/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:49:40,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:49:40,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:49:40,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:49:40,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:49:40,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:49:40,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:49:40,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:49:40,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:49:40,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:49:40,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:49:40,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:49:40,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:49:40,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:49:40,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:49:40,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:49:40,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:49:40,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:49:40,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:49:40,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:49:40,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:49:40,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:49:40,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:49:40,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:49:40,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:49:40,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:49:40,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:49:40,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:49:40,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:49:40,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:49:40,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:49:40,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:49:40,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:49:40,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:49:40,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:49:40,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:49:40,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:49:40,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:49:40,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:49:40,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:49:40,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:49:40,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:49:40,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:49:40,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:49:40,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:49:40,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:49:40,488 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:49:40,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:49:40,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:49:40,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:49:40,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:49:40,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:49:40,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:49:40,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:49:40,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:49:40,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:49:40,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:49:40,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:49:40,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:49:40,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:49:40,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:49:40,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:49:40,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:49:40,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:49:40,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:49:40,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:49:40,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:49:40,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:49:40,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:49:40,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:49:40,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:49:40,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:49:40,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:49:40,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:49:40,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:49:40,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:49:40,880 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:49:40,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29.c [2020-10-13 09:49:40,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a7a205af/2a4db5daa01e4ab08d87532b05591f15/FLAG52d3dddf6 [2020-10-13 09:49:41,819 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:49:41,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label29.c [2020-10-13 09:49:41,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a7a205af/2a4db5daa01e4ab08d87532b05591f15/FLAG52d3dddf6 [2020-10-13 09:49:41,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a7a205af/2a4db5daa01e4ab08d87532b05591f15 [2020-10-13 09:49:41,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:49:41,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:49:41,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:49:41,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:49:41,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:49:41,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:49:41" (1/1) ... [2020-10-13 09:49:41,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:41, skipping insertion in model container [2020-10-13 09:49:41,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:49:41" (1/1) ... [2020-10-13 09:49:41,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:49:42,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:49:43,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:49:43,432 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:49:44,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:49:44,093 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:49:44,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44 WrapperNode [2020-10-13 09:49:44,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:49:44,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:49:44,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:49:44,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:49:44,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (1/1) ... [2020-10-13 09:49:44,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (1/1) ... [2020-10-13 09:49:44,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (1/1) ... [2020-10-13 09:49:44,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (1/1) ... [2020-10-13 09:49:44,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (1/1) ... [2020-10-13 09:49:44,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (1/1) ... [2020-10-13 09:49:44,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (1/1) ... [2020-10-13 09:49:44,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:49:44,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:49:44,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:49:44,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:49:44,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:49:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:49:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:49:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:49:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:49:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:49:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:49:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:49:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:49:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:49:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:49:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:49:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:49:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:49:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:49:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:49:50,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:49:50,861 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:49:50,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:49:50 BoogieIcfgContainer [2020-10-13 09:49:50,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:49:50,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:49:50,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:49:50,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:49:50,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:49:41" (1/3) ... [2020-10-13 09:49:50,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd42a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:49:50, skipping insertion in model container [2020-10-13 09:49:50,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:44" (2/3) ... [2020-10-13 09:49:50,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd42a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:49:50, skipping insertion in model container [2020-10-13 09:49:50,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:49:50" (3/3) ... [2020-10-13 09:49:50,887 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label29.c [2020-10-13 09:49:50,900 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:49:50,910 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:49:50,928 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:49:50,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:49:50,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:49:50,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:49:50,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:49:50,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:49:50,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:49:50,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:49:50,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:49:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:49:51,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 09:49:51,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:51,006 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] [2020-10-13 09:49:51,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1247826190, now seen corresponding path program 1 times [2020-10-13 09:49:51,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:51,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702007155] [2020-10-13 09:49:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:51,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:51,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:51,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 09:49:51,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-13 09:49:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:49:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:49:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 09:49:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:49:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:51,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:51,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:51,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:49:51,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:49:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:49:51,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702007155] [2020-10-13 09:49:51,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:49:51,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:49:51,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650107610] [2020-10-13 09:49:51,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:51,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:51,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:51,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:51,871 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-13 09:50:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:01,600 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:50:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:01,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-13 09:50:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:01,630 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:50:01,630 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:50:01,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:50:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:50:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:50:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2643 transitions. [2020-10-13 09:50:01,783 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2643 transitions. Word has length 45 [2020-10-13 09:50:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:01,783 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2643 transitions. [2020-10-13 09:50:01,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2643 transitions. [2020-10-13 09:50:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 09:50:01,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:01,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:01,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:50:01,790 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:01,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1245198697, now seen corresponding path program 1 times [2020-10-13 09:50:01,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:01,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028495823] [2020-10-13 09:50:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:02,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:02,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:50:02,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 871 [2020-10-13 09:50:02,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:50:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:50:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:02,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:02,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:02,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:02,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:02,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:02,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:02,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:50:02,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:02,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:50:02,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:50:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:02,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028495823] [2020-10-13 09:50:02,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:02,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:02,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521019157] [2020-10-13 09:50:02,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:02,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:02,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:02,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:02,902 INFO L87 Difference]: Start difference. First operand 1425 states and 2643 transitions. Second operand 5 states. [2020-10-13 09:50:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:10,128 INFO L93 Difference]: Finished difference Result 4271 states and 7975 transitions. [2020-10-13 09:50:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:10,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 09:50:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:10,146 INFO L225 Difference]: With dead ends: 4271 [2020-10-13 09:50:10,146 INFO L226 Difference]: Without dead ends: 2852 [2020-10-13 09:50:10,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-13 09:50:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2845. [2020-10-13 09:50:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2845 states. [2020-10-13 09:50:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4634 transitions. [2020-10-13 09:50:10,235 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4634 transitions. Word has length 114 [2020-10-13 09:50:10,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:10,235 INFO L479 AbstractCegarLoop]: Abstraction has 2845 states and 4634 transitions. [2020-10-13 09:50:10,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4634 transitions. [2020-10-13 09:50:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 09:50:10,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:10,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:10,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:50:10,240 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:10,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1966279222, now seen corresponding path program 1 times [2020-10-13 09:50:10,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:10,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309666210] [2020-10-13 09:50:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:10,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:50:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-13 09:50:10,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:50:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:50:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:11,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:11,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:11,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:11,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:11,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:11,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:11,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:11,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:50:11,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:50:11,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:50:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:11,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309666210] [2020-10-13 09:50:11,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:11,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:11,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738270937] [2020-10-13 09:50:11,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:11,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:11,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:11,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:11,228 INFO L87 Difference]: Start difference. First operand 2845 states and 4634 transitions. Second operand 5 states. [2020-10-13 09:50:18,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:18,596 INFO L93 Difference]: Finished difference Result 7111 states and 11992 transitions. [2020-10-13 09:50:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:18,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 09:50:18,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:18,628 INFO L225 Difference]: With dead ends: 7111 [2020-10-13 09:50:18,628 INFO L226 Difference]: Without dead ends: 4272 [2020-10-13 09:50:18,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2020-10-13 09:50:18,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 4268. [2020-10-13 09:50:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4268 states. [2020-10-13 09:50:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 6356 transitions. [2020-10-13 09:50:18,781 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 6356 transitions. Word has length 115 [2020-10-13 09:50:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:18,782 INFO L479 AbstractCegarLoop]: Abstraction has 4268 states and 6356 transitions. [2020-10-13 09:50:18,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 6356 transitions. [2020-10-13 09:50:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 09:50:18,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:18,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:18,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:50:18,792 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:18,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1788227034, now seen corresponding path program 1 times [2020-10-13 09:50:18,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:18,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604265646] [2020-10-13 09:50:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:19,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:19,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 09:50:19,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-13 09:50:19,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 09:50:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:50:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:19,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:19,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:19,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:19,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:19,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:19,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:19,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:19,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:50:19,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:50:19,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:50:19,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:19,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604265646] [2020-10-13 09:50:19,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:19,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:19,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974358477] [2020-10-13 09:50:19,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:19,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:19,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:19,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:19,936 INFO L87 Difference]: Start difference. First operand 4268 states and 6356 transitions. Second operand 5 states. [2020-10-13 09:50:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:31,689 INFO L93 Difference]: Finished difference Result 12782 states and 19241 transitions. [2020-10-13 09:50:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:31,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 09:50:31,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:31,735 INFO L225 Difference]: With dead ends: 12782 [2020-10-13 09:50:31,736 INFO L226 Difference]: Without dead ends: 8520 [2020-10-13 09:50:31,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8520 states. [2020-10-13 09:50:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8520 to 7814. [2020-10-13 09:50:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7814 states. [2020-10-13 09:50:31,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10618 transitions. [2020-10-13 09:50:31,942 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10618 transitions. Word has length 117 [2020-10-13 09:50:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:31,943 INFO L479 AbstractCegarLoop]: Abstraction has 7814 states and 10618 transitions. [2020-10-13 09:50:31,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10618 transitions. [2020-10-13 09:50:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:50:31,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:31,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:31,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:50:31,950 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash -852143621, now seen corresponding path program 1 times [2020-10-13 09:50:31,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:31,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137337646] [2020-10-13 09:50:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:32,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:32,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:33,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:33,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 09:50:33,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:50:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-13 09:50:33,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 09:50:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:50:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:33,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:33,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:33,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:50:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:33,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:33,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:33,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:50:33,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:33,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:50:33,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:50:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:33,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137337646] [2020-10-13 09:50:33,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:33,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:33,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855397895] [2020-10-13 09:50:33,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:33,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:33,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:33,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:33,888 INFO L87 Difference]: Start difference. First operand 7814 states and 10618 transitions. Second operand 5 states. [2020-10-13 09:50:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:39,951 INFO L93 Difference]: Finished difference Result 15656 states and 21304 transitions. [2020-10-13 09:50:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:39,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 09:50:39,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:39,991 INFO L225 Difference]: With dead ends: 15656 [2020-10-13 09:50:39,991 INFO L226 Difference]: Without dead ends: 7818 [2020-10-13 09:50:40,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2020-10-13 09:50:40,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7814. [2020-10-13 09:50:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7814 states. [2020-10-13 09:50:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10608 transitions. [2020-10-13 09:50:40,186 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10608 transitions. Word has length 180 [2020-10-13 09:50:40,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:40,186 INFO L479 AbstractCegarLoop]: Abstraction has 7814 states and 10608 transitions. [2020-10-13 09:50:40,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:40,187 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10608 transitions. [2020-10-13 09:50:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 09:50:40,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:40,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:40,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:50:40,191 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1716184865, now seen corresponding path program 1 times [2020-10-13 09:50:40,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:40,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134410560] [2020-10-13 09:50:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:41,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:41,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 09:50:41,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:50:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1535 [2020-10-13 09:50:41,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-13 09:50:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:50:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:41,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:41,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:41,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:50:41,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:41,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:41,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:41,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:41,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:50:41,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:41,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:50:41,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:50:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:42,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134410560] [2020-10-13 09:50:42,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:42,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:50:42,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379545444] [2020-10-13 09:50:42,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:50:42,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:42,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:50:42,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:42,082 INFO L87 Difference]: Start difference. First operand 7814 states and 10608 transitions. Second operand 6 states. [2020-10-13 09:50:55,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:55,652 INFO L93 Difference]: Finished difference Result 17753 states and 24961 transitions. [2020-10-13 09:50:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:50:55,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-13 09:50:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:55,688 INFO L225 Difference]: With dead ends: 17753 [2020-10-13 09:50:55,688 INFO L226 Difference]: Without dead ends: 9945 [2020-10-13 09:50:55,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:50:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2020-10-13 09:50:55,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 9941. [2020-10-13 09:50:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9941 states. [2020-10-13 09:50:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 13777 transitions. [2020-10-13 09:50:55,880 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 13777 transitions. Word has length 182 [2020-10-13 09:50:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:55,881 INFO L479 AbstractCegarLoop]: Abstraction has 9941 states and 13777 transitions. [2020-10-13 09:50:55,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:50:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 13777 transitions. [2020-10-13 09:50:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-13 09:50:55,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:55,888 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:55,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:50:55,888 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:55,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1656203238, now seen corresponding path program 1 times [2020-10-13 09:50:55,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:55,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204388489] [2020-10-13 09:50:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:55,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:56,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:58,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:58,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-13 09:50:58,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:50:58,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2711 [2020-10-13 09:50:58,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 09:50:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:50:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:58,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:58,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:58,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:58,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:50:58,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:58,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:58,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:58,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:50:58,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:50:58,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:58,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:58,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:58,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:50:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:58,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:58,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:50:58,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:58,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:50:58,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:50:58,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:50:59,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204388489] [2020-10-13 09:50:59,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:59,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:59,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94519131] [2020-10-13 09:50:59,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:59,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:59,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:59,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:59,111 INFO L87 Difference]: Start difference. First operand 9941 states and 13777 transitions. Second operand 5 states. [2020-10-13 09:51:08,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:08,996 INFO L93 Difference]: Finished difference Result 29083 states and 40905 transitions. [2020-10-13 09:51:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:08,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-13 09:51:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:09,069 INFO L225 Difference]: With dead ends: 29083 [2020-10-13 09:51:09,069 INFO L226 Difference]: Without dead ends: 19148 [2020-10-13 09:51:09,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19148 states. [2020-10-13 09:51:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19148 to 18440. [2020-10-13 09:51:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18440 states. [2020-10-13 09:51:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18440 states to 18440 states and 23814 transitions. [2020-10-13 09:51:09,452 INFO L78 Accepts]: Start accepts. Automaton has 18440 states and 23814 transitions. Word has length 245 [2020-10-13 09:51:09,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:09,453 INFO L479 AbstractCegarLoop]: Abstraction has 18440 states and 23814 transitions. [2020-10-13 09:51:09,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:09,453 INFO L276 IsEmpty]: Start isEmpty. Operand 18440 states and 23814 transitions. [2020-10-13 09:51:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 09:51:09,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:09,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:09,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:51:09,465 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:09,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:09,465 INFO L82 PathProgramCache]: Analyzing trace with hash 783412598, now seen corresponding path program 1 times [2020-10-13 09:51:09,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:09,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667872317] [2020-10-13 09:51:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:10,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:10,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:51:10,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-10-13 09:51:10,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-13 09:51:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:51:10,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:11,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:11,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:11,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:11,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:51:11,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:11,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:11,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 09:51:11,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 09:51:11,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-13 09:51:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:11,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667872317] [2020-10-13 09:51:11,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:11,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:51:11,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313705231] [2020-10-13 09:51:11,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:51:11,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:11,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:51:11,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:11,785 INFO L87 Difference]: Start difference. First operand 18440 states and 23814 transitions. Second operand 6 states. [2020-10-13 09:51:23,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:23,522 INFO L93 Difference]: Finished difference Result 42544 states and 56880 transitions. [2020-10-13 09:51:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:23,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2020-10-13 09:51:23,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:23,632 INFO L225 Difference]: With dead ends: 42544 [2020-10-13 09:51:23,632 INFO L226 Difference]: Without dead ends: 24110 [2020-10-13 09:51:23,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:51:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24110 states. [2020-10-13 09:51:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24110 to 22698. [2020-10-13 09:51:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22698 states. [2020-10-13 09:51:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22698 states to 22698 states and 30385 transitions. [2020-10-13 09:51:24,139 INFO L78 Accepts]: Start accepts. Automaton has 22698 states and 30385 transitions. Word has length 275 [2020-10-13 09:51:24,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:24,140 INFO L479 AbstractCegarLoop]: Abstraction has 22698 states and 30385 transitions. [2020-10-13 09:51:24,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:51:24,141 INFO L276 IsEmpty]: Start isEmpty. Operand 22698 states and 30385 transitions. [2020-10-13 09:51:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 09:51:24,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:24,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:24,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:51:24,158 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash -618376137, now seen corresponding path program 1 times [2020-10-13 09:51:24,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:24,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134600225] [2020-10-13 09:51:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:24,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:26,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:28,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:28,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 09:51:28,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:51:28,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4511 [2020-10-13 09:51:28,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:28,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:28,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 277 [2020-10-13 09:51:28,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:51:28,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:28,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:28,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:28,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:28,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:51:28,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:28,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:51:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:51:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:51:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:29,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:29,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:29,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 09:51:29,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:29,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 09:51:29,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 09:51:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:51:29,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134600225] [2020-10-13 09:51:29,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:29,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:29,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268833336] [2020-10-13 09:51:29,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:29,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:29,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:29,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:29,385 INFO L87 Difference]: Start difference. First operand 22698 states and 30385 transitions. Second operand 5 states. [2020-10-13 09:51:35,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:35,829 INFO L93 Difference]: Finished difference Result 45407 states and 60867 transitions. [2020-10-13 09:51:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:35,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-13 09:51:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:35,922 INFO L225 Difference]: With dead ends: 45407 [2020-10-13 09:51:35,923 INFO L226 Difference]: Without dead ends: 22706 [2020-10-13 09:51:35,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22706 states. [2020-10-13 09:51:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22706 to 22698. [2020-10-13 09:51:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22698 states. [2020-10-13 09:51:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22698 states to 22698 states and 30377 transitions. [2020-10-13 09:51:36,401 INFO L78 Accepts]: Start accepts. Automaton has 22698 states and 30377 transitions. Word has length 310 [2020-10-13 09:51:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:36,401 INFO L479 AbstractCegarLoop]: Abstraction has 22698 states and 30377 transitions. [2020-10-13 09:51:36,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 22698 states and 30377 transitions. [2020-10-13 09:51:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-13 09:51:36,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:36,422 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:36,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:51:36,423 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash 120604622, now seen corresponding path program 1 times [2020-10-13 09:51:36,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:36,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26217131] [2020-10-13 09:51:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:36,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:37,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:37,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-13 09:51:37,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-10-13 09:51:37,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:51:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:51:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:51:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:37,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:37,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:37,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:51:37,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:51:37,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:37,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:38,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:38,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:51:38,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:51:38,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:51:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:51:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:38,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:38,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:51:38,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-13 09:51:38,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:51:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 76 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:51:38,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26217131] [2020-10-13 09:51:38,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:38,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:51:38,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142994579] [2020-10-13 09:51:38,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:51:38,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:38,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:51:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:51:38,618 INFO L87 Difference]: Start difference. First operand 22698 states and 30377 transitions. Second operand 7 states. [2020-10-13 09:51:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:49,154 INFO L93 Difference]: Finished difference Result 47768 states and 65375 transitions. [2020-10-13 09:51:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:51:49,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-13 09:51:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:49,252 INFO L225 Difference]: With dead ends: 47768 [2020-10-13 09:51:49,252 INFO L226 Difference]: Without dead ends: 25076 [2020-10-13 09:51:49,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:51:49,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25076 states. [2020-10-13 09:51:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25076 to 25021. [2020-10-13 09:51:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25021 states. [2020-10-13 09:51:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25021 states to 25021 states and 33232 transitions. [2020-10-13 09:51:49,818 INFO L78 Accepts]: Start accepts. Automaton has 25021 states and 33232 transitions. Word has length 329 [2020-10-13 09:51:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:49,819 INFO L479 AbstractCegarLoop]: Abstraction has 25021 states and 33232 transitions. [2020-10-13 09:51:49,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:51:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 25021 states and 33232 transitions. [2020-10-13 09:51:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-13 09:51:49,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:49,847 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:49,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:51:49,848 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:49,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1092325457, now seen corresponding path program 1 times [2020-10-13 09:51:49,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:49,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949502391] [2020-10-13 09:51:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:52,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:52,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-13 09:51:52,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:51:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2889 [2020-10-13 09:51:52,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:51:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:51:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:52,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:52,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:51:52,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:51:53,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:51:53,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:51:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:53,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 09:51:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:53,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:51:53,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-13 09:51:53,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-13 09:51:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:51:53,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949502391] [2020-10-13 09:51:53,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:53,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:51:53,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356548059] [2020-10-13 09:51:53,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:51:53,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:53,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:51:53,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:51:53,657 INFO L87 Difference]: Start difference. First operand 25021 states and 33232 transitions. Second operand 7 states. [2020-10-13 09:52:06,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:06,029 INFO L93 Difference]: Finished difference Result 51171 states and 70584 transitions. [2020-10-13 09:52:06,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:52:06,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-13 09:52:06,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:06,134 INFO L225 Difference]: With dead ends: 51171 [2020-10-13 09:52:06,134 INFO L226 Difference]: Without dead ends: 26134 [2020-10-13 09:52:06,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:52:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26134 states. [2020-10-13 09:52:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26134 to 25834. [2020-10-13 09:52:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25834 states. [2020-10-13 09:52:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25834 states to 25834 states and 34489 transitions. [2020-10-13 09:52:06,820 INFO L78 Accepts]: Start accepts. Automaton has 25834 states and 34489 transitions. Word has length 346 [2020-10-13 09:52:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:06,821 INFO L479 AbstractCegarLoop]: Abstraction has 25834 states and 34489 transitions. [2020-10-13 09:52:06,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:52:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 25834 states and 34489 transitions. [2020-10-13 09:52:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-13 09:52:06,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:06,844 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:52:06,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:52:06,844 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:06,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1975378003, now seen corresponding path program 1 times [2020-10-13 09:52:06,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:06,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376405201] [2020-10-13 09:52:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:09,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:09,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-13 09:52:09,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:52:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2528 [2020-10-13 09:52:09,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:52:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:52:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:09,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:09,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:09,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:52:09,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:09,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:52:09,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:52:09,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:52:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-13 09:52:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:10,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:10,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:52:10,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:10,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-13 09:52:10,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-13 09:52:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:52:10,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376405201] [2020-10-13 09:52:10,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:10,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:52:10,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671456594] [2020-10-13 09:52:10,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:52:10,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:10,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:52:10,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:10,759 INFO L87 Difference]: Start difference. First operand 25834 states and 34489 transitions. Second operand 6 states. [2020-10-13 09:52:19,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:19,364 INFO L93 Difference]: Finished difference Result 51001 states and 68231 transitions. [2020-10-13 09:52:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:52:19,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 408 [2020-10-13 09:52:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:19,443 INFO L225 Difference]: With dead ends: 51001 [2020-10-13 09:52:19,444 INFO L226 Difference]: Without dead ends: 25855 [2020-10-13 09:52:19,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:52:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25855 states. [2020-10-13 09:52:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25855 to 25834. [2020-10-13 09:52:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25834 states. [2020-10-13 09:52:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25834 states to 25834 states and 34466 transitions. [2020-10-13 09:52:19,976 INFO L78 Accepts]: Start accepts. Automaton has 25834 states and 34466 transitions. Word has length 408 [2020-10-13 09:52:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:19,977 INFO L479 AbstractCegarLoop]: Abstraction has 25834 states and 34466 transitions. [2020-10-13 09:52:19,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:52:19,977 INFO L276 IsEmpty]: Start isEmpty. Operand 25834 states and 34466 transitions. [2020-10-13 09:52:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-13 09:52:19,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:19,999 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:20,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:52:20,000 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:20,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:20,000 INFO L82 PathProgramCache]: Analyzing trace with hash 352900474, now seen corresponding path program 1 times [2020-10-13 09:52:20,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:20,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367442148] [2020-10-13 09:52:20,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:22,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-13 09:52:22,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2110 [2020-10-13 09:52:22,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:52:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:52:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:52:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:22,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:22,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:22,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:22,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:52:22,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:52:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:22,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:22,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:52:22,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:52:22,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:52:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:52:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:22,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:22,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:52:22,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:52:22,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:52:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:22,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 09:52:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:22,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:22,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:52:22,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:52:22,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:52:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:22,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 114 proven. 151 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 09:52:22,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367442148] [2020-10-13 09:52:22,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:22,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:52:22,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528256816] [2020-10-13 09:52:22,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:52:22,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:22,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:52:22,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:52:22,543 INFO L87 Difference]: Start difference. First operand 25834 states and 34466 transitions. Second operand 7 states. [2020-10-13 09:52:35,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:35,290 INFO L93 Difference]: Finished difference Result 56296 states and 75999 transitions. [2020-10-13 09:52:35,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:52:35,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-13 09:52:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:35,359 INFO L225 Difference]: With dead ends: 56296 [2020-10-13 09:52:35,359 INFO L226 Difference]: Without dead ends: 30472 [2020-10-13 09:52:35,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:52:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30472 states. [2020-10-13 09:52:35,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30472 to 30299. [2020-10-13 09:52:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30299 states. [2020-10-13 09:52:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30299 states to 30299 states and 39939 transitions. [2020-10-13 09:52:35,920 INFO L78 Accepts]: Start accepts. Automaton has 30299 states and 39939 transitions. Word has length 419 [2020-10-13 09:52:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:35,920 INFO L479 AbstractCegarLoop]: Abstraction has 30299 states and 39939 transitions. [2020-10-13 09:52:35,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:52:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 30299 states and 39939 transitions. [2020-10-13 09:52:35,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-13 09:52:35,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:35,943 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:35,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:52:35,944 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:35,944 INFO L82 PathProgramCache]: Analyzing trace with hash -864435906, now seen corresponding path program 1 times [2020-10-13 09:52:35,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:35,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603518091] [2020-10-13 09:52:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:41,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:41,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-13 09:52:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:52:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 09:52:41,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:52:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:52:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:52:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:41,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:41,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:41,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:41,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:41,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:41,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:41,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:41,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:41,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:52:41,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:52:41,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:52:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:41,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 09:52:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:41,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:41,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:41,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 09:52:41,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 09:52:41,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 09:52:41,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:52:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:41,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:41,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:52:41,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:52:41,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:52:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 212 proven. 97 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 09:52:41,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603518091] [2020-10-13 09:52:41,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:41,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:52:41,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491121952] [2020-10-13 09:52:41,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:52:41,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:41,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:52:41,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:52:41,776 INFO L87 Difference]: Start difference. First operand 30299 states and 39939 transitions. Second operand 7 states. [2020-10-13 09:53:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:04,855 INFO L93 Difference]: Finished difference Result 68630 states and 92146 transitions. [2020-10-13 09:53:04,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:53:04,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 453 [2020-10-13 09:53:04,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:04,941 INFO L225 Difference]: With dead ends: 68630 [2020-10-13 09:53:04,942 INFO L226 Difference]: Without dead ends: 36706 [2020-10-13 09:53:04,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:53:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36706 states. [2020-10-13 09:53:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36706 to 36690. [2020-10-13 09:53:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36690 states. [2020-10-13 09:53:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36690 states to 36690 states and 44902 transitions. [2020-10-13 09:53:05,651 INFO L78 Accepts]: Start accepts. Automaton has 36690 states and 44902 transitions. Word has length 453 [2020-10-13 09:53:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:05,652 INFO L479 AbstractCegarLoop]: Abstraction has 36690 states and 44902 transitions. [2020-10-13 09:53:05,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:53:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 36690 states and 44902 transitions. [2020-10-13 09:53:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-13 09:53:05,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:05,709 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:53:05,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:53:05,709 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:05,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:05,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1576874639, now seen corresponding path program 1 times [2020-10-13 09:53:05,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:05,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399319721] [2020-10-13 09:53:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:09,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:09,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-13 09:53:09,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:53:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3914 [2020-10-13 09:53:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:53:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:53:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:09,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:09,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:09,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:53:09,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:09,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:09,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:09,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:53:09,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:09,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:53:09,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:53:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:53:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:09,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:09,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 09:53:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:53:09,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:53:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 09:53:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:10,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 09:53:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:10,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:10,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:53:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:53:10,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 09:53:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 213 proven. 97 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:53:10,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399319721] [2020-10-13 09:53:10,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:10,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:53:10,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051338138] [2020-10-13 09:53:10,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:53:10,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:10,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:53:10,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:53:10,239 INFO L87 Difference]: Start difference. First operand 36690 states and 44902 transitions. Second operand 7 states. [2020-10-13 09:53:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:21,843 INFO L93 Difference]: Finished difference Result 70146 states and 89437 transitions. [2020-10-13 09:53:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:53:21,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 478 [2020-10-13 09:53:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:21,948 INFO L225 Difference]: With dead ends: 70146 [2020-10-13 09:53:21,949 INFO L226 Difference]: Without dead ends: 37746 [2020-10-13 09:53:22,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:53:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37746 states. [2020-10-13 09:53:23,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37746 to 35940. [2020-10-13 09:53:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35940 states. [2020-10-13 09:53:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35940 states to 35940 states and 42380 transitions. [2020-10-13 09:53:23,135 INFO L78 Accepts]: Start accepts. Automaton has 35940 states and 42380 transitions. Word has length 478 [2020-10-13 09:53:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:23,136 INFO L479 AbstractCegarLoop]: Abstraction has 35940 states and 42380 transitions. [2020-10-13 09:53:23,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:53:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 35940 states and 42380 transitions. [2020-10-13 09:53:23,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-13 09:53:23,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:23,178 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:53:23,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:53:23,179 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:23,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1532766650, now seen corresponding path program 1 times [2020-10-13 09:53:23,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:23,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966824884] [2020-10-13 09:53:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:23,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking...