/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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:25:23,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:25:23,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:25:23,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:25:23,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:25:23,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:25:23,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:25:23,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:25:23,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:25:23,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:25:23,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:25:23,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:25:23,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:25:23,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:25:23,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:25:23,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:25:23,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:25:23,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:25:23,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:25:23,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:25:23,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:25:23,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:25:23,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:25:23,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:25:23,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:25:23,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:25:23,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:25:23,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:25:23,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:25:23,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:25:23,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:25:23,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:25:23,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:25:23,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:25:23,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:25:23,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:25:23,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:25:23,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:25:23,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:25:23,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:25:23,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:25:23,492 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 06:25:23,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:25:23,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:25:23,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:25:23,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:25:23,527 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:25:23,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:25:23,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:25:23,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:25:23,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:25:23,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:25:23,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:25:23,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:25:23,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:25:23,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:25:23,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:25:23,529 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:25:23,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:25:23,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:25:23,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:25:23,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:25:23,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:25:23,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:23,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:25:23,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:25:23,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:25:23,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:25:23,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:25:23,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:25:23,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:25:23,532 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 06:25:23,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:25:23,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:25:23,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:25:23,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:25:23,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:25:23,841 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label49.c [2020-10-13 06:25:23,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b29880225/96b87ff9c7904cac9be4b0e53fa53f36/FLAG7eb1bc5d9 [2020-10-13 06:25:24,589 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:25:24,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label49.c [2020-10-13 06:25:24,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b29880225/96b87ff9c7904cac9be4b0e53fa53f36/FLAG7eb1bc5d9 [2020-10-13 06:25:24,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b29880225/96b87ff9c7904cac9be4b0e53fa53f36 [2020-10-13 06:25:24,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:25:24,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:25:24,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:24,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:25:24,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:25:24,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24, skipping insertion in model container [2020-10-13 06:25:24,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:25:24,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:25:25,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:25,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:25:26,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:26,062 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:25:26,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26 WrapperNode [2020-10-13 06:25:26,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:26,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:25:26,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:25:26,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:25:26,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (1/1) ... [2020-10-13 06:25:26,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (1/1) ... [2020-10-13 06:25:26,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (1/1) ... [2020-10-13 06:25:26,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (1/1) ... [2020-10-13 06:25:26,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (1/1) ... [2020-10-13 06:25:26,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (1/1) ... [2020-10-13 06:25:26,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (1/1) ... [2020-10-13 06:25:26,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:25:26,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:25:26,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:25:26,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:25:26,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (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 06:25:26,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:25:26,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:25:26,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:25:26,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:25:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:25:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:25:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:25:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:25:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:25:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:25:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:25:28,336 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:25:28,336 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:25:28,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:28 BoogieIcfgContainer [2020-10-13 06:25:28,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:25:28,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:25:28,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:25:28,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:25:28,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:25:24" (1/3) ... [2020-10-13 06:25:28,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f05413f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:28, skipping insertion in model container [2020-10-13 06:25:28,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:26" (2/3) ... [2020-10-13 06:25:28,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f05413f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:28, skipping insertion in model container [2020-10-13 06:25:28,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:28" (3/3) ... [2020-10-13 06:25:28,352 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label49.c [2020-10-13 06:25:28,363 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:25:28,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:25:28,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:25:28,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:25:28,412 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:25:28,412 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:25:28,412 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:25:28,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:25:28,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:25:28,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:25:28,413 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:25:28,441 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:25:28,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 06:25:28,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:28,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:28,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:28,465 INFO L82 PathProgramCache]: Analyzing trace with hash 476549733, now seen corresponding path program 1 times [2020-10-13 06:25:28,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:28,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463323710] [2020-10-13 06:25:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:32,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:32,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 06:25:32,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3431 [2020-10-13 06:25:32,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:25:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:25:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:25:33,450 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-10-13 06:25:33,735 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-13 06:25:33,987 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-13 06:25:34,193 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-13 06:25:34,475 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:34,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:34,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:34,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:34,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:25:34,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:35,087 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 06:25:35,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463323710] [2020-10-13 06:25:35,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:35,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:25:35,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323449350] [2020-10-13 06:25:35,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:25:35,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:35,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:25:35,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:25:35,115 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:25:35,545 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:25:36,246 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-13 06:25:36,908 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-13 06:25:37,643 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 174 [2020-10-13 06:25:38,870 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 195 DAG size of output: 173 [2020-10-13 06:25:40,258 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 195 DAG size of output: 172 [2020-10-13 06:25:41,759 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 198 DAG size of output: 171 [2020-10-13 06:25:45,043 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-13 06:25:46,311 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 201 DAG size of output: 169 [2020-10-13 06:25:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:48,968 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:25:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:25:48,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 174 [2020-10-13 06:25:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:48,987 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:25:48,988 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:25:48,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:25:49,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:25:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:25:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:25:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:25:49,075 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 174 [2020-10-13 06:25:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:49,076 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:25:49,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:25:49,077 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:25:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-13 06:25:49,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:49,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:49,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:25:49,083 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:49,084 INFO L82 PathProgramCache]: Analyzing trace with hash -563510562, now seen corresponding path program 1 times [2020-10-13 06:25:49,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:49,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616880348] [2020-10-13 06:25:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:51,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:54,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:54,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 06:25:54,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 06:25:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:25:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:25:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:55,272 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 39 [2020-10-13 06:25:55,635 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-13 06:25:55,918 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2020-10-13 06:25:56,412 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 95 [2020-10-13 06:25:56,870 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 93 [2020-10-13 06:25:57,265 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 80 [2020-10-13 06:25:57,618 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 69 [2020-10-13 06:25:57,882 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 53 [2020-10-13 06:25:58,055 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:58,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:58,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:25:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:58,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:58,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:58,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 06:25:58,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:25:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:25:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:59,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616880348] [2020-10-13 06:25:59,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:59,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 06:25:59,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600306321] [2020-10-13 06:25:59,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:25:59,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:59,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:25:59,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:25:59,432 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 17 states. [2020-10-13 06:25:59,777 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 06:26:00,602 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 95 [2020-10-13 06:26:01,020 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-10-13 06:26:01,534 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 101 [2020-10-13 06:26:02,439 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 179 [2020-10-13 06:26:03,466 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 199 [2020-10-13 06:26:04,749 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 237 DAG size of output: 196 [2020-10-13 06:26:05,349 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-13 06:26:07,321 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 240 DAG size of output: 193 [2020-10-13 06:26:10,408 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 241 DAG size of output: 190 [2020-10-13 06:26:13,964 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 187 [2020-10-13 06:26:15,534 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 242 DAG size of output: 185 [2020-10-13 06:26:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:17,759 INFO L93 Difference]: Finished difference Result 758 states and 1214 transitions. [2020-10-13 06:26:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 06:26:17,760 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 185 [2020-10-13 06:26:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:17,767 INFO L225 Difference]: With dead ends: 758 [2020-10-13 06:26:17,767 INFO L226 Difference]: Without dead ends: 515 [2020-10-13 06:26:17,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2020-10-13 06:26:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-13 06:26:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 509. [2020-10-13 06:26:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-13 06:26:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-13 06:26:17,807 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 185 [2020-10-13 06:26:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:17,807 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-13 06:26:17,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:26:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-13 06:26:17,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-13 06:26:17,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:17,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:17,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:26:17,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash -642390486, now seen corresponding path program 1 times [2020-10-13 06:26:17,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:17,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818011136] [2020-10-13 06:26:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:19,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:19,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-13 06:26:19,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1743 [2020-10-13 06:26:19,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-13 06:26:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:19,897 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:19,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:19,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:19,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:19,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:20,060 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:26:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:20,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:20,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 06:26:20,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:20,252 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 06:26:20,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818011136] [2020-10-13 06:26:20,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:20,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:20,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926014337] [2020-10-13 06:26:20,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:20,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:20,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:20,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:20,268 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 5 states. [2020-10-13 06:26:20,534 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:23,455 INFO L93 Difference]: Finished difference Result 986 states and 1468 transitions. [2020-10-13 06:26:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:23,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-13 06:26:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:23,463 INFO L225 Difference]: With dead ends: 986 [2020-10-13 06:26:23,463 INFO L226 Difference]: Without dead ends: 743 [2020-10-13 06:26:23,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-10-13 06:26:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 729. [2020-10-13 06:26:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-13 06:26:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1025 transitions. [2020-10-13 06:26:23,534 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1025 transitions. Word has length 195 [2020-10-13 06:26:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:23,536 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 1025 transitions. [2020-10-13 06:26:23,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1025 transitions. [2020-10-13 06:26:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 06:26:23,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:23,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:23,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:26:23,543 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:23,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1536552739, now seen corresponding path program 1 times [2020-10-13 06:26:23,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:23,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203683242] [2020-10-13 06:26:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:27,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:27,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 06:26:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3575 [2020-10-13 06:26:27,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:26:27,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:27,347 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:27,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:27,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:27,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:27,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:27,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:27,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:27,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:27,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:26:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:27,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:27,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:26:27,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:27,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 06:26:27,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:26:27,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:27,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203683242] [2020-10-13 06:26:27,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:27,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:27,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975209784] [2020-10-13 06:26:27,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:27,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:27,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:27,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:27,678 INFO L87 Difference]: Start difference. First operand 729 states and 1025 transitions. Second operand 7 states. [2020-10-13 06:26:28,058 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:28,529 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:31,523 INFO L93 Difference]: Finished difference Result 1675 states and 2696 transitions. [2020-10-13 06:26:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:31,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-13 06:26:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:31,539 INFO L225 Difference]: With dead ends: 1675 [2020-10-13 06:26:31,539 INFO L226 Difference]: Without dead ends: 1212 [2020-10-13 06:26:31,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-13 06:26:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1156. [2020-10-13 06:26:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-10-13 06:26:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1545 transitions. [2020-10-13 06:26:31,625 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1545 transitions. Word has length 204 [2020-10-13 06:26:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:31,626 INFO L479 AbstractCegarLoop]: Abstraction has 1156 states and 1545 transitions. [2020-10-13 06:26:31,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1545 transitions. [2020-10-13 06:26:31,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 06:26:31,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:31,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:31,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:26:31,634 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:31,639 INFO L82 PathProgramCache]: Analyzing trace with hash -320275392, now seen corresponding path program 1 times [2020-10-13 06:26:31,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:31,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741048381] [2020-10-13 06:26:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:36,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:36,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 06:26:36,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:26:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4500 [2020-10-13 06:26:36,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:36,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:36,361 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:36,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:36,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:36,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:36,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:36,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:36,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:36,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:36,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:26:36,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:36,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:36,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:36,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:36,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:36,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:36,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:36,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:36,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:26:36,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:36,643 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 06:26:36,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741048381] [2020-10-13 06:26:36,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:36,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:36,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601897184] [2020-10-13 06:26:36,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:36,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:36,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:36,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:36,646 INFO L87 Difference]: Start difference. First operand 1156 states and 1545 transitions. Second operand 7 states. [2020-10-13 06:26:36,804 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:38,650 INFO L93 Difference]: Finished difference Result 2023 states and 2795 transitions. [2020-10-13 06:26:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:26:38,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-13 06:26:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:38,666 INFO L225 Difference]: With dead ends: 2023 [2020-10-13 06:26:38,666 INFO L226 Difference]: Without dead ends: 1133 [2020-10-13 06:26:38,670 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 06:26:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2020-10-13 06:26:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2020-10-13 06:26:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-10-13 06:26:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1454 transitions. [2020-10-13 06:26:38,713 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1454 transitions. Word has length 219 [2020-10-13 06:26:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:38,713 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1454 transitions. [2020-10-13 06:26:38,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1454 transitions. [2020-10-13 06:26:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-13 06:26:38,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:38,719 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, 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] [2020-10-13 06:26:38,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:26:38,720 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:38,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1744618066, now seen corresponding path program 1 times [2020-10-13 06:26:38,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:38,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958385239] [2020-10-13 06:26:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:42,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:42,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 06:26:42,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3572 [2020-10-13 06:26:42,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:26:42,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:42,556 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:42,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:42,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:42,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:42,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:42,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:42,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:42,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:42,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:42,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:42,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:42,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:26:42,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:42,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:42,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:42,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:42,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:42,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 06:26:42,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:26:42,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:42,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958385239] [2020-10-13 06:26:42,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:42,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:42,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776721305] [2020-10-13 06:26:42,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:42,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:42,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:42,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:42,936 INFO L87 Difference]: Start difference. First operand 1133 states and 1454 transitions. Second operand 7 states. [2020-10-13 06:26:43,287 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:44,426 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:26:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:46,290 INFO L93 Difference]: Finished difference Result 2959 states and 4337 transitions. [2020-10-13 06:26:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:46,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-13 06:26:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:46,306 INFO L225 Difference]: With dead ends: 2959 [2020-10-13 06:26:46,307 INFO L226 Difference]: Without dead ends: 2092 [2020-10-13 06:26:46,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 06:26:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2020-10-13 06:26:46,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2016. [2020-10-13 06:26:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2016 states. [2020-10-13 06:26:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2547 transitions. [2020-10-13 06:26:46,384 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2547 transitions. Word has length 240 [2020-10-13 06:26:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:46,384 INFO L479 AbstractCegarLoop]: Abstraction has 2016 states and 2547 transitions. [2020-10-13 06:26:46,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2547 transitions. [2020-10-13 06:26:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-13 06:26:46,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:46,393 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, 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] [2020-10-13 06:26:46,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:26:46,393 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:46,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1960340938, now seen corresponding path program 1 times [2020-10-13 06:26:46,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:46,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406654205] [2020-10-13 06:26:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:51,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-13 06:26:51,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 06:26:51,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:51,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 06:26:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:51,712 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:51,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:51,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:51,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:51,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:26:51,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:51,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:51,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:51,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:51,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:26:51,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:51,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:26:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:51,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:51,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 06:26:51,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:26:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 06:26:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:51,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:26:51,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:26:51,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:26:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:52,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 06:26:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:52,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:52,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:52,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:26:52,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 06:26:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 06:26:52,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406654205] [2020-10-13 06:26:52,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:52,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:52,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879602348] [2020-10-13 06:26:52,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:52,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:52,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:52,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:52,117 INFO L87 Difference]: Start difference. First operand 2016 states and 2547 transitions. Second operand 7 states. [2020-10-13 06:26:52,295 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:53,265 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:55,148 INFO L93 Difference]: Finished difference Result 4640 states and 6140 transitions. [2020-10-13 06:26:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:55,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-13 06:26:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:55,161 INFO L225 Difference]: With dead ends: 4640 [2020-10-13 06:26:55,161 INFO L226 Difference]: Without dead ends: 2890 [2020-10-13 06:26:55,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:26:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-10-13 06:26:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2884. [2020-10-13 06:26:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2884 states. [2020-10-13 06:26:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 3552 transitions. [2020-10-13 06:26:55,240 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 3552 transitions. Word has length 272 [2020-10-13 06:26:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:55,240 INFO L479 AbstractCegarLoop]: Abstraction has 2884 states and 3552 transitions. [2020-10-13 06:26:55,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:55,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 3552 transitions. [2020-10-13 06:26:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-13 06:26:55,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:55,250 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:55,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:26:55,251 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:55,251 INFO L82 PathProgramCache]: Analyzing trace with hash -305978743, now seen corresponding path program 1 times [2020-10-13 06:26:55,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:55,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707416047] [2020-10-13 06:26:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:55,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-13 06:27:00,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-13 06:27:00,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 06:27:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:27:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,580 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:00,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:27:00,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:27:00,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:27:00,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:27:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:00,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:27:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:00,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 06:27:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:00,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:27:00,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:00,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:00,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 06:27:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:00,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:27:00,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:00,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-13 06:27:00,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707416047] [2020-10-13 06:27:00,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:00,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:00,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432387324] [2020-10-13 06:27:00,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:00,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:00,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:00,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:00,922 INFO L87 Difference]: Start difference. First operand 2884 states and 3552 transitions. Second operand 7 states. [2020-10-13 06:27:01,186 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:01,688 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:06,292 INFO L93 Difference]: Finished difference Result 10895 states and 14669 transitions. [2020-10-13 06:27:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:06,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-13 06:27:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:06,335 INFO L225 Difference]: With dead ends: 10895 [2020-10-13 06:27:06,335 INFO L226 Difference]: Without dead ends: 8277 [2020-10-13 06:27:06,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2020-10-13 06:27:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 8269. [2020-10-13 06:27:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8269 states. [2020-10-13 06:27:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8269 states to 8269 states and 11127 transitions. [2020-10-13 06:27:06,611 INFO L78 Accepts]: Start accepts. Automaton has 8269 states and 11127 transitions. Word has length 278 [2020-10-13 06:27:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:06,611 INFO L479 AbstractCegarLoop]: Abstraction has 8269 states and 11127 transitions. [2020-10-13 06:27:06,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:06,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8269 states and 11127 transitions. [2020-10-13 06:27:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 06:27:06,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:06,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:27:06,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:27:06,653 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:06,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash -408035257, now seen corresponding path program 1 times [2020-10-13 06:27:06,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:06,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795437234] [2020-10-13 06:27:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:06,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:10,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-13 06:27:10,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3610 [2020-10-13 06:27:10,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:27:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-13 06:27:10,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:10,593 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:10,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:10,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:10,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:27:10,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:27:10,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:27:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 102 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:27:10,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795437234] [2020-10-13 06:27:10,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:10,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:27:10,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446700072] [2020-10-13 06:27:10,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:27:10,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:27:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:27:10,917 INFO L87 Difference]: Start difference. First operand 8269 states and 11127 transitions. Second operand 5 states. [2020-10-13 06:27:11,082 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:13,786 INFO L93 Difference]: Finished difference Result 23979 states and 33188 transitions. [2020-10-13 06:27:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:27:13,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-13 06:27:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:13,872 INFO L225 Difference]: With dead ends: 23979 [2020-10-13 06:27:13,872 INFO L226 Difference]: Without dead ends: 15976 [2020-10-13 06:27:13,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:27:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15976 states. [2020-10-13 06:27:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15976 to 15967. [2020-10-13 06:27:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15967 states. [2020-10-13 06:27:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15967 states to 15967 states and 21448 transitions. [2020-10-13 06:27:14,466 INFO L78 Accepts]: Start accepts. Automaton has 15967 states and 21448 transitions. Word has length 280 [2020-10-13 06:27:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:14,467 INFO L479 AbstractCegarLoop]: Abstraction has 15967 states and 21448 transitions. [2020-10-13 06:27:14,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:27:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 15967 states and 21448 transitions. [2020-10-13 06:27:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 06:27:14,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:14,535 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, 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] [2020-10-13 06:27:14,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:27:14,535 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1053017007, now seen corresponding path program 1 times [2020-10-13 06:27:14,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:14,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913866256] [2020-10-13 06:27:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:14,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:16,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:19,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-13 06:27:19,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:19,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 06:27:19,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 06:27:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:27:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:19,809 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:19,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:19,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:19,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:27:19,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:19,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:27:19,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:19,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:27:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:19,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:19,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:27:19,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:27:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 06:27:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:20,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:27:20,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:27:20,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:27:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 06:27:20,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913866256] [2020-10-13 06:27:20,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:20,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:20,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135472161] [2020-10-13 06:27:20,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:20,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:20,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:20,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:20,206 INFO L87 Difference]: Start difference. First operand 15967 states and 21448 transitions. Second operand 7 states. [2020-10-13 06:27:20,564 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:21,939 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:23,995 INFO L93 Difference]: Finished difference Result 44091 states and 64763 transitions. [2020-10-13 06:27:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:23,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-13 06:27:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:24,158 INFO L225 Difference]: With dead ends: 44091 [2020-10-13 06:27:24,158 INFO L226 Difference]: Without dead ends: 28390 [2020-10-13 06:27:24,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 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 06:27:24,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28390 states. [2020-10-13 06:27:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28390 to 26482. [2020-10-13 06:27:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26482 states. [2020-10-13 06:27:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26482 states to 26482 states and 34506 transitions. [2020-10-13 06:27:25,095 INFO L78 Accepts]: Start accepts. Automaton has 26482 states and 34506 transitions. Word has length 285 [2020-10-13 06:27:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:25,095 INFO L479 AbstractCegarLoop]: Abstraction has 26482 states and 34506 transitions. [2020-10-13 06:27:25,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 26482 states and 34506 transitions. [2020-10-13 06:27:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-13 06:27:25,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:25,188 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:25,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:27:25,190 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:25,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1400842229, now seen corresponding path program 1 times [2020-10-13 06:27:25,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:25,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123663970] [2020-10-13 06:27:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:30,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:30,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 06:27:30,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:27:30,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 06:27:30,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:27:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:27:30,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:30,501 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:30,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:30,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:30,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:27:30,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:30,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:30,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:30,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:30,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:30,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:30,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:30,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:27:30,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-13 06:27:30,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:27:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:30,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:27:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:30,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:30,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:30,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:30,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:30,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:27:30,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:30,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:30,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:30,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:30,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:27:31,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123663970] [2020-10-13 06:27:31,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:31,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:31,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634966851] [2020-10-13 06:27:31,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:31,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:31,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:31,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:31,025 INFO L87 Difference]: Start difference. First operand 26482 states and 34506 transitions. Second operand 7 states. [2020-10-13 06:27:31,939 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:32,571 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:34,882 INFO L93 Difference]: Finished difference Result 53172 states and 71409 transitions. [2020-10-13 06:27:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:34,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-13 06:27:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:34,995 INFO L225 Difference]: With dead ends: 53172 [2020-10-13 06:27:34,995 INFO L226 Difference]: Without dead ends: 26956 [2020-10-13 06:27:35,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:35,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26956 states. [2020-10-13 06:27:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26956 to 25234. [2020-10-13 06:27:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25234 states. [2020-10-13 06:27:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25234 states to 25234 states and 32395 transitions. [2020-10-13 06:27:35,744 INFO L78 Accepts]: Start accepts. Automaton has 25234 states and 32395 transitions. Word has length 323 [2020-10-13 06:27:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:35,745 INFO L479 AbstractCegarLoop]: Abstraction has 25234 states and 32395 transitions. [2020-10-13 06:27:35,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 25234 states and 32395 transitions. [2020-10-13 06:27:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-13 06:27:35,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:35,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:35,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:27:35,803 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:35,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1854768384, now seen corresponding path program 1 times [2020-10-13 06:27:35,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:35,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398848201] [2020-10-13 06:27:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:38,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-13 06:27:41,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:27:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 06:27:41,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:27:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:27:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,216 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:41,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:41,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:27:41,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:41,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,347 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:27:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:27:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:27:41,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:27:41,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:27:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:41,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 06:27:41,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:41,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 06:27:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:27:41,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 06:27:41,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 06:27:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 183 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:27:41,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398848201] [2020-10-13 06:27:41,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:41,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:41,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779295125] [2020-10-13 06:27:41,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:41,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:41,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:41,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:41,858 INFO L87 Difference]: Start difference. First operand 25234 states and 32395 transitions. Second operand 7 states. [2020-10-13 06:27:42,214 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:43,528 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:45,803 INFO L93 Difference]: Finished difference Result 54106 states and 75242 transitions. [2020-10-13 06:27:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:45,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-13 06:27:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:45,953 INFO L225 Difference]: With dead ends: 54106 [2020-10-13 06:27:45,953 INFO L226 Difference]: Without dead ends: 29138 [2020-10-13 06:27:46,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 06:27:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29138 states. [2020-10-13 06:27:46,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29138 to 28142. [2020-10-13 06:27:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28142 states. [2020-10-13 06:27:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28142 states to 28142 states and 35689 transitions. [2020-10-13 06:27:46,861 INFO L78 Accepts]: Start accepts. Automaton has 28142 states and 35689 transitions. Word has length 351 [2020-10-13 06:27:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:46,861 INFO L479 AbstractCegarLoop]: Abstraction has 28142 states and 35689 transitions. [2020-10-13 06:27:46,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 28142 states and 35689 transitions. [2020-10-13 06:27:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-13 06:27:46,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:46,920 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:46,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:27:46,920 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:46,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:46,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1100184156, now seen corresponding path program 1 times [2020-10-13 06:27:46,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:46,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960288058] [2020-10-13 06:27:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:47,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:51,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:51,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-13 06:27:51,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 06:27:51,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:51,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:27:51,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:27:51,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:27:51,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:52,198 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:52,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:52,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:52,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:27:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:52,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:52,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:52,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:27:52,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 06:27:52,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:27:52,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:52,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:27:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:52,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:52,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:27:52,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:52,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 06:27:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:52,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:52,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 06:27:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:52,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:52,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:27:52,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 06:27:52,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 06:27:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 175 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 06:27:52,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960288058] [2020-10-13 06:27:52,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:52,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:52,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000569101] [2020-10-13 06:27:52,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:52,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:52,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:52,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:52,788 INFO L87 Difference]: Start difference. First operand 28142 states and 35689 transitions. Second operand 7 states. [2020-10-13 06:27:52,953 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:54,235 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:56,300 INFO L93 Difference]: Finished difference Result 63619 states and 79825 transitions. [2020-10-13 06:27:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:56,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 360 [2020-10-13 06:27:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:56,426 INFO L225 Difference]: With dead ends: 63619 [2020-10-13 06:27:56,427 INFO L226 Difference]: Without dead ends: 35895 [2020-10-13 06:27:56,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35895 states. [2020-10-13 06:27:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35895 to 35845. [2020-10-13 06:27:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35845 states. [2020-10-13 06:27:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35845 states to 35845 states and 45286 transitions. [2020-10-13 06:27:57,261 INFO L78 Accepts]: Start accepts. Automaton has 35845 states and 45286 transitions. Word has length 360 [2020-10-13 06:27:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:57,261 INFO L479 AbstractCegarLoop]: Abstraction has 35845 states and 45286 transitions. [2020-10-13 06:27:57,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 35845 states and 45286 transitions. [2020-10-13 06:27:57,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-13 06:27:57,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:57,605 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:57,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:27:57,605 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:57,606 INFO L82 PathProgramCache]: Analyzing trace with hash -280939036, now seen corresponding path program 1 times [2020-10-13 06:27:57,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:57,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272023110] [2020-10-13 06:27:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:57,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:02,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:02,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-13 06:28:02,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:28:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 06:28:02,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:28:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:28:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:02,868 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:02,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:02,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:02,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:02,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:02,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:03,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:03,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:28:03,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:28:03,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:28:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:28:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:03,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:03,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:28:03,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:03,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:28:03,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:28:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:03,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:28:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:03,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:03,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:03,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:28:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 06:28:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 06:28:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 197 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:28:03,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272023110] [2020-10-13 06:28:03,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:03,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:03,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928154747] [2020-10-13 06:28:03,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:03,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:03,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:03,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:03,306 INFO L87 Difference]: Start difference. First operand 35845 states and 45286 transitions. Second operand 7 states. [2020-10-13 06:28:03,621 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:04,801 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:07,408 INFO L93 Difference]: Finished difference Result 80218 states and 102177 transitions. [2020-10-13 06:28:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:07,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-13 06:28:07,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:07,563 INFO L225 Difference]: With dead ends: 80218 [2020-10-13 06:28:07,563 INFO L226 Difference]: Without dead ends: 44639 [2020-10-13 06:28:07,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:07,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44639 states. [2020-10-13 06:28:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44639 to 44581. [2020-10-13 06:28:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44581 states. [2020-10-13 06:28:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44581 states to 44581 states and 55418 transitions. [2020-10-13 06:28:08,623 INFO L78 Accepts]: Start accepts. Automaton has 44581 states and 55418 transitions. Word has length 365 [2020-10-13 06:28:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:08,624 INFO L479 AbstractCegarLoop]: Abstraction has 44581 states and 55418 transitions. [2020-10-13 06:28:08,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 44581 states and 55418 transitions. [2020-10-13 06:28:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-13 06:28:08,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:08,703 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:28:08,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:28:08,704 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:08,704 INFO L82 PathProgramCache]: Analyzing trace with hash 781112213, now seen corresponding path program 1 times [2020-10-13 06:28:08,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:08,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822084315] [2020-10-13 06:28:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:08,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:09,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:13,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:13,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 06:28:13,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 06:28:13,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:28:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:28:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:13,998 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:13,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:14,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:14,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:14,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:14,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:14,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:14,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:14,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:28:14,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:28:14,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:28:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:14,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:28:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:14,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:14,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:28:14,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-13 06:28:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:28:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:14,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 06:28:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:14,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:14,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:28:14,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:14,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:28:14,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:14,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:28:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:14,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 206 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:28:14,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822084315] [2020-10-13 06:28:14,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:14,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:14,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606164514] [2020-10-13 06:28:14,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:14,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:14,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:14,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:14,666 INFO L87 Difference]: Start difference. First operand 44581 states and 55418 transitions. Second operand 7 states. [2020-10-13 06:28:15,014 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:15,985 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:28:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:19,399 INFO L93 Difference]: Finished difference Result 102743 states and 128448 transitions. [2020-10-13 06:28:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:19,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-13 06:28:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:19,576 INFO L225 Difference]: With dead ends: 102743 [2020-10-13 06:28:19,577 INFO L226 Difference]: Without dead ends: 58428 [2020-10-13 06:28:19,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58428 states. [2020-10-13 06:28:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58428 to 58124. [2020-10-13 06:28:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58124 states. [2020-10-13 06:28:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58124 states to 58124 states and 70788 transitions. [2020-10-13 06:28:21,097 INFO L78 Accepts]: Start accepts. Automaton has 58124 states and 70788 transitions. Word has length 369 [2020-10-13 06:28:21,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:21,098 INFO L479 AbstractCegarLoop]: Abstraction has 58124 states and 70788 transitions. [2020-10-13 06:28:21,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 58124 states and 70788 transitions. [2020-10-13 06:28:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-13 06:28:21,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:21,196 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:21,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:28:21,196 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:21,197 INFO L82 PathProgramCache]: Analyzing trace with hash -341697159, now seen corresponding path program 1 times [2020-10-13 06:28:21,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:21,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038089824] [2020-10-13 06:28:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:26,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-13 06:28:26,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:28:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 06:28:26,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:28:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 06:28:26,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:26,522 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:26,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:26,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:26,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:26,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:26,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:26,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:28:26,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:28:26,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:28:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:28:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:26,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:26,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:26,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:28:26,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:26,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 06:28:26,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:26,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:26,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:28:26,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:27,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-13 06:28:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:27,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:27,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:28:27,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:28:27,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:27,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:28:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:27,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 234 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:28:27,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038089824] [2020-10-13 06:28:27,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:27,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:27,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983169592] [2020-10-13 06:28:27,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:27,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:27,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:27,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:27,393 INFO L87 Difference]: Start difference. First operand 58124 states and 70788 transitions. Second operand 7 states. [2020-10-13 06:28:27,565 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:31,358 INFO L93 Difference]: Finished difference Result 142139 states and 172614 transitions. [2020-10-13 06:28:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:28:31,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-13 06:28:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:31,589 INFO L225 Difference]: With dead ends: 142139 [2020-10-13 06:28:31,589 INFO L226 Difference]: Without dead ends: 84502 [2020-10-13 06:28:31,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:28:31,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84502 states. [2020-10-13 06:28:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84502 to 83995. [2020-10-13 06:28:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83995 states. [2020-10-13 06:28:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83995 states to 83995 states and 101494 transitions. [2020-10-13 06:28:33,749 INFO L78 Accepts]: Start accepts. Automaton has 83995 states and 101494 transitions. Word has length 383 [2020-10-13 06:28:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:33,750 INFO L479 AbstractCegarLoop]: Abstraction has 83995 states and 101494 transitions. [2020-10-13 06:28:33,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:33,750 INFO L276 IsEmpty]: Start isEmpty. Operand 83995 states and 101494 transitions. [2020-10-13 06:28:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-13 06:28:33,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:33,944 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:28:33,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:28:33,945 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:33,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1079641791, now seen corresponding path program 1 times [2020-10-13 06:28:33,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:33,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173217735] [2020-10-13 06:28:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-13 06:28:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 06:28:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:28:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:28:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:28:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:39,389 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:39,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:39,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:39,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:39,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:28:39,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:28:39,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:39,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:39,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:39,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:28:39,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:28:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:39,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:39,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:39,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:28:39,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 06:28:39,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:28:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 06:28:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:39,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:39,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:39,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 06:28:39,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 06:28:39,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 06:28:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-13 06:28:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:39,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:39,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 06:28:39,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 06:28:39,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 06:28:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 282 proven. 72 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 06:28:41,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173217735] [2020-10-13 06:28:41,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:41,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 06:28:41,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065969415] [2020-10-13 06:28:41,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 06:28:41,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:41,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 06:28:41,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:28:41,824 INFO L87 Difference]: Start difference. First operand 83995 states and 101494 transitions. Second operand 9 states. [2020-10-13 06:28:41,995 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:28:43,631 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:44,756 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:28:47,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:47,533 INFO L93 Difference]: Finished difference Result 208809 states and 257110 transitions. [2020-10-13 06:28:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 06:28:47,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 461 [2020-10-13 06:28:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:47,885 INFO L225 Difference]: With dead ends: 208809 [2020-10-13 06:28:47,886 INFO L226 Difference]: Without dead ends: 125301 [2020-10-13 06:28:48,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:28:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125301 states. [2020-10-13 06:28:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125301 to 121026. [2020-10-13 06:28:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121026 states. [2020-10-13 06:28:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121026 states to 121026 states and 146453 transitions. [2020-10-13 06:28:50,478 INFO L78 Accepts]: Start accepts. Automaton has 121026 states and 146453 transitions. Word has length 461 [2020-10-13 06:28:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:50,479 INFO L479 AbstractCegarLoop]: Abstraction has 121026 states and 146453 transitions. [2020-10-13 06:28:50,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 06:28:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 121026 states and 146453 transitions. [2020-10-13 06:28:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-13 06:28:50,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:50,683 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:28:50,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:28:50,684 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash -530712280, now seen corresponding path program 1 times [2020-10-13 06:28:50,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:50,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875198595] [2020-10-13 06:28:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking...