [2020-10-13 06:23:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32096 states. [2020-10-13 06:23:47,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32096 states to 32096 states and 38649 transitions. [2020-10-13 06:23:47,528 INFO L78 Accepts]: Start accepts. Automaton has 32096 states and 38649 transitions. Word has length 312 [2020-10-13 06:23:47,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:47,529 INFO L479 AbstractCegarLoop]: Abstraction has 32096 states and 38649 transitions. [2020-10-13 06:23:47,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 32096 states and 38649 transitions. [2020-10-13 06:23:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 06:23:47,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:47,573 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:23:47,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:23:47,573 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:47,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1869600511, now seen corresponding path program 1 times [2020-10-13 06:23:47,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:47,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759322009] [2020-10-13 06:23:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:48,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:49,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:52,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:52,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-13 06:23:52,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 06:23:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 06:23:52,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:23:52,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:23:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:52,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:52,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:52,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:52,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:52,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:52,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:52,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:53,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:53,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:23:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:23:53,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:23:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:53,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:23:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:53,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:53,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:53,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:23:53,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:23:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:23:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:53,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:53,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:23:53,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:23:53,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 06:23:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 161 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-13 06:23:53,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759322009] [2020-10-13 06:23:53,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:53,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:53,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134779957] [2020-10-13 06:23:53,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:53,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:53,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:53,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:53,475 INFO L87 Difference]: Start difference. First operand 32096 states and 38649 transitions. Second operand 7 states. [2020-10-13 06:23:53,820 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:54,860 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:23:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:56,935 INFO L93 Difference]: Finished difference Result 57952 states and 73302 transitions. [2020-10-13 06:23:56,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:56,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2020-10-13 06:23:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:57,004 INFO L225 Difference]: With dead ends: 57952 [2020-10-13 06:23:57,004 INFO L226 Difference]: Without dead ends: 33992 [2020-10-13 06:23:57,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33992 states. [2020-10-13 06:23:57,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33992 to 33372. [2020-10-13 06:23:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33372 states. [2020-10-13 06:23:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33372 states to 33372 states and 40088 transitions. [2020-10-13 06:23:57,680 INFO L78 Accepts]: Start accepts. Automaton has 33372 states and 40088 transitions. Word has length 322 [2020-10-13 06:23:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:57,680 INFO L479 AbstractCegarLoop]: Abstraction has 33372 states and 40088 transitions. [2020-10-13 06:23:57,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 33372 states and 40088 transitions. [2020-10-13 06:23:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 06:23:57,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:57,729 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:57,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:23:57,730 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:57,731 INFO L82 PathProgramCache]: Analyzing trace with hash -431736328, now seen corresponding path program 1 times [2020-10-13 06:23:57,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:57,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944932539] [2020-10-13 06:23:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:02,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:02,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-13 06:24:02,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:24:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 06:24:02,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 06:24:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:24:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:03,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:03,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:03,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:24:03,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:03,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:03,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:03,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:24:03,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:24:03,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:24:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:03,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:03,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:24:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 06:24:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:24:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:03,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 06:24:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:03,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:03,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:24:03,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:24:03,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:24:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:03,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 06:24:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:03,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:03,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:24:03,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:24:03,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 06:24:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 179 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 06:24:03,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944932539] [2020-10-13 06:24:03,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:03,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:03,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684167495] [2020-10-13 06:24:03,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:03,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:03,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:03,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:03,386 INFO L87 Difference]: Start difference. First operand 33372 states and 40088 transitions. Second operand 7 states. [2020-10-13 06:24:03,914 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:04,787 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:07,000 INFO L93 Difference]: Finished difference Result 81704 states and 111376 transitions. [2020-10-13 06:24:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:24:07,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-13 06:24:07,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:07,264 INFO L225 Difference]: With dead ends: 81704 [2020-10-13 06:24:07,265 INFO L226 Difference]: Without dead ends: 56474 [2020-10-13 06:24:08,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:24:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56474 states. [2020-10-13 06:24:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56474 to 52444. [2020-10-13 06:24:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52444 states. [2020-10-13 06:24:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52444 states to 52444 states and 62606 transitions. [2020-10-13 06:24:09,993 INFO L78 Accepts]: Start accepts. Automaton has 52444 states and 62606 transitions. Word has length 331 [2020-10-13 06:24:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:09,994 INFO L479 AbstractCegarLoop]: Abstraction has 52444 states and 62606 transitions. [2020-10-13 06:24:09,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 52444 states and 62606 transitions. [2020-10-13 06:24:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 06:24:10,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:10,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:24:10,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:24:10,042 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:10,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:10,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1185878765, now seen corresponding path program 1 times [2020-10-13 06:24:10,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:10,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361025917] [2020-10-13 06:24:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:11,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:11,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:15,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:15,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 06:24:15,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:24:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 06:24:15,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:24:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:24:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:15,274 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:15,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:15,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:15,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:15,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:15,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:15,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:24:15,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:24:15,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:24:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:15,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:24:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:15,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:15,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 06:24:15,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 06:24:15,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 06:24:15,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 06:24:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:15,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:15,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:24:15,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:24:15,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 06:24:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 185 proven. 52 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:24:16,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361025917] [2020-10-13 06:24:16,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:16,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:16,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576873818] [2020-10-13 06:24:16,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:16,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:16,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:16,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:16,054 INFO L87 Difference]: Start difference. First operand 52444 states and 62606 transitions. Second operand 7 states. [2020-10-13 06:24:16,408 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:17,319 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:24:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:19,880 INFO L93 Difference]: Finished difference Result 105506 states and 130888 transitions. [2020-10-13 06:24:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:24:19,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-13 06:24:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:20,016 INFO L225 Difference]: With dead ends: 105506 [2020-10-13 06:24:20,016 INFO L226 Difference]: Without dead ends: 61181 [2020-10-13 06:24:20,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:24:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61181 states. [2020-10-13 06:24:20,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61181 to 60181. [2020-10-13 06:24:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60181 states. [2020-10-13 06:24:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60181 states to 60181 states and 70828 transitions. [2020-10-13 06:24:20,989 INFO L78 Accepts]: Start accepts. Automaton has 60181 states and 70828 transitions. Word has length 331 [2020-10-13 06:24:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:20,989 INFO L479 AbstractCegarLoop]: Abstraction has 60181 states and 70828 transitions. [2020-10-13 06:24:20,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 60181 states and 70828 transitions. [2020-10-13 06:24:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-13 06:24:21,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:21,029 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:21,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:24:21,030 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:21,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:21,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2045953733, now seen corresponding path program 1 times [2020-10-13 06:24:21,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:21,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200636388] [2020-10-13 06:24:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:21,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:26,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:26,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 06:24:26,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 06:24:26,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:24:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-13 06:24:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:24:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:26,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:26,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:26,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:26,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:26,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:24:26,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:24:26,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:24:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:26,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:26,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:24:26,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:26,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 06:24:26,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 06:24:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:24:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 06:24:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:26,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:26,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:24:26,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:26,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:24:26,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:24:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 06:24:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:26,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:24:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:24:26,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 06:24:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 203 proven. 15 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 06:24:26,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200636388] [2020-10-13 06:24:26,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:26,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 06:24:26,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021585162] [2020-10-13 06:24:26,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 06:24:26,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:26,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 06:24:26,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:24:26,745 INFO L87 Difference]: Start difference. First operand 60181 states and 70828 transitions. Second operand 9 states. [2020-10-13 06:24:27,155 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:27,412 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:28,317 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:24:29,444 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-13 06:24:31,805 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:24:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:32,432 INFO L93 Difference]: Finished difference Result 161454 states and 190816 transitions. [2020-10-13 06:24:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 06:24:32,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2020-10-13 06:24:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:32,732 INFO L225 Difference]: With dead ends: 161454 [2020-10-13 06:24:32,733 INFO L226 Difference]: Without dead ends: 101406 [2020-10-13 06:24:32,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:24:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101406 states. [2020-10-13 06:24:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101406 to 100655. [2020-10-13 06:24:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100655 states. [2020-10-13 06:24:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100655 states to 100655 states and 118557 transitions. [2020-10-13 06:24:36,363 INFO L78 Accepts]: Start accepts. Automaton has 100655 states and 118557 transitions. Word has length 337 [2020-10-13 06:24:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:36,363 INFO L479 AbstractCegarLoop]: Abstraction has 100655 states and 118557 transitions. [2020-10-13 06:24:36,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 06:24:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 100655 states and 118557 transitions. [2020-10-13 06:24:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-13 06:24:36,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:36,414 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:36,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:24:36,414 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:36,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1607237884, now seen corresponding path program 1 times [2020-10-13 06:24:36,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:36,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429858838] [2020-10-13 06:24:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-13 06:24:41,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:41,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 06:24:41,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:24:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:24:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:24:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:41,647 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:41,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:24:41,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:41,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:24:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:24:41,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:24:41,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:24:41,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:24:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:41,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:41,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:41,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 06:24:41,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 06:24:41,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 06:24:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-13 06:24:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:42,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:42,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:24:42,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:24:42,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 06:24:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 184 proven. 54 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 06:24:42,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429858838] [2020-10-13 06:24:42,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:42,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:42,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494881179] [2020-10-13 06:24:42,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:42,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:42,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:42,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:42,130 INFO L87 Difference]: Start difference. First operand 100655 states and 118557 transitions. Second operand 7 states. [2020-10-13 06:24:42,266 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:24:43,395 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:24:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:45,488 INFO L93 Difference]: Finished difference Result 226229 states and 263780 transitions. [2020-10-13 06:24:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:45,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-13 06:24:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:45,721 INFO L225 Difference]: With dead ends: 226229 [2020-10-13 06:24:45,721 INFO L226 Difference]: Without dead ends: 132843 [2020-10-13 06:24:45,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:45,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132843 states. [2020-10-13 06:24:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132843 to 132470. [2020-10-13 06:24:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132470 states. [2020-10-13 06:24:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132470 states to 132470 states and 153202 transitions. [2020-10-13 06:24:51,173 INFO L78 Accepts]: Start accepts. Automaton has 132470 states and 153202 transitions. Word has length 350 [2020-10-13 06:24:51,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:51,173 INFO L479 AbstractCegarLoop]: Abstraction has 132470 states and 153202 transitions. [2020-10-13 06:24:51,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand 132470 states and 153202 transitions. [2020-10-13 06:24:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-13 06:24:51,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:51,238 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:24:51,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 06:24:51,238 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:51,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:51,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1891451748, now seen corresponding path program 1 times [2020-10-13 06:24:51,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:51,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235138156] [2020-10-13 06:24:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:51,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:56,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:56,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-13 06:24:56,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 06:24:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:24:56,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:24:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 06:24:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:56,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:56,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:24:56,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:56,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:56,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:56,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:24:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:56,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:56,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:24:56,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 06:24:56,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:24:56,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:56,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:24:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:56,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:56,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:24:56,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 06:24:56,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 06:24:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:24:57,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235138156] [2020-10-13 06:24:57,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:57,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:57,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136429942] [2020-10-13 06:24:57,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:57,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:57,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:57,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:57,028 INFO L87 Difference]: Start difference. First operand 132470 states and 153202 transitions. Second operand 7 states. [2020-10-13 06:24:57,295 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:58,644 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:05,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:05,630 INFO L93 Difference]: Finished difference Result 492171 states and 610543 transitions. [2020-10-13 06:25:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:25:05,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-13 06:25:05,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:06,773 INFO L225 Difference]: With dead ends: 492171 [2020-10-13 06:25:06,773 INFO L226 Difference]: Without dead ends: 359830 [2020-10-13 06:25:06,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:25:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359830 states.