/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=BIGGEST --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/Problem11_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:13:14,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:13:14,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:13:14,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:13:14,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:13:14,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:13:14,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:13:14,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:13:14,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:13:14,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:13:14,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:13:14,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:13:14,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:13:14,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:13:14,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:13:14,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:13:14,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:13:14,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:13:14,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:13:14,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:13:14,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:13:14,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:13:14,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:13:14,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:13:14,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:13:14,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:13:14,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:13:14,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:13:14,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:13:14,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:13:14,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:13:14,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:13:14,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:13:14,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:13:14,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:13:14,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:13:14,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:13:14,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:13:14,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:13:14,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:13:14,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:13:14,417 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 [2020-10-12 13:13:14,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:13:14,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:13:14,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:13:14,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:13:14,441 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:13:14,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:13:14,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:13:14,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:13:14,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:13:14,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:13:14,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:13:14,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:13:14,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:13:14,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:13:14,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:13:14,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:13:14,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:13:14,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:13:14,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:13:14,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:13:14,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:13:14,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:13:14,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:13:14,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:13:14,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:13:14,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:13:14,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:13:14,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:13:14,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:13:14,447 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:13:14,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:13:14,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:13:14,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:13:14,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:13:14,834 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:13:14,835 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40.c [2020-10-12 13:13:14,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4af450ad1/62f862202daf4cf3974714e40af2244d/FLAG434db1045 [2020-10-12 13:13:15,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:13:15,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label40.c [2020-10-12 13:13:15,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4af450ad1/62f862202daf4cf3974714e40af2244d/FLAG434db1045 [2020-10-12 13:13:15,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4af450ad1/62f862202daf4cf3974714e40af2244d [2020-10-12 13:13:15,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:13:15,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:13:15,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:13:15,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:13:15,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:13:15,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:13:15" (1/1) ... [2020-10-12 13:13:15,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54bef0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:15, skipping insertion in model container [2020-10-12 13:13:15,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:13:15" (1/1) ... [2020-10-12 13:13:15,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:13:15,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:13:16,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:13:16,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:13:16,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:13:16,873 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:13:16,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16 WrapperNode [2020-10-12 13:13:16,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:13:16,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:13:16,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:13:16,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:13:16,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (1/1) ... [2020-10-12 13:13:16,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (1/1) ... [2020-10-12 13:13:16,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (1/1) ... [2020-10-12 13:13:16,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (1/1) ... [2020-10-12 13:13:17,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (1/1) ... [2020-10-12 13:13:17,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (1/1) ... [2020-10-12 13:13:17,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (1/1) ... [2020-10-12 13:13:17,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:13:17,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:13:17,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:13:17,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:13:17,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (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 [2020-10-12 13:13:17,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:13:17,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:13:17,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:13:17,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:13:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:13:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:13:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:13:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:13:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:13:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:13:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:13:19,093 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:13:19,093 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:13:19,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:13:19 BoogieIcfgContainer [2020-10-12 13:13:19,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:13:19,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:13:19,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:13:19,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:13:19,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:13:15" (1/3) ... [2020-10-12 13:13:19,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc3b802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:13:19, skipping insertion in model container [2020-10-12 13:13:19,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:13:16" (2/3) ... [2020-10-12 13:13:19,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc3b802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:13:19, skipping insertion in model container [2020-10-12 13:13:19,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:13:19" (3/3) ... [2020-10-12 13:13:19,115 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label40.c [2020-10-12 13:13:19,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:13:19,135 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:13:19,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:13:19,180 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:13:19,181 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:13:19,181 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:13:19,181 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:13:19,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:13:19,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:13:19,182 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:13:19,182 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:13:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-12 13:13:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 13:13:19,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:19,221 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] [2020-10-12 13:13:19,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:19,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1611366285, now seen corresponding path program 1 times [2020-10-12 13:13:19,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:19,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424734385] [2020-10-12 13:13:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:19,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:19,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:19,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 13:13:19,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-12 13:13:19,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:13:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:13:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 13:13:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:13:20,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:20,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:20,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:20,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:20,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:20,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:13:20,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:13:20,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:13:20,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424734385] [2020-10-12 13:13:20,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:13:20,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:13:20,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800203835] [2020-10-12 13:13:20,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:13:20,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:20,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:13:20,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:13:20,166 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-12 13:13:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:22,704 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-12 13:13:22,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:13:22,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-12 13:13:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:22,726 INFO L225 Difference]: With dead ends: 791 [2020-10-12 13:13:22,726 INFO L226 Difference]: Without dead ends: 434 [2020-10-12 13:13:22,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:13:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-12 13:13:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-12 13:13:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-12 13:13:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-12 13:13:22,828 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 50 [2020-10-12 13:13:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:22,828 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-12 13:13:22,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:13:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-12 13:13:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 13:13:22,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:22,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:22,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:13:22,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:22,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:22,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1777722578, now seen corresponding path program 1 times [2020-10-12 13:13:22,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:22,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145032175] [2020-10-12 13:13:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:13:24,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:13:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-10-12 13:13:24,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:13:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:13:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:13:24,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:13:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:24,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:13:24,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:13:24,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:24,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:13:24,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 13:13:24,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:13:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:13:24,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145032175] [2020-10-12 13:13:24,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:13:24,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:13:24,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935481744] [2020-10-12 13:13:24,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:13:24,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:24,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:13:24,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:13:24,853 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 7 states. [2020-10-12 13:13:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:27,579 INFO L93 Difference]: Finished difference Result 1285 states and 1881 transitions. [2020-10-12 13:13:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:13:27,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-12 13:13:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:27,594 INFO L225 Difference]: With dead ends: 1285 [2020-10-12 13:13:27,594 INFO L226 Difference]: Without dead ends: 861 [2020-10-12 13:13:27,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:13:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-12 13:13:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 827. [2020-10-12 13:13:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-10-12 13:13:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1109 transitions. [2020-10-12 13:13:27,653 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1109 transitions. Word has length 122 [2020-10-12 13:13:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:27,653 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 1109 transitions. [2020-10-12 13:13:27,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:13:27,654 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1109 transitions. [2020-10-12 13:13:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 13:13:27,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:27,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:27,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:13:27,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:27,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:27,659 INFO L82 PathProgramCache]: Analyzing trace with hash 832347202, now seen corresponding path program 1 times [2020-10-12 13:13:27,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:27,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734993458] [2020-10-12 13:13:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:29,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:29,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 13:13:29,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:13:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-10-12 13:13:29,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:13:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:13:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:13:29,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:29,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:29,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:29,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:13:29,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:13:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:29,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:29,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:29,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:13:29,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:29,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 13:13:29,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:13:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:13:29,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734993458] [2020-10-12 13:13:29,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:13:29,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:13:29,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989998898] [2020-10-12 13:13:29,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:13:29,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:29,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:13:29,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:13:29,799 INFO L87 Difference]: Start difference. First operand 827 states and 1109 transitions. Second operand 7 states. [2020-10-12 13:13:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:32,406 INFO L93 Difference]: Finished difference Result 2116 states and 2957 transitions. [2020-10-12 13:13:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:13:32,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-12 13:13:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:32,482 INFO L225 Difference]: With dead ends: 2116 [2020-10-12 13:13:32,482 INFO L226 Difference]: Without dead ends: 1295 [2020-10-12 13:13:32,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:13:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2020-10-12 13:13:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1220. [2020-10-12 13:13:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2020-10-12 13:13:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1544 transitions. [2020-10-12 13:13:32,577 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1544 transitions. Word has length 130 [2020-10-12 13:13:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:32,579 INFO L479 AbstractCegarLoop]: Abstraction has 1220 states and 1544 transitions. [2020-10-12 13:13:32,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:13:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1544 transitions. [2020-10-12 13:13:32,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 13:13:32,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:32,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:32,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:13:32,590 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:32,590 INFO L82 PathProgramCache]: Analyzing trace with hash -325905508, now seen corresponding path program 1 times [2020-10-12 13:13:32,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:32,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141754965] [2020-10-12 13:13:32,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:32,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:33,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:33,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 13:13:33,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-12 13:13:33,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:13:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 13:13:33,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:33,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:33,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:33,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:33,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:33,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:13:33,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:33,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:33,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:33,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:13:33,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:33,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-12 13:13:33,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:13:33,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:13:33,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141754965] [2020-10-12 13:13:33,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:33,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:13:33,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699537111] [2020-10-12 13:13:33,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:13:33,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:33,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:13:33,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:13:33,577 INFO L87 Difference]: Start difference. First operand 1220 states and 1544 transitions. Second operand 5 states. [2020-10-12 13:13:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:36,185 INFO L93 Difference]: Finished difference Result 2864 states and 3820 transitions. [2020-10-12 13:13:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:13:36,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-12 13:13:36,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:36,201 INFO L225 Difference]: With dead ends: 2864 [2020-10-12 13:13:36,202 INFO L226 Difference]: Without dead ends: 2028 [2020-10-12 13:13:36,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:13:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2020-10-12 13:13:36,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2022. [2020-10-12 13:13:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2022 states. [2020-10-12 13:13:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2588 transitions. [2020-10-12 13:13:36,264 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2588 transitions. Word has length 181 [2020-10-12 13:13:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:36,265 INFO L479 AbstractCegarLoop]: Abstraction has 2022 states and 2588 transitions. [2020-10-12 13:13:36,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:13:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2588 transitions. [2020-10-12 13:13:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-12 13:13:36,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:36,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:36,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:13:36,271 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:36,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1768963916, now seen corresponding path program 1 times [2020-10-12 13:13:36,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:36,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568785445] [2020-10-12 13:13:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:36,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:39,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:39,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-12 13:13:39,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:13:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2804 [2020-10-12 13:13:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:13:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:13:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-12 13:13:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:39,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:39,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:39,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:13:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:13:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:39,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:39,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:39,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:13:39,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 13:13:39,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:39,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:13:39,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:13:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:39,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:39,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:13:39,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 13:13:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:13:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:13:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 72 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:13:40,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568785445] [2020-10-12 13:13:40,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:40,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:13:40,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100812908] [2020-10-12 13:13:40,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:13:40,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:40,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:13:40,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:13:40,049 INFO L87 Difference]: Start difference. First operand 2022 states and 2588 transitions. Second operand 8 states. [2020-10-12 13:13:43,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:43,222 INFO L93 Difference]: Finished difference Result 3778 states and 4986 transitions. [2020-10-12 13:13:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:13:43,223 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-10-12 13:13:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:43,234 INFO L225 Difference]: With dead ends: 3778 [2020-10-12 13:13:43,235 INFO L226 Difference]: Without dead ends: 2120 [2020-10-12 13:13:43,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:13:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2020-10-12 13:13:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2047. [2020-10-12 13:13:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2047 states. [2020-10-12 13:13:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2609 transitions. [2020-10-12 13:13:43,299 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2609 transitions. Word has length 239 [2020-10-12 13:13:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:43,300 INFO L479 AbstractCegarLoop]: Abstraction has 2047 states and 2609 transitions. [2020-10-12 13:13:43,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:13:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2609 transitions. [2020-10-12 13:13:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-12 13:13:43,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:43,306 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:13:43,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:13:43,306 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:43,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:43,306 INFO L82 PathProgramCache]: Analyzing trace with hash -877893893, now seen corresponding path program 1 times [2020-10-12 13:13:43,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:43,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533797796] [2020-10-12 13:13:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:43,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:45,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:45,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-12 13:13:45,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:13:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2447 [2020-10-12 13:13:45,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:13:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:13:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 13:13:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:45,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:45,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:13:45,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:46,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:13:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 13:13:46,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:13:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:13:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:13:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:46,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:46,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:13:46,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:46,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 13:13:46,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:13:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 118 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:13:46,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533797796] [2020-10-12 13:13:46,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:46,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:13:46,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580668763] [2020-10-12 13:13:46,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:13:46,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:46,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:13:46,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:13:46,383 INFO L87 Difference]: Start difference. First operand 2047 states and 2609 transitions. Second operand 6 states. [2020-10-12 13:13:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:48,871 INFO L93 Difference]: Finished difference Result 4594 states and 6374 transitions. [2020-10-12 13:13:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:13:48,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2020-10-12 13:13:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:48,898 INFO L225 Difference]: With dead ends: 4594 [2020-10-12 13:13:48,898 INFO L226 Difference]: Without dead ends: 2931 [2020-10-12 13:13:48,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:13:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-10-12 13:13:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2842. [2020-10-12 13:13:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2020-10-12 13:13:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3646 transitions. [2020-10-12 13:13:48,997 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3646 transitions. Word has length 246 [2020-10-12 13:13:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:48,998 INFO L479 AbstractCegarLoop]: Abstraction has 2842 states and 3646 transitions. [2020-10-12 13:13:48,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:13:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3646 transitions. [2020-10-12 13:13:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-12 13:13:49,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:49,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:49,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:13:49,005 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1089561137, now seen corresponding path program 1 times [2020-10-12 13:13:49,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:49,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582927682] [2020-10-12 13:13:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:49,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:49,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:49,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-12 13:13:49,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:13:49,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-10-12 13:13:49,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:49,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:13:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 13:13:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:13:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:50,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:50,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:13:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:50,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:50,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:50,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:13:50,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 13:13:50,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:13:50,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:13:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:50,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:50,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:13:50,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 13:13:50,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:13:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:13:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:13:50,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582927682] [2020-10-12 13:13:50,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:50,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:13:50,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794619524] [2020-10-12 13:13:50,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:13:50,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:13:50,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:13:50,521 INFO L87 Difference]: Start difference. First operand 2842 states and 3646 transitions. Second operand 7 states. [2020-10-12 13:13:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:53,389 INFO L93 Difference]: Finished difference Result 6958 states and 9247 transitions. [2020-10-12 13:13:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:13:53,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-12 13:13:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:53,412 INFO L225 Difference]: With dead ends: 6958 [2020-10-12 13:13:53,412 INFO L226 Difference]: Without dead ends: 4502 [2020-10-12 13:13:53,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:13:53,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2020-10-12 13:13:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 4465. [2020-10-12 13:13:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4465 states. [2020-10-12 13:13:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 5787 transitions. [2020-10-12 13:13:53,532 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 5787 transitions. Word has length 252 [2020-10-12 13:13:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:53,532 INFO L479 AbstractCegarLoop]: Abstraction has 4465 states and 5787 transitions. [2020-10-12 13:13:53,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:13:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 5787 transitions. [2020-10-12 13:13:53,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-12 13:13:53,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:53,539 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:13:53,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:13:53,540 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:53,540 INFO L82 PathProgramCache]: Analyzing trace with hash -152159793, now seen corresponding path program 1 times [2020-10-12 13:13:53,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:53,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684032518] [2020-10-12 13:13:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:56,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:56,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-12 13:13:56,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:13:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3015 [2020-10-12 13:13:56,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:13:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 13:13:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 13:13:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:13:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:56,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:56,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:56,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:13:56,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:56,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:13:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 13:13:56,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:13:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:56,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:56,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:57,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:57,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:13:57,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:13:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 13:13:57,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:13:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 13:13:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:13:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-12 13:13:57,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684032518] [2020-10-12 13:13:57,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:57,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:13:57,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527371986] [2020-10-12 13:13:57,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:13:57,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:13:57,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:13:57,392 INFO L87 Difference]: Start difference. First operand 4465 states and 5787 transitions. Second operand 8 states. [2020-10-12 13:13:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:59,399 INFO L93 Difference]: Finished difference Result 4672 states and 6101 transitions. [2020-10-12 13:13:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:13:59,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-12 13:13:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:59,419 INFO L225 Difference]: With dead ends: 4672 [2020-10-12 13:13:59,419 INFO L226 Difference]: Without dead ends: 4670 [2020-10-12 13:13:59,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:13:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2020-10-12 13:13:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4557. [2020-10-12 13:13:59,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-10-12 13:13:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 5936 transitions. [2020-10-12 13:13:59,537 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 5936 transitions. Word has length 259 [2020-10-12 13:13:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:59,537 INFO L479 AbstractCegarLoop]: Abstraction has 4557 states and 5936 transitions. [2020-10-12 13:13:59,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:13:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 5936 transitions. [2020-10-12 13:13:59,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 13:13:59,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:59,544 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:13:59,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:13:59,545 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:59,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2134512577, now seen corresponding path program 1 times [2020-10-12 13:13:59,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:59,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39012183] [2020-10-12 13:13:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:59,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:01,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-10-12 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:14:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:14:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-12 13:14:01,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:01,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:01,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:01,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:01,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:14:01,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:14:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:01,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:01,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:14:01,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:01,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-12 13:14:01,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:14:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:01,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:14:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:01,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:01,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:01,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:01,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 13:14:01,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:01,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:14:01,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:01,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:14:01,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 89 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:14:02,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39012183] [2020-10-12 13:14:02,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:02,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:14:02,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301334913] [2020-10-12 13:14:02,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:14:02,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:02,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:14:02,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:14:02,013 INFO L87 Difference]: Start difference. First operand 4557 states and 5936 transitions. Second operand 9 states. [2020-10-12 13:14:05,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:05,755 INFO L93 Difference]: Finished difference Result 11744 states and 16138 transitions. [2020-10-12 13:14:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:14:05,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 260 [2020-10-12 13:14:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:05,804 INFO L225 Difference]: With dead ends: 11744 [2020-10-12 13:14:05,805 INFO L226 Difference]: Without dead ends: 7573 [2020-10-12 13:14:05,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-12 13:14:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7573 states. [2020-10-12 13:14:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7573 to 7369. [2020-10-12 13:14:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7369 states. [2020-10-12 13:14:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 9518 transitions. [2020-10-12 13:14:06,053 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 9518 transitions. Word has length 260 [2020-10-12 13:14:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:06,054 INFO L479 AbstractCegarLoop]: Abstraction has 7369 states and 9518 transitions. [2020-10-12 13:14:06,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:14:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 9518 transitions. [2020-10-12 13:14:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-12 13:14:06,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:06,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:06,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:14:06,077 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:06,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:06,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1727128070, now seen corresponding path program 1 times [2020-10-12 13:14:06,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:06,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034917272] [2020-10-12 13:14:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:08,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-12 13:14:08,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:14:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2091 [2020-10-12 13:14:08,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 13:14:08,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:14:08,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:14:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:08,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:08,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:08,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:08,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:14:08,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:08,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:14:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:08,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:14:08,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:14:08,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:08,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:08,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:14:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:08,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:08,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:14:08,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 13:14:08,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:14:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-12 13:14:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:08,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:08,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:08,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:08,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 13:14:08,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:14:08,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:14:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:14:08,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034917272] [2020-10-12 13:14:08,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:08,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:14:08,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693555185] [2020-10-12 13:14:08,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:14:08,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:08,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:14:08,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:14:08,993 INFO L87 Difference]: Start difference. First operand 7369 states and 9518 transitions. Second operand 7 states. [2020-10-12 13:14:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:13,034 INFO L93 Difference]: Finished difference Result 13817 states and 18554 transitions. [2020-10-12 13:14:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:14:13,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-12 13:14:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:13,067 INFO L225 Difference]: With dead ends: 13817 [2020-10-12 13:14:13,067 INFO L226 Difference]: Without dead ends: 8420 [2020-10-12 13:14:13,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:14:13,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8420 states. [2020-10-12 13:14:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8420 to 7978. [2020-10-12 13:14:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7978 states. [2020-10-12 13:14:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 10240 transitions. [2020-10-12 13:14:13,256 INFO L78 Accepts]: Start accepts. Automaton has 7978 states and 10240 transitions. Word has length 334 [2020-10-12 13:14:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:13,256 INFO L479 AbstractCegarLoop]: Abstraction has 7978 states and 10240 transitions. [2020-10-12 13:14:13,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:14:13,257 INFO L276 IsEmpty]: Start isEmpty. Operand 7978 states and 10240 transitions. [2020-10-12 13:14:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-12 13:14:13,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:13,275 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:14:13,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:14:13,275 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:13,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2014536142, now seen corresponding path program 1 times [2020-10-12 13:14:13,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:13,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112871002] [2020-10-12 13:14:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:13,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:15,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:15,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-12 13:14:15,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:14:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2108 [2020-10-12 13:14:15,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:14:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:14:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-12 13:14:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:15,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:15,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:15,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:15,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:14:15,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:15,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:15,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:15,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:14:15,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:15,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 13:14:15,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:14:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:15,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:14:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:15,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:15,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:14:15,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:15,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 13:14:15,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:15,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:15,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:15,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:14:15,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 13:14:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:15,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:15,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:15,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 13:14:15,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:15,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:14:15,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 370 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 13:14:16,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112871002] [2020-10-12 13:14:16,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:16,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:14:16,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081867487] [2020-10-12 13:14:16,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:14:16,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:16,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:14:16,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:14:16,098 INFO L87 Difference]: Start difference. First operand 7978 states and 10240 transitions. Second operand 8 states. [2020-10-12 13:14:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:18,777 INFO L93 Difference]: Finished difference Result 16993 states and 21994 transitions. [2020-10-12 13:14:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:14:18,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 340 [2020-10-12 13:14:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:18,808 INFO L225 Difference]: With dead ends: 16993 [2020-10-12 13:14:18,809 INFO L226 Difference]: Without dead ends: 8825 [2020-10-12 13:14:18,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:14:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8825 states. [2020-10-12 13:14:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8825 to 8744. [2020-10-12 13:14:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8744 states. [2020-10-12 13:14:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8744 states to 8744 states and 11045 transitions. [2020-10-12 13:14:19,117 INFO L78 Accepts]: Start accepts. Automaton has 8744 states and 11045 transitions. Word has length 340 [2020-10-12 13:14:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:19,118 INFO L479 AbstractCegarLoop]: Abstraction has 8744 states and 11045 transitions. [2020-10-12 13:14:19,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:14:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 8744 states and 11045 transitions. [2020-10-12 13:14:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-12 13:14:19,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:19,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:19,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:14:19,138 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash 249720626, now seen corresponding path program 1 times [2020-10-12 13:14:19,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:19,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855818503] [2020-10-12 13:14:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:19,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:20,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:20,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-12 13:14:20,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:14:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-12 13:14:20,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:14:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:14:20,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:20,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:20,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:20,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:20,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:14:20,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:20,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:20,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:20,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:14:20,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 13:14:20,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:14:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:14:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:20,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:20,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:20,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:14:20,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 13:14:20,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:14:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:20,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-12 13:14:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:20,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:14:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:14:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 200 proven. 69 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 13:14:20,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855818503] [2020-10-12 13:14:20,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:20,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:14:20,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992979746] [2020-10-12 13:14:20,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:14:20,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:20,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:14:20,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:14:20,965 INFO L87 Difference]: Start difference. First operand 8744 states and 11045 transitions. Second operand 7 states. [2020-10-12 13:14:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:23,752 INFO L93 Difference]: Finished difference Result 19096 states and 24987 transitions. [2020-10-12 13:14:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:14:23,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-12 13:14:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:23,788 INFO L225 Difference]: With dead ends: 19096 [2020-10-12 13:14:23,788 INFO L226 Difference]: Without dead ends: 10736 [2020-10-12 13:14:23,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:14:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10736 states. [2020-10-12 13:14:24,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10736 to 10496. [2020-10-12 13:14:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10496 states. [2020-10-12 13:14:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10496 states to 10496 states and 13322 transitions. [2020-10-12 13:14:24,037 INFO L78 Accepts]: Start accepts. Automaton has 10496 states and 13322 transitions. Word has length 345 [2020-10-12 13:14:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:24,038 INFO L479 AbstractCegarLoop]: Abstraction has 10496 states and 13322 transitions. [2020-10-12 13:14:24,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:14:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 10496 states and 13322 transitions. [2020-10-12 13:14:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-12 13:14:24,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:24,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:24,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:14:24,055 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:24,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1457678574, now seen corresponding path program 1 times [2020-10-12 13:14:24,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:24,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020303869] [2020-10-12 13:14:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:24,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:24,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-12 13:14:24,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-12 13:14:24,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:24,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:24,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-12 13:14:24,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:14:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:24,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:24,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:24,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:24,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:14:24,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:24,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:24,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:25,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:25,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:14:25,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:14:25,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:25,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:14:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:25,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:25,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:14:25,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:25,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 13:14:25,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:14:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:25,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:14:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:25,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:25,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:25,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 13:14:25,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:14:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 13:14:25,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020303869] [2020-10-12 13:14:25,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:25,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:14:25,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870500684] [2020-10-12 13:14:25,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:14:25,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:25,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:14:25,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:14:25,590 INFO L87 Difference]: Start difference. First operand 10496 states and 13322 transitions. Second operand 7 states. [2020-10-12 13:14:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:28,253 INFO L93 Difference]: Finished difference Result 17518 states and 22472 transitions. [2020-10-12 13:14:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:14:28,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-12 13:14:28,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:28,282 INFO L225 Difference]: With dead ends: 17518 [2020-10-12 13:14:28,283 INFO L226 Difference]: Without dead ends: 10749 [2020-10-12 13:14:28,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:14:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10749 states. [2020-10-12 13:14:28,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10749 to 10698. [2020-10-12 13:14:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10698 states. [2020-10-12 13:14:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10698 states to 10698 states and 13553 transitions. [2020-10-12 13:14:28,526 INFO L78 Accepts]: Start accepts. Automaton has 10698 states and 13553 transitions. Word has length 356 [2020-10-12 13:14:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:28,526 INFO L479 AbstractCegarLoop]: Abstraction has 10698 states and 13553 transitions. [2020-10-12 13:14:28,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:14:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 10698 states and 13553 transitions. [2020-10-12 13:14:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-12 13:14:28,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:28,542 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:14:28,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:14:28,543 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:28,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:28,543 INFO L82 PathProgramCache]: Analyzing trace with hash 309264218, now seen corresponding path program 1 times [2020-10-12 13:14:28,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:28,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531121145] [2020-10-12 13:14:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:29,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:29,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-12 13:14:29,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-12 13:14:29,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-12 13:14:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 13:14:29,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:29,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:29,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:29,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:29,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:29,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:14:29,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:29,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:29,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:29,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:29,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:14:29,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:14:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:14:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:29,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:14:29,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 13:14:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 13:14:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:14:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-12 13:14:29,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531121145] [2020-10-12 13:14:29,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:29,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:14:29,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923506271] [2020-10-12 13:14:29,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:14:29,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:29,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:14:29,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:14:29,634 INFO L87 Difference]: Start difference. First operand 10698 states and 13553 transitions. Second operand 5 states. [2020-10-12 13:14:32,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:32,233 INFO L93 Difference]: Finished difference Result 24110 states and 31153 transitions. [2020-10-12 13:14:32,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:14:32,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2020-10-12 13:14:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:32,275 INFO L225 Difference]: With dead ends: 24110 [2020-10-12 13:14:32,275 INFO L226 Difference]: Without dead ends: 13796 [2020-10-12 13:14:32,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:14:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13796 states. [2020-10-12 13:14:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13796 to 13724. [2020-10-12 13:14:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13724 states. [2020-10-12 13:14:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13724 states to 13724 states and 17343 transitions. [2020-10-12 13:14:32,613 INFO L78 Accepts]: Start accepts. Automaton has 13724 states and 17343 transitions. Word has length 356 [2020-10-12 13:14:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:32,614 INFO L479 AbstractCegarLoop]: Abstraction has 13724 states and 17343 transitions. [2020-10-12 13:14:32,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:14:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13724 states and 17343 transitions. [2020-10-12 13:14:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-12 13:14:32,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:32,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:32,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:14:32,630 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:32,631 INFO L82 PathProgramCache]: Analyzing trace with hash -965783877, now seen corresponding path program 1 times [2020-10-12 13:14:32,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:32,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456610531] [2020-10-12 13:14:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:32,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:33,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:33,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-12 13:14:33,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:14:33,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-10-12 13:14:33,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:33,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:33,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-12 13:14:33,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:14:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:33,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:33,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:33,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:14:33,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:33,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:33,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:33,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:14:33,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:14:33,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:33,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:14:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:33,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:33,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 13:14:33,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:33,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:14:33,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 13:14:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:33,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-12 13:14:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:34,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:34,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 13:14:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:14:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-12 13:14:34,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456610531] [2020-10-12 13:14:34,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:34,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:14:34,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450707525] [2020-10-12 13:14:34,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:14:34,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:14:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:14:34,279 INFO L87 Difference]: Start difference. First operand 13724 states and 17343 transitions. Second operand 7 states. [2020-10-12 13:14:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:37,628 INFO L93 Difference]: Finished difference Result 26696 states and 34722 transitions. [2020-10-12 13:14:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:14:37,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-12 13:14:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:37,667 INFO L225 Difference]: With dead ends: 26696 [2020-10-12 13:14:37,667 INFO L226 Difference]: Without dead ends: 15121 [2020-10-12 13:14:37,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:14:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15121 states. [2020-10-12 13:14:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15121 to 14886. [2020-10-12 13:14:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14886 states. [2020-10-12 13:14:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14886 states to 14886 states and 18697 transitions. [2020-10-12 13:14:37,952 INFO L78 Accepts]: Start accepts. Automaton has 14886 states and 18697 transitions. Word has length 371 [2020-10-12 13:14:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:37,953 INFO L479 AbstractCegarLoop]: Abstraction has 14886 states and 18697 transitions. [2020-10-12 13:14:37,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:14:37,953 INFO L276 IsEmpty]: Start isEmpty. Operand 14886 states and 18697 transitions. [2020-10-12 13:14:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-12 13:14:37,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:37,969 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:37,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:14:37,969 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:37,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:37,969 INFO L82 PathProgramCache]: Analyzing trace with hash -2010124629, now seen corresponding path program 1 times [2020-10-12 13:14:37,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:37,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087056603] [2020-10-12 13:14:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:39,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:39,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-12 13:14:39,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:14:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720 [2020-10-12 13:14:39,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-12 13:14:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 13:14:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:39,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:39,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:39,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:39,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:14:39,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:39,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:14:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 13:14:39,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:14:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:14:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:39,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:40,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:14:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 13:14:40,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:14:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:40,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-12 13:14:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:40,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:40,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:40,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:40,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:14:40,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:14:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:40,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 239 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 13:14:40,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087056603] [2020-10-12 13:14:40,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:40,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:14:40,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260739181] [2020-10-12 13:14:40,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:14:40,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:40,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:14:40,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:14:40,303 INFO L87 Difference]: Start difference. First operand 14886 states and 18697 transitions. Second operand 7 states. [2020-10-12 13:14:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:43,935 INFO L93 Difference]: Finished difference Result 30953 states and 39109 transitions. [2020-10-12 13:14:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:14:43,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 379 [2020-10-12 13:14:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:43,971 INFO L225 Difference]: With dead ends: 30953 [2020-10-12 13:14:43,971 INFO L226 Difference]: Without dead ends: 17419 [2020-10-12 13:14:43,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:14:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17419 states. [2020-10-12 13:14:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17419 to 17375. [2020-10-12 13:14:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17375 states. [2020-10-12 13:14:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 21408 transitions. [2020-10-12 13:14:44,566 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 21408 transitions. Word has length 379 [2020-10-12 13:14:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:44,567 INFO L479 AbstractCegarLoop]: Abstraction has 17375 states and 21408 transitions. [2020-10-12 13:14:44,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:14:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 21408 transitions. [2020-10-12 13:14:44,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-12 13:14:44,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:44,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:44,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:14:44,584 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:44,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1408661979, now seen corresponding path program 1 times [2020-10-12 13:14:44,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:44,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950572877] [2020-10-12 13:14:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:45,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:45,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-12 13:14:45,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:14:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-12 13:14:45,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-12 13:14:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:14:45,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:45,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:45,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:14:45,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:45,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:45,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:45,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:14:45,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:14:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:14:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:45,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:45,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:14:45,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 13:14:45,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 13:14:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-12 13:14:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:45,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:45,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:45,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 13:14:45,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:45,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:45,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:14:45,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-12 13:14:45,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950572877] [2020-10-12 13:14:45,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:45,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:14:45,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118464158] [2020-10-12 13:14:45,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:14:45,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:45,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:14:45,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:14:45,952 INFO L87 Difference]: Start difference. First operand 17375 states and 21408 transitions. Second operand 7 states. [2020-10-12 13:14:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:50,200 INFO L93 Difference]: Finished difference Result 31287 states and 38812 transitions. [2020-10-12 13:14:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:14:50,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-10-12 13:14:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:50,235 INFO L225 Difference]: With dead ends: 31287 [2020-10-12 13:14:50,235 INFO L226 Difference]: Without dead ends: 19933 [2020-10-12 13:14:50,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:14:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19933 states. [2020-10-12 13:14:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19933 to 18541. [2020-10-12 13:14:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18541 states. [2020-10-12 13:14:50,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18541 states to 18541 states and 22769 transitions. [2020-10-12 13:14:50,593 INFO L78 Accepts]: Start accepts. Automaton has 18541 states and 22769 transitions. Word has length 387 [2020-10-12 13:14:50,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:50,593 INFO L479 AbstractCegarLoop]: Abstraction has 18541 states and 22769 transitions. [2020-10-12 13:14:50,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:14:50,593 INFO L276 IsEmpty]: Start isEmpty. Operand 18541 states and 22769 transitions. [2020-10-12 13:14:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-12 13:14:50,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:50,622 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:50,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:14:50,622 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:50,622 INFO L82 PathProgramCache]: Analyzing trace with hash 317405084, now seen corresponding path program 1 times [2020-10-12 13:14:50,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:50,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357212060] [2020-10-12 13:14:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:51,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:51,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-12 13:14:51,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:14:51,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-12 13:14:51,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:51,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 13:14:51,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 13:14:51,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:52,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:52,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:52,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:14:52,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:52,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:52,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:14:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 13:14:52,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:14:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:14:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:14:52,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 13:14:52,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:14:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:53,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-12 13:14:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:14:53,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:14:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 239 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 13:14:53,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357212060] [2020-10-12 13:14:53,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:53,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:14:53,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139965465] [2020-10-12 13:14:53,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:14:53,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:53,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:14:53,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:14:53,203 INFO L87 Difference]: Start difference. First operand 18541 states and 22769 transitions. Second operand 7 states. [2020-10-12 13:14:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:56,187 INFO L93 Difference]: Finished difference Result 35972 states and 44516 transitions. [2020-10-12 13:14:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:14:56,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 400 [2020-10-12 13:14:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:56,221 INFO L225 Difference]: With dead ends: 35972 [2020-10-12 13:14:56,221 INFO L226 Difference]: Without dead ends: 19363 [2020-10-12 13:14:56,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:14:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19363 states. [2020-10-12 13:14:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19363 to 19311. [2020-10-12 13:14:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19311 states. [2020-10-12 13:14:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19311 states to 19311 states and 23696 transitions. [2020-10-12 13:14:56,592 INFO L78 Accepts]: Start accepts. Automaton has 19311 states and 23696 transitions. Word has length 400 [2020-10-12 13:14:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:56,593 INFO L479 AbstractCegarLoop]: Abstraction has 19311 states and 23696 transitions. [2020-10-12 13:14:56,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:14:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 19311 states and 23696 transitions. [2020-10-12 13:14:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-12 13:14:56,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:56,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:56,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:14:56,618 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash 99788820, now seen corresponding path program 1 times [2020-10-12 13:14:56,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:56,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535731967] [2020-10-12 13:14:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:56,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:00,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:00,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-12 13:15:00,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:15:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3556 [2020-10-12 13:15:00,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 13:15:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:15:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-12 13:15:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:00,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:00,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:00,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:00,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:15:00,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:15:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:00,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:00,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:00,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:00,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:15:00,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:00,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-12 13:15:00,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:00,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:00,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:00,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:15:00,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:15:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:00,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:00,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 13:15:00,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 13:15:00,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 13:15:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-12 13:15:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:01,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:01,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:15:01,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 13:15:01,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 13:15:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 344 proven. 4 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-12 13:15:01,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535731967] [2020-10-12 13:15:01,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:01,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:15:01,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238756187] [2020-10-12 13:15:01,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:15:01,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:01,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:15:01,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:15:01,381 INFO L87 Difference]: Start difference. First operand 19311 states and 23696 transitions. Second operand 8 states. [2020-10-12 13:15:04,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:04,212 INFO L93 Difference]: Finished difference Result 38189 states and 48826 transitions. [2020-10-12 13:15:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:15:04,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 429 [2020-10-12 13:15:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:04,266 INFO L225 Difference]: With dead ends: 38189 [2020-10-12 13:15:04,267 INFO L226 Difference]: Without dead ends: 20606 [2020-10-12 13:15:04,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:15:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20606 states. [2020-10-12 13:15:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20606 to 20040. [2020-10-12 13:15:04,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20040 states. [2020-10-12 13:15:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20040 states to 20040 states and 23771 transitions. [2020-10-12 13:15:04,656 INFO L78 Accepts]: Start accepts. Automaton has 20040 states and 23771 transitions. Word has length 429 [2020-10-12 13:15:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:04,657 INFO L479 AbstractCegarLoop]: Abstraction has 20040 states and 23771 transitions. [2020-10-12 13:15:04,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:15:04,657 INFO L276 IsEmpty]: Start isEmpty. Operand 20040 states and 23771 transitions. [2020-10-12 13:15:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-12 13:15:04,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:04,666 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:04,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:15:04,666 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:04,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1818038228, now seen corresponding path program 1 times [2020-10-12 13:15:04,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:04,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939420943] [2020-10-12 13:15:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:08,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:08,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-12 13:15:08,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3742 [2020-10-12 13:15:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:15:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:15:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-12 13:15:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:08,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:08,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:08,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:08,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:08,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:15:08,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:15:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:08,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:08,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:15:08,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:08,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 13:15:08,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:15:08,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:08,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:15:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:09,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:09,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:15:09,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 13:15:09,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:15:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:15:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:15:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:09,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:09,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:15:09,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 13:15:09,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:15:09,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-12 13:15:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:09,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:09,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:09,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:15:09,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 13:15:09,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:15:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 250 proven. 332 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 13:15:09,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939420943] [2020-10-12 13:15:09,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:09,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:15:09,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300006323] [2020-10-12 13:15:09,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:15:09,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:15:09,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:15:09,432 INFO L87 Difference]: Start difference. First operand 20040 states and 23771 transitions. Second operand 10 states. [2020-10-12 13:15:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:13,244 INFO L93 Difference]: Finished difference Result 37165 states and 44874 transitions. [2020-10-12 13:15:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 13:15:13,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 431 [2020-10-12 13:15:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:13,287 INFO L225 Difference]: With dead ends: 37165 [2020-10-12 13:15:13,287 INFO L226 Difference]: Without dead ends: 23048 [2020-10-12 13:15:13,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-12 13:15:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23048 states. [2020-10-12 13:15:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23048 to 22956. [2020-10-12 13:15:13,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22956 states. [2020-10-12 13:15:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22956 states to 22956 states and 27299 transitions. [2020-10-12 13:15:13,666 INFO L78 Accepts]: Start accepts. Automaton has 22956 states and 27299 transitions. Word has length 431 [2020-10-12 13:15:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:13,666 INFO L479 AbstractCegarLoop]: Abstraction has 22956 states and 27299 transitions. [2020-10-12 13:15:13,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:15:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 22956 states and 27299 transitions. [2020-10-12 13:15:13,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-12 13:15:13,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:13,678 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:13,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 13:15:13,679 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:13,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:13,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1925228671, now seen corresponding path program 1 times [2020-10-12 13:15:13,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:13,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863493258] [2020-10-12 13:15:13,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:16,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-12 13:15:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:15:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2944 [2020-10-12 13:15:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:15:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-12 13:15:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 13:15:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:16,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:15:16,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:16,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:16,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:15:16,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:15:16,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:15:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:17,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:17,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 13:15:17,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:15:17,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-12 13:15:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-12 13:15:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:17,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:15:17,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-12 13:15:17,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:15:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:15:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-12 13:15:18,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863493258] [2020-10-12 13:15:18,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:18,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:15:18,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531882008] [2020-10-12 13:15:18,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:15:18,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:18,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:15:18,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:15:18,667 INFO L87 Difference]: Start difference. First operand 22956 states and 27299 transitions. Second operand 10 states. [2020-10-12 13:15:18,889 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-12 13:15:19,120 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-12 13:15:19,335 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-12 13:15:19,489 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-12 13:15:21,675 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-10-12 13:15:22,023 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-12 13:15:22,274 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-10-12 13:15:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:23,267 INFO L93 Difference]: Finished difference Result 39372 states and 47038 transitions. [2020-10-12 13:15:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:15:23,268 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 457 [2020-10-12 13:15:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:23,314 INFO L225 Difference]: With dead ends: 39372 [2020-10-12 13:15:23,314 INFO L226 Difference]: Without dead ends: 23141 [2020-10-12 13:15:23,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-12 13:15:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23141 states. [2020-10-12 13:15:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23141 to 22766. [2020-10-12 13:15:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22766 states. [2020-10-12 13:15:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22766 states to 22766 states and 27018 transitions. [2020-10-12 13:15:23,817 INFO L78 Accepts]: Start accepts. Automaton has 22766 states and 27018 transitions. Word has length 457 [2020-10-12 13:15:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:23,819 INFO L479 AbstractCegarLoop]: Abstraction has 22766 states and 27018 transitions. [2020-10-12 13:15:23,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:15:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 22766 states and 27018 transitions. [2020-10-12 13:15:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-12 13:15:23,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:23,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:23,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 13:15:23,832 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1292608687, now seen corresponding path program 1 times [2020-10-12 13:15:23,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:23,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714464494] [2020-10-12 13:15:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:24,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:24,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-12 13:15:24,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-12 13:15:24,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-12 13:15:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:15:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:24,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:24,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:24,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:15:24,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:24,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:24,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:24,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:15:24,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:15:24,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:24,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:24,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:24,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:15:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:24,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:24,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-12 13:15:24,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 13:15:24,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-12 13:15:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-12 13:15:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:25,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:25,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:15:25,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:25,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 13:15:25,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:25,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:15:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:15:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-12 13:15:25,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714464494] [2020-10-12 13:15:25,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:25,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:15:25,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22448654] [2020-10-12 13:15:25,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:15:25,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:15:25,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:15:25,539 INFO L87 Difference]: Start difference. First operand 22766 states and 27018 transitions. Second operand 7 states. [2020-10-12 13:15:28,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:28,973 INFO L93 Difference]: Finished difference Result 39959 states and 47561 transitions. [2020-10-12 13:15:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:15:28,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 458 [2020-10-12 13:15:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:29,027 INFO L225 Difference]: With dead ends: 39959 [2020-10-12 13:15:29,027 INFO L226 Difference]: Without dead ends: 23972 [2020-10-12 13:15:29,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:15:29,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23972 states. [2020-10-12 13:15:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23972 to 23732. [2020-10-12 13:15:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23732 states. [2020-10-12 13:15:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23732 states to 23732 states and 28112 transitions. [2020-10-12 13:15:29,397 INFO L78 Accepts]: Start accepts. Automaton has 23732 states and 28112 transitions. Word has length 458 [2020-10-12 13:15:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:29,398 INFO L479 AbstractCegarLoop]: Abstraction has 23732 states and 28112 transitions. [2020-10-12 13:15:29,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:15:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 23732 states and 28112 transitions. [2020-10-12 13:15:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-12 13:15:29,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:29,412 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:29,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 13:15:29,413 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2019701294, now seen corresponding path program 1 times [2020-10-12 13:15:29,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:29,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308181675] [2020-10-12 13:15:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:31,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:31,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-12 13:15:31,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:31,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1763 [2020-10-12 13:15:31,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-12 13:15:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:15:31,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:31,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:31,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:31,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:31,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:15:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:31,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:31,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:31,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:31,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:15:31,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:31,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:15:31,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:31,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:31,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:31,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:31,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:15:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:31,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:31,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:15:31,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:31,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 13:15:31,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:31,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:31,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:31,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 13:15:31,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:31,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:15:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:31,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:31,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:15:31,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:15:31,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:31,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:15:31,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-12 13:15:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:31,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:31,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:15:31,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:15:31,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:15:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 319 proven. 69 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2020-10-12 13:15:31,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308181675] [2020-10-12 13:15:31,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:31,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:15:31,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892471658] [2020-10-12 13:15:31,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:15:31,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:31,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:15:31,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:15:31,998 INFO L87 Difference]: Start difference. First operand 23732 states and 28112 transitions. Second operand 7 states. [2020-10-12 13:15:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:35,316 INFO L93 Difference]: Finished difference Result 44264 states and 55779 transitions. [2020-10-12 13:15:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:15:35,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 461 [2020-10-12 13:15:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:35,405 INFO L225 Difference]: With dead ends: 44264 [2020-10-12 13:15:35,405 INFO L226 Difference]: Without dead ends: 24595 [2020-10-12 13:15:35,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:15:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24595 states. [2020-10-12 13:15:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24595 to 23920. [2020-10-12 13:15:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23920 states. [2020-10-12 13:15:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23920 states to 23920 states and 28311 transitions. [2020-10-12 13:15:36,175 INFO L78 Accepts]: Start accepts. Automaton has 23920 states and 28311 transitions. Word has length 461 [2020-10-12 13:15:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:36,176 INFO L479 AbstractCegarLoop]: Abstraction has 23920 states and 28311 transitions. [2020-10-12 13:15:36,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:15:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 23920 states and 28311 transitions. [2020-10-12 13:15:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-12 13:15:36,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:36,190 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:36,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 13:15:36,190 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:36,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:36,190 INFO L82 PathProgramCache]: Analyzing trace with hash -523610305, now seen corresponding path program 1 times [2020-10-12 13:15:36,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:36,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357424917] [2020-10-12 13:15:36,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:37,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:37,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-12 13:15:37,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1698 [2020-10-12 13:15:37,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-12 13:15:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:15:37,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:38,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:38,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:38,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:15:38,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:38,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:38,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:38,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:15:38,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:15:38,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:38,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:15:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:38,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:38,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:15:38,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 13:15:38,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:38,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:38,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:38,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-12 13:15:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:15:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:38,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:38,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:15:38,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 13:15:38,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:15:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-12 13:15:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:38,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:38,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:15:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:15:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:15:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 319 proven. 69 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2020-10-12 13:15:38,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357424917] [2020-10-12 13:15:38,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:38,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:15:38,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908434336] [2020-10-12 13:15:38,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:15:38,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:38,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:15:38,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:15:38,669 INFO L87 Difference]: Start difference. First operand 23920 states and 28311 transitions. Second operand 7 states. [2020-10-12 13:15:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:41,651 INFO L93 Difference]: Finished difference Result 46345 states and 54879 transitions. [2020-10-12 13:15:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:15:41,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 483 [2020-10-12 13:15:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:41,691 INFO L225 Difference]: With dead ends: 46345 [2020-10-12 13:15:41,691 INFO L226 Difference]: Without dead ends: 24547 [2020-10-12 13:15:41,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:15:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24547 states. [2020-10-12 13:15:41,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24547 to 24486. [2020-10-12 13:15:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24486 states. [2020-10-12 13:15:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24486 states to 24486 states and 28856 transitions. [2020-10-12 13:15:42,006 INFO L78 Accepts]: Start accepts. Automaton has 24486 states and 28856 transitions. Word has length 483 [2020-10-12 13:15:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:42,006 INFO L479 AbstractCegarLoop]: Abstraction has 24486 states and 28856 transitions. [2020-10-12 13:15:42,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:15:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 24486 states and 28856 transitions. [2020-10-12 13:15:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-12 13:15:42,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:42,023 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:42,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 13:15:42,023 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:42,024 INFO L82 PathProgramCache]: Analyzing trace with hash -943507218, now seen corresponding path program 1 times [2020-10-12 13:15:42,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:42,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628504486] [2020-10-12 13:15:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:42,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:43,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:43,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-12 13:15:43,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 13:15:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1680 [2020-10-12 13:15:43,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-10-12 13:15:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:15:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:43,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:43,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:43,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:43,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:15:43,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:43,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:43,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:43,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:43,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:15:43,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 13:15:43,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:15:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:44,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:44,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:15:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 13:15:44,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-12 13:15:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:15:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:44,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-12 13:15:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:44,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:44,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:15:44,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:44,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:15:44,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:44,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:44,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:44,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 13:15:44,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:44,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-12 13:15:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:44,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:44,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:15:44,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:44,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 13:15:44,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:15:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 429 proven. 6 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-12 13:15:44,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628504486] [2020-10-12 13:15:44,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:44,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:15:44,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732199351] [2020-10-12 13:15:44,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:15:44,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:44,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:15:44,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:15:44,660 INFO L87 Difference]: Start difference. First operand 24486 states and 28856 transitions. Second operand 9 states. [2020-10-12 13:15:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:48,942 INFO L93 Difference]: Finished difference Result 46035 states and 54153 transitions. [2020-10-12 13:15:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 13:15:48,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 520 [2020-10-12 13:15:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:48,976 INFO L225 Difference]: With dead ends: 46035 [2020-10-12 13:15:48,976 INFO L226 Difference]: Without dead ends: 21743 [2020-10-12 13:15:48,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-10-12 13:15:49,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2020-10-12 13:15:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 19978. [2020-10-12 13:15:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19978 states. [2020-10-12 13:15:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19978 states to 19978 states and 23168 transitions. [2020-10-12 13:15:49,239 INFO L78 Accepts]: Start accepts. Automaton has 19978 states and 23168 transitions. Word has length 520 [2020-10-12 13:15:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:49,239 INFO L479 AbstractCegarLoop]: Abstraction has 19978 states and 23168 transitions. [2020-10-12 13:15:49,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:15:49,240 INFO L276 IsEmpty]: Start isEmpty. Operand 19978 states and 23168 transitions. [2020-10-12 13:15:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-12 13:15:49,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:49,253 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:49,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 13:15:49,254 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:49,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:49,254 INFO L82 PathProgramCache]: Analyzing trace with hash 349458163, now seen corresponding path program 1 times [2020-10-12 13:15:49,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:49,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422384740] [2020-10-12 13:15:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:49,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:51,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:51,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 539 [2020-10-12 13:15:51,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:15:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1698 [2020-10-12 13:15:51,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 393 [2020-10-12 13:15:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:15:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:51,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:51,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:51,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:51,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:51,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:15:51,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:51,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:51,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:51,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:15:51,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:51,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:15:51,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:51,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:51,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:51,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:51,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:51,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:15:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:51,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:51,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 13:15:51,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:15:51,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:51,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:15:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:51,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:51,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:15:51,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:51,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:15:51,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:15:51,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:51,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-12 13:15:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:51,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:51,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:15:51,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:15:51,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:15:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2020-10-12 13:15:51,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422384740] [2020-10-12 13:15:51,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:51,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:15:51,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618724380] [2020-10-12 13:15:51,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:15:51,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:51,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:15:51,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:15:51,863 INFO L87 Difference]: Start difference. First operand 19978 states and 23168 transitions. Second operand 7 states. [2020-10-12 13:15:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:55,011 INFO L93 Difference]: Finished difference Result 36683 states and 42728 transitions. [2020-10-12 13:15:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:15:55,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-10-12 13:15:55,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:55,042 INFO L225 Difference]: With dead ends: 36683 [2020-10-12 13:15:55,042 INFO L226 Difference]: Without dead ends: 21344 [2020-10-12 13:15:55,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:15:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21344 states. [2020-10-12 13:15:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21344 to 19976. [2020-10-12 13:15:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19976 states. [2020-10-12 13:15:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19976 states to 19976 states and 23156 transitions. [2020-10-12 13:15:55,311 INFO L78 Accepts]: Start accepts. Automaton has 19976 states and 23156 transitions. Word has length 523 [2020-10-12 13:15:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:55,311 INFO L479 AbstractCegarLoop]: Abstraction has 19976 states and 23156 transitions. [2020-10-12 13:15:55,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:15:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 19976 states and 23156 transitions. [2020-10-12 13:15:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-12 13:15:55,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:55,323 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:55,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 13:15:55,323 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:55,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:55,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1985530076, now seen corresponding path program 1 times [2020-10-12 13:15:55,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:55,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982423220] [2020-10-12 13:15:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:56,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:57,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-12 13:15:57,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:15:57,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2283 [2020-10-12 13:15:57,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:57,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:57,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 420 [2020-10-12 13:15:57,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:15:57,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:57,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:57,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:57,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:15:57,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:57,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:57,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:15:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:57,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:57,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:15:57,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 13:15:57,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:15:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:57,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:15:57,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:57,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 13:15:57,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:57,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-12 13:15:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:57,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:15:57,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:57,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:15:57,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:15:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:15:57,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:57,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-12 13:15:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:58,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:58,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:15:58,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 13:15:58,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:15:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-12 13:15:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:58,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:58,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:15:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 13:15:58,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:15:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:15:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:15:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 545 proven. 2 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-12 13:15:58,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982423220] [2020-10-12 13:15:58,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:15:58,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:15:58,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143401356] [2020-10-12 13:15:58,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:15:58,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:58,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:15:58,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:15:58,357 INFO L87 Difference]: Start difference. First operand 19976 states and 23156 transitions. Second operand 8 states. [2020-10-12 13:16:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:02,366 INFO L93 Difference]: Finished difference Result 37856 states and 44153 transitions. [2020-10-12 13:16:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:16:02,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 548 [2020-10-12 13:16:02,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:02,401 INFO L225 Difference]: With dead ends: 37856 [2020-10-12 13:16:02,401 INFO L226 Difference]: Without dead ends: 22513 [2020-10-12 13:16:02,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:16:02,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22513 states. [2020-10-12 13:16:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22513 to 22076. [2020-10-12 13:16:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22076 states. [2020-10-12 13:16:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22076 states to 22076 states and 25486 transitions. [2020-10-12 13:16:02,679 INFO L78 Accepts]: Start accepts. Automaton has 22076 states and 25486 transitions. Word has length 548 [2020-10-12 13:16:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:02,679 INFO L479 AbstractCegarLoop]: Abstraction has 22076 states and 25486 transitions. [2020-10-12 13:16:02,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:16:02,680 INFO L276 IsEmpty]: Start isEmpty. Operand 22076 states and 25486 transitions. [2020-10-12 13:16:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-10-12 13:16:02,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:02,695 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:02,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 13:16:02,695 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:02,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:02,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2135424838, now seen corresponding path program 1 times [2020-10-12 13:16:02,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:02,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590279471] [2020-10-12 13:16:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:04,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 588 [2020-10-12 13:16:04,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:16:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-12 13:16:04,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:04,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:16:04,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-12 13:16:04,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-12 13:16:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:04,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:04,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:04,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:04,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:04,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:04,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:16:04,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:04,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:16:04,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:04,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:04,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:04,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:16:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:04,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:16:04,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:04,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-12 13:16:04,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:04,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 13:16:04,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-12 13:16:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:04,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:04,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 13:16:04,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 13:16:04,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 13:16:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:04,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-12 13:16:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:04,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:16:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 13:16:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:16:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 599 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-12 13:16:05,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590279471] [2020-10-12 13:16:05,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:05,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:05,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950176044] [2020-10-12 13:16:05,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:05,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:05,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:05,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:05,151 INFO L87 Difference]: Start difference. First operand 22076 states and 25486 transitions. Second operand 7 states. [2020-10-12 13:16:09,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:09,133 INFO L93 Difference]: Finished difference Result 42817 states and 49555 transitions. [2020-10-12 13:16:09,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:16:09,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 572 [2020-10-12 13:16:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:09,174 INFO L225 Difference]: With dead ends: 42817 [2020-10-12 13:16:09,174 INFO L226 Difference]: Without dead ends: 24410 [2020-10-12 13:16:09,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:16:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24410 states. [2020-10-12 13:16:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24410 to 22452. [2020-10-12 13:16:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22452 states. [2020-10-12 13:16:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22452 states to 22452 states and 25852 transitions. [2020-10-12 13:16:09,473 INFO L78 Accepts]: Start accepts. Automaton has 22452 states and 25852 transitions. Word has length 572 [2020-10-12 13:16:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:09,473 INFO L479 AbstractCegarLoop]: Abstraction has 22452 states and 25852 transitions. [2020-10-12 13:16:09,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22452 states and 25852 transitions. [2020-10-12 13:16:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-12 13:16:09,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:09,486 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:09,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 13:16:09,487 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:09,487 INFO L82 PathProgramCache]: Analyzing trace with hash 377592708, now seen corresponding path program 1 times [2020-10-12 13:16:09,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:09,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786879861] [2020-10-12 13:16:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-12 13:16:10,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-12 13:16:10,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:10,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-12 13:16:10,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:16:10,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:10,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:16:10,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 13:16:10,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:10,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:16:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 13:16:10,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 13:16:10,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-12 13:16:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:16:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-12 13:16:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:11,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:11,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:16:11,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 13:16:11,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:16:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-10-12 13:16:11,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786879861] [2020-10-12 13:16:11,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:11,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:11,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309499747] [2020-10-12 13:16:11,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:11,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:11,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:11,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:11,358 INFO L87 Difference]: Start difference. First operand 22452 states and 25852 transitions. Second operand 7 states. [2020-10-12 13:16:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:14,508 INFO L93 Difference]: Finished difference Result 41277 states and 47763 transitions. [2020-10-12 13:16:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:16:14,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 578 [2020-10-12 13:16:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:14,556 INFO L225 Difference]: With dead ends: 41277 [2020-10-12 13:16:14,556 INFO L226 Difference]: Without dead ends: 24026 [2020-10-12 13:16:14,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:16:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24026 states. [2020-10-12 13:16:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24026 to 23210. [2020-10-12 13:16:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23210 states. [2020-10-12 13:16:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23210 states to 23210 states and 26725 transitions. [2020-10-12 13:16:14,846 INFO L78 Accepts]: Start accepts. Automaton has 23210 states and 26725 transitions. Word has length 578 [2020-10-12 13:16:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:14,847 INFO L479 AbstractCegarLoop]: Abstraction has 23210 states and 26725 transitions. [2020-10-12 13:16:14,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:14,847 INFO L276 IsEmpty]: Start isEmpty. Operand 23210 states and 26725 transitions. [2020-10-12 13:16:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-12 13:16:14,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:14,860 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:14,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 13:16:14,860 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1512845500, now seen corresponding path program 1 times [2020-10-12 13:16:14,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:14,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846248971] [2020-10-12 13:16:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-12 13:16:18,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:16:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3059 [2020-10-12 13:16:18,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:16:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-12 13:16:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-12 13:16:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:18,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:18,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:16:18,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:16:18,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:16:18,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:16:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:18,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 13:16:18,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:18,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 13:16:18,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 13:16:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-12 13:16:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:16:18,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 13:16:18,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:16:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:16:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-12 13:16:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:18,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:18,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:18,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:16:18,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:16:18,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:16:18,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 581 proven. 93 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-12 13:16:18,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846248971] [2020-10-12 13:16:18,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:18,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:16:18,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33974620] [2020-10-12 13:16:18,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:16:18,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:18,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:16:18,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:16:18,965 INFO L87 Difference]: Start difference. First operand 23210 states and 26725 transitions. Second operand 10 states. [2020-10-12 13:16:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:24,667 INFO L93 Difference]: Finished difference Result 42798 states and 49447 transitions. [2020-10-12 13:16:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 13:16:24,668 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 583 [2020-10-12 13:16:24,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:24,707 INFO L225 Difference]: With dead ends: 42798 [2020-10-12 13:16:24,707 INFO L226 Difference]: Without dead ends: 24797 [2020-10-12 13:16:24,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-10-12 13:16:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24797 states. [2020-10-12 13:16:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24797 to 23218. [2020-10-12 13:16:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23218 states. [2020-10-12 13:16:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23218 states to 23218 states and 26687 transitions. [2020-10-12 13:16:25,001 INFO L78 Accepts]: Start accepts. Automaton has 23218 states and 26687 transitions. Word has length 583 [2020-10-12 13:16:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:25,001 INFO L479 AbstractCegarLoop]: Abstraction has 23218 states and 26687 transitions. [2020-10-12 13:16:25,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:16:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 23218 states and 26687 transitions. [2020-10-12 13:16:25,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-12 13:16:25,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:25,016 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:25,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 13:16:25,016 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:25,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:25,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2116458456, now seen corresponding path program 1 times [2020-10-12 13:16:25,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:25,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353655339] [2020-10-12 13:16:25,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:25,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:29,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:30,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-12 13:16:30,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 13:16:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-12 13:16:30,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:16:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-12 13:16:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-12 13:16:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:30,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:30,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:30,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:30,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:16:30,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:30,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:30,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:30,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:16:30,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:30,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:30,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:30,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:30,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:30,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:16:30,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 13:16:30,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 13:16:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:30,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:16:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:30,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:16:30,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 13:16:30,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:16:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-12 13:16:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:30,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:30,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 13:16:30,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 13:16:30,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:16:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:30,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-10-12 13:16:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:30,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:16:30,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 13:16:30,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:16:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:16:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 867 proven. 110 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-12 13:16:31,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353655339] [2020-10-12 13:16:31,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:31,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:16:31,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341396936] [2020-10-12 13:16:31,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:16:31,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:31,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:16:31,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:16:31,407 INFO L87 Difference]: Start difference. First operand 23218 states and 26687 transitions. Second operand 10 states. [2020-10-12 13:16:38,916 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 13:16:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:39,450 INFO L93 Difference]: Finished difference Result 44558 states and 51616 transitions. [2020-10-12 13:16:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:16:39,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 596 [2020-10-12 13:16:39,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:39,491 INFO L225 Difference]: With dead ends: 44558 [2020-10-12 13:16:39,491 INFO L226 Difference]: Without dead ends: 25191 [2020-10-12 13:16:39,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-12 13:16:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25191 states. [2020-10-12 13:16:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25191 to 24746. [2020-10-12 13:16:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24746 states. [2020-10-12 13:16:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24746 states to 24746 states and 28449 transitions. [2020-10-12 13:16:39,799 INFO L78 Accepts]: Start accepts. Automaton has 24746 states and 28449 transitions. Word has length 596 [2020-10-12 13:16:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:39,799 INFO L479 AbstractCegarLoop]: Abstraction has 24746 states and 28449 transitions. [2020-10-12 13:16:39,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:16:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 24746 states and 28449 transitions. [2020-10-12 13:16:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-12 13:16:39,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:39,814 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:39,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 13:16:39,814 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:39,815 INFO L82 PathProgramCache]: Analyzing trace with hash -126418684, now seen corresponding path program 1 times [2020-10-12 13:16:39,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:39,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865467333] [2020-10-12 13:16:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:41,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:44,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:44,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 628 [2020-10-12 13:16:44,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:16:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 13:16:44,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:16:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-12 13:16:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-12 13:16:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:45,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:45,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:45,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:16:45,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:45,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:45,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:45,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:45,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:45,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:45,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:16:45,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:16:45,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:16:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:45,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:45,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:45,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:16:45,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 13:16:45,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-12 13:16:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:45,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:45,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:16:45,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:16:45,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:16:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:45,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-12 13:16:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:45,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:45,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:45,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 13:16:45,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 13:16:45,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:16:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:45,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-12 13:16:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:45,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:45,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:16:45,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:16:45,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:16:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:16:45,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 828 proven. 21 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-12 13:16:46,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865467333] [2020-10-12 13:16:46,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:46,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:16:46,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358532665] [2020-10-12 13:16:46,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:16:46,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:46,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:16:46,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:16:46,232 INFO L87 Difference]: Start difference. First operand 24746 states and 28449 transitions. Second operand 9 states. [2020-10-12 13:16:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:50,456 INFO L93 Difference]: Finished difference Result 49899 states and 60498 transitions. [2020-10-12 13:16:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:16:50,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 610 [2020-10-12 13:16:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:50,530 INFO L225 Difference]: With dead ends: 49899 [2020-10-12 13:16:50,530 INFO L226 Difference]: Without dead ends: 30536 [2020-10-12 13:16:50,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:16:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30536 states. [2020-10-12 13:16:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30536 to 29760. [2020-10-12 13:16:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29760 states. [2020-10-12 13:16:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29760 states to 29760 states and 34365 transitions. [2020-10-12 13:16:50,989 INFO L78 Accepts]: Start accepts. Automaton has 29760 states and 34365 transitions. Word has length 610 [2020-10-12 13:16:50,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:50,990 INFO L479 AbstractCegarLoop]: Abstraction has 29760 states and 34365 transitions. [2020-10-12 13:16:50,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:16:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 29760 states and 34365 transitions. [2020-10-12 13:16:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2020-10-12 13:16:51,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:51,008 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:51,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 13:16:51,008 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:51,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:51,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1962011010, now seen corresponding path program 1 times [2020-10-12 13:16:51,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:51,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071396646] [2020-10-12 13:16:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking...