/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/Problem11_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:11:44,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:11:44,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:11:44,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:11:44,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:11:44,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:11:44,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:11:44,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:11:44,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:11:44,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:11:44,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:11:44,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:11:44,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:11:44,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:11:44,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:11:44,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:11:44,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:11:44,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:11:44,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:11:44,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:11:44,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:11:44,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:11:44,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:11:44,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:11:45,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:11:45,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:11:45,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:11:45,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:11:45,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:11:45,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:11:45,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:11:45,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:11:45,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:11:45,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:11:45,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:11:45,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:11:45,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:11:45,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:11:45,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:11:45,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:11:45,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:11:45,020 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 08:11:45,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:11:45,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:11:45,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:11:45,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:11:45,057 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:11:45,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:11:45,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:11:45,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:11:45,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:11:45,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:11:45,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:11:45,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:11:45,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:11:45,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:11:45,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:11:45,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:11:45,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:11:45,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:11:45,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:11:45,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:11:45,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:11:45,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:11:45,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:11:45,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:11:45,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:11:45,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:11:45,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:11:45,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:11:45,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:11:45,062 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 08:11:45,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:11:45,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:11:45,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:11:45,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:11:45,395 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:11:45,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50.c [2020-10-13 08:11:45,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5367ed387/2564a6b395154187aa98f6adf5b25ddd/FLAG30c98cc67 [2020-10-13 08:11:46,091 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:11:46,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label50.c [2020-10-13 08:11:46,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5367ed387/2564a6b395154187aa98f6adf5b25ddd/FLAG30c98cc67 [2020-10-13 08:11:46,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5367ed387/2564a6b395154187aa98f6adf5b25ddd [2020-10-13 08:11:46,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:11:46,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:11:46,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:11:46,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:11:46,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:11:46,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:46" (1/1) ... [2020-10-13 08:11:46,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e83eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46, skipping insertion in model container [2020-10-13 08:11:46,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:46" (1/1) ... [2020-10-13 08:11:46,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:11:46,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:11:47,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:11:47,099 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:11:47,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:11:47,270 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:11:47,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47 WrapperNode [2020-10-13 08:11:47,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:11:47,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:11:47,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:11:47,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:11:47,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (1/1) ... [2020-10-13 08:11:47,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (1/1) ... [2020-10-13 08:11:47,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (1/1) ... [2020-10-13 08:11:47,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (1/1) ... [2020-10-13 08:11:47,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (1/1) ... [2020-10-13 08:11:47,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (1/1) ... [2020-10-13 08:11:47,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (1/1) ... [2020-10-13 08:11:47,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:11:47,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:11:47,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:11:47,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:11:47,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (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 08:11:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:11:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:11:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:11:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:11:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:11:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:11:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:11:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:11:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:11:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:11:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:11:49,308 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:11:49,308 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:11:49,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:49 BoogieIcfgContainer [2020-10-13 08:11:49,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:11:49,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:11:49,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:11:49,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:11:49,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:11:46" (1/3) ... [2020-10-13 08:11:49,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1992b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:49, skipping insertion in model container [2020-10-13 08:11:49,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:47" (2/3) ... [2020-10-13 08:11:49,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1992b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:49, skipping insertion in model container [2020-10-13 08:11:49,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:49" (3/3) ... [2020-10-13 08:11:49,324 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label50.c [2020-10-13 08:11:49,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:11:49,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:11:49,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:11:49,386 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:11:49,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:11:49,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:11:49,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:11:49,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:11:49,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:11:49,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:11:49,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:11:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-13 08:11:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 08:11:49,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:49,424 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] [2020-10-13 08:11:49,425 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:49,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash -172206893, now seen corresponding path program 1 times [2020-10-13 08:11:49,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:49,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114883843] [2020-10-13 08:11:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 08:11:50,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-13 08:11:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:11:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:11:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 08:11:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:11:50,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:50,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:11:50,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:50,230 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 08:11:50,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114883843] [2020-10-13 08:11:50,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:11:50,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:11:50,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037655203] [2020-10-13 08:11:50,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:11:50,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:50,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:11:50,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:11:50,261 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-13 08:11:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:52,617 INFO L93 Difference]: Finished difference Result 788 states and 1382 transitions. [2020-10-13 08:11:52,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:52,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-13 08:11:52,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:52,637 INFO L225 Difference]: With dead ends: 788 [2020-10-13 08:11:52,637 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 08:11:52,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 08:11:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-13 08:11:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-13 08:11:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-13 08:11:52,729 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 42 [2020-10-13 08:11:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:52,730 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-13 08:11:52,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:11:52,730 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-13 08:11:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 08:11:52,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:52,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:52,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:11:52,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:52,737 INFO L82 PathProgramCache]: Analyzing trace with hash -258983758, now seen corresponding path program 1 times [2020-10-13 08:11:52,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:52,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986177152] [2020-10-13 08:11:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:54,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:54,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:11:54,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:11:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-13 08:11:54,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:11:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 08:11:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:54,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:54,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:54,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:54,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:54,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:11:54,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:54,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:54,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:54,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:54,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:54,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:11:54,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:54,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 08:11:54,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:11:54,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:54,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986177152] [2020-10-13 08:11:54,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:54,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:54,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784165249] [2020-10-13 08:11:54,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:54,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:54,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:54,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:54,745 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 5 states. [2020-10-13 08:11:56,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:56,776 INFO L93 Difference]: Finished difference Result 677 states and 1007 transitions. [2020-10-13 08:11:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:56,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 08:11:56,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:56,782 INFO L225 Difference]: With dead ends: 677 [2020-10-13 08:11:56,782 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 08:11:56,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 08:11:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 08:11:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-13 08:11:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-13 08:11:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 610 transitions. [2020-10-13 08:11:56,845 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 610 transitions. Word has length 114 [2020-10-13 08:11:56,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:56,846 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 610 transitions. [2020-10-13 08:11:56,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 610 transitions. [2020-10-13 08:11:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 08:11:56,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:56,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:56,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:11:56,851 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:56,852 INFO L82 PathProgramCache]: Analyzing trace with hash -590798395, now seen corresponding path program 1 times [2020-10-13 08:11:56,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:56,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106822041] [2020-10-13 08:11:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:58,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:58,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:11:58,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-13 08:11:58,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:11:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:11:58,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:58,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:58,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:58,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:58,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:58,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:58,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:11:58,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:58,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:11:58,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:11:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:58,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106822041] [2020-10-13 08:11:58,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:58,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:58,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050303635] [2020-10-13 08:11:58,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:58,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:58,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:58,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:58,322 INFO L87 Difference]: Start difference. First operand 425 states and 610 transitions. Second operand 5 states. [2020-10-13 08:12:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:00,578 INFO L93 Difference]: Finished difference Result 1248 states and 1810 transitions. [2020-10-13 08:12:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:00,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 08:12:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:00,588 INFO L225 Difference]: With dead ends: 1248 [2020-10-13 08:12:00,589 INFO L226 Difference]: Without dead ends: 829 [2020-10-13 08:12:00,590 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 08:12:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-13 08:12:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 815. [2020-10-13 08:12:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:12:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1087 transitions. [2020-10-13 08:12:00,637 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1087 transitions. Word has length 115 [2020-10-13 08:12:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:00,638 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1087 transitions. [2020-10-13 08:12:00,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1087 transitions. [2020-10-13 08:12:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 08:12:00,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:00,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:00,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:12:00,642 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:00,643 INFO L82 PathProgramCache]: Analyzing trace with hash -735764850, now seen corresponding path program 1 times [2020-10-13 08:12:00,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:00,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421536144] [2020-10-13 08:12:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:01,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:02,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:02,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 08:12:02,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-10-13 08:12:02,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:12:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 08:12:02,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:02,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:02,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:02,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:02,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:02,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:12:02,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 08:12:02,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:12:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:02,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421536144] [2020-10-13 08:12:02,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:02,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:02,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829381790] [2020-10-13 08:12:02,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:02,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:02,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:02,247 INFO L87 Difference]: Start difference. First operand 815 states and 1087 transitions. Second operand 5 states. [2020-10-13 08:12:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:03,944 INFO L93 Difference]: Finished difference Result 1253 states and 1729 transitions. [2020-10-13 08:12:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:03,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 08:12:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:03,955 INFO L225 Difference]: With dead ends: 1253 [2020-10-13 08:12:03,955 INFO L226 Difference]: Without dead ends: 823 [2020-10-13 08:12:03,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 08:12:03,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-13 08:12:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 815. [2020-10-13 08:12:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:12:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1083 transitions. [2020-10-13 08:12:04,005 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1083 transitions. Word has length 116 [2020-10-13 08:12:04,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:04,072 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1083 transitions. [2020-10-13 08:12:04,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:04,072 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1083 transitions. [2020-10-13 08:12:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 08:12:04,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:04,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:04,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:12:04,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash 618979362, now seen corresponding path program 1 times [2020-10-13 08:12:04,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:04,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611663589] [2020-10-13 08:12:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:04,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:05,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:05,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:05,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:12:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-10-13 08:12:05,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:05,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:05,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:12:05,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:12:05,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:05,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:05,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:05,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:12:05,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:12:05,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:05,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:05,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:12:05,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:12:05,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:12:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:05,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611663589] [2020-10-13 08:12:05,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:05,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:05,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347076655] [2020-10-13 08:12:05,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:05,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:05,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:05,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:05,694 INFO L87 Difference]: Start difference. First operand 815 states and 1083 transitions. Second operand 5 states. [2020-10-13 08:12:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:07,416 INFO L93 Difference]: Finished difference Result 1261 states and 1731 transitions. [2020-10-13 08:12:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:07,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 08:12:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:07,424 INFO L225 Difference]: With dead ends: 1261 [2020-10-13 08:12:07,424 INFO L226 Difference]: Without dead ends: 823 [2020-10-13 08:12:07,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 08:12:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-13 08:12:07,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 815. [2020-10-13 08:12:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:12:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1077 transitions. [2020-10-13 08:12:07,469 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1077 transitions. Word has length 122 [2020-10-13 08:12:07,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:07,469 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1077 transitions. [2020-10-13 08:12:07,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1077 transitions. [2020-10-13 08:12:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 08:12:07,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:07,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:07,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:12:07,474 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:07,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1920222170, now seen corresponding path program 1 times [2020-10-13 08:12:07,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:07,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844176849] [2020-10-13 08:12:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:08,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:08,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 08:12:08,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-13 08:12:08,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:08,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 08:12:08,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:12:08,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:08,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:08,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:08,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:08,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:08,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:08,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:08,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:08,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 08:12:08,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:12:08,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:12:08,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:08,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844176849] [2020-10-13 08:12:08,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:08,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:08,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408597993] [2020-10-13 08:12:08,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:08,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:08,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:08,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:08,910 INFO L87 Difference]: Start difference. First operand 815 states and 1077 transitions. Second operand 5 states. [2020-10-13 08:12:10,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:10,485 INFO L93 Difference]: Finished difference Result 1259 states and 1717 transitions. [2020-10-13 08:12:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:10,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 08:12:10,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:10,497 INFO L225 Difference]: With dead ends: 1259 [2020-10-13 08:12:10,497 INFO L226 Difference]: Without dead ends: 823 [2020-10-13 08:12:10,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 08:12:10,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-13 08:12:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 815. [2020-10-13 08:12:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:12:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1075 transitions. [2020-10-13 08:12:10,524 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1075 transitions. Word has length 126 [2020-10-13 08:12:10,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:10,524 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1075 transitions. [2020-10-13 08:12:10,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1075 transitions. [2020-10-13 08:12:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 08:12:10,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:10,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:10,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:12:10,527 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:10,527 INFO L82 PathProgramCache]: Analyzing trace with hash 551041462, now seen corresponding path program 1 times [2020-10-13 08:12:10,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:10,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305656655] [2020-10-13 08:12:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:11,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:11,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:12:11,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:11,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-13 08:12:11,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:12:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:12:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:11,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:11,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:11,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:11,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:11,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:11,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:11,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:11,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:12:11,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:11,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:12:11,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:12:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:11,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305656655] [2020-10-13 08:12:11,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:11,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:11,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274749372] [2020-10-13 08:12:11,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:11,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:11,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:11,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:11,552 INFO L87 Difference]: Start difference. First operand 815 states and 1075 transitions. Second operand 5 states. [2020-10-13 08:12:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:13,859 INFO L93 Difference]: Finished difference Result 2026 states and 2744 transitions. [2020-10-13 08:12:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:13,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 08:12:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:13,872 INFO L225 Difference]: With dead ends: 2026 [2020-10-13 08:12:13,872 INFO L226 Difference]: Without dead ends: 1217 [2020-10-13 08:12:13,876 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 08:12:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-10-13 08:12:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1199. [2020-10-13 08:12:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2020-10-13 08:12:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1585 transitions. [2020-10-13 08:12:13,915 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1585 transitions. Word has length 128 [2020-10-13 08:12:13,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:13,916 INFO L479 AbstractCegarLoop]: Abstraction has 1199 states and 1585 transitions. [2020-10-13 08:12:13,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1585 transitions. [2020-10-13 08:12:13,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 08:12:13,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:13,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:13,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:12:13,920 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:13,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:13,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1954054438, now seen corresponding path program 1 times [2020-10-13 08:12:13,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:13,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841975190] [2020-10-13 08:12:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:13,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:14,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:14,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:12:14,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-13 08:12:14,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:12:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:12:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:12:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:12:14,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:12:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:14,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:14,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:14,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:14,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 08:12:14,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:12:14,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841975190] [2020-10-13 08:12:14,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:12:14,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:12:14,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080848716] [2020-10-13 08:12:14,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:14,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:14,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:14,709 INFO L87 Difference]: Start difference. First operand 1199 states and 1585 transitions. Second operand 7 states. [2020-10-13 08:12:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:17,112 INFO L93 Difference]: Finished difference Result 2813 states and 3713 transitions. [2020-10-13 08:12:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:12:17,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-13 08:12:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:17,121 INFO L225 Difference]: With dead ends: 2813 [2020-10-13 08:12:17,121 INFO L226 Difference]: Without dead ends: 1620 [2020-10-13 08:12:17,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:12:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-10-13 08:12:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1417. [2020-10-13 08:12:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1417 states. [2020-10-13 08:12:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1839 transitions. [2020-10-13 08:12:17,167 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1839 transitions. Word has length 136 [2020-10-13 08:12:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:17,168 INFO L479 AbstractCegarLoop]: Abstraction has 1417 states and 1839 transitions. [2020-10-13 08:12:17,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1839 transitions. [2020-10-13 08:12:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 08:12:17,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:17,173 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:17,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:12:17,174 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:17,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:17,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1737249377, now seen corresponding path program 1 times [2020-10-13 08:12:17,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:17,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489032319] [2020-10-13 08:12:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:18,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:18,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-13 08:12:18,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-10-13 08:12:18,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:12:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:12:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:18,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:18,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:18,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:18,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:18,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:18,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:18,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:18,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:18,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:18,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:18,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:18,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:18,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:12:18,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 08:12:18,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:12:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:12:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:19,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:19,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:19,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 08:12:19,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:19,492 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 08:12:19,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489032319] [2020-10-13 08:12:19,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:19,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:12:19,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096269043] [2020-10-13 08:12:19,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:19,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:19,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:19,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:19,502 INFO L87 Difference]: Start difference. First operand 1417 states and 1839 transitions. Second operand 7 states. [2020-10-13 08:12:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:23,052 INFO L93 Difference]: Finished difference Result 3255 states and 4284 transitions. [2020-10-13 08:12:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:12:23,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-13 08:12:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:23,061 INFO L225 Difference]: With dead ends: 3255 [2020-10-13 08:12:23,061 INFO L226 Difference]: Without dead ends: 2032 [2020-10-13 08:12:23,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:12:23,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2020-10-13 08:12:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1811. [2020-10-13 08:12:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-10-13 08:12:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2302 transitions. [2020-10-13 08:12:23,111 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2302 transitions. Word has length 252 [2020-10-13 08:12:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:23,111 INFO L479 AbstractCegarLoop]: Abstraction has 1811 states and 2302 transitions. [2020-10-13 08:12:23,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2302 transitions. [2020-10-13 08:12:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-13 08:12:23,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:23,117 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:23,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:12:23,117 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:23,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:23,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1936845333, now seen corresponding path program 1 times [2020-10-13 08:12:23,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:23,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818661167] [2020-10-13 08:12:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:24,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:24,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 08:12:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1583 [2020-10-13 08:12:24,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 08:12:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:12:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:24,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:24,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:24,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:24,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:24,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:24,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:24,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:25,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:25,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:12:25,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:25,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:12:25,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 08:12:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:12:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:25,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:25,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:25,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:25,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 08:12:25,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:25,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:25,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:25,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:25,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:25,384 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 08:12:25,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818661167] [2020-10-13 08:12:25,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:25,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:12:25,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909428498] [2020-10-13 08:12:25,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:25,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:25,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:25,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:25,387 INFO L87 Difference]: Start difference. First operand 1811 states and 2302 transitions. Second operand 7 states. [2020-10-13 08:12:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:28,254 INFO L93 Difference]: Finished difference Result 3906 states and 5298 transitions. [2020-10-13 08:12:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:12:28,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-13 08:12:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:28,267 INFO L225 Difference]: With dead ends: 3906 [2020-10-13 08:12:28,267 INFO L226 Difference]: Without dead ends: 2289 [2020-10-13 08:12:28,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:12:28,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-10-13 08:12:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2210. [2020-10-13 08:12:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2210 states. [2020-10-13 08:12:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2777 transitions. [2020-10-13 08:12:28,336 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2777 transitions. Word has length 262 [2020-10-13 08:12:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:28,337 INFO L479 AbstractCegarLoop]: Abstraction has 2210 states and 2777 transitions. [2020-10-13 08:12:28,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2777 transitions. [2020-10-13 08:12:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-13 08:12:28,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:28,343 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:28,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:12:28,344 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:28,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:28,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1842109668, now seen corresponding path program 1 times [2020-10-13 08:12:28,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:28,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117796048] [2020-10-13 08:12:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:29,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:29,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 08:12:29,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:29,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-13 08:12:29,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-13 08:12:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:12:29,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:12:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:29,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:29,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:29,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:29,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:29,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:29,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:29,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 08:12:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:30,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:30,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:30,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:12:30,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:30,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:12:30,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:12:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 08:12:30,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117796048] [2020-10-13 08:12:30,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:30,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:30,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002579132] [2020-10-13 08:12:30,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:30,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:30,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:30,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:30,200 INFO L87 Difference]: Start difference. First operand 2210 states and 2777 transitions. Second operand 5 states. [2020-10-13 08:12:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:32,442 INFO L93 Difference]: Finished difference Result 5021 states and 6483 transitions. [2020-10-13 08:12:32,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:32,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-13 08:12:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:32,461 INFO L225 Difference]: With dead ends: 5021 [2020-10-13 08:12:32,461 INFO L226 Difference]: Without dead ends: 3005 [2020-10-13 08:12:32,465 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 08:12:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-10-13 08:12:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2791. [2020-10-13 08:12:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-10-13 08:12:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3455 transitions. [2020-10-13 08:12:32,534 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3455 transitions. Word has length 262 [2020-10-13 08:12:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:32,535 INFO L479 AbstractCegarLoop]: Abstraction has 2791 states and 3455 transitions. [2020-10-13 08:12:32,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3455 transitions. [2020-10-13 08:12:32,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 08:12:32,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:32,541 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:32,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:12:32,542 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:32,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:32,542 INFO L82 PathProgramCache]: Analyzing trace with hash 420937208, now seen corresponding path program 1 times [2020-10-13 08:12:32,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:32,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849266400] [2020-10-13 08:12:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:34,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-13 08:12:34,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:34,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-13 08:12:34,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:34,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:34,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-13 08:12:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:12:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:34,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:34,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:34,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:34,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:34,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:34,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:34,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 08:12:34,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:34,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:34,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 08:12:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:12:34,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:12:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 08:12:34,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849266400] [2020-10-13 08:12:34,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:34,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:34,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671197634] [2020-10-13 08:12:34,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:34,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:34,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:34,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:34,737 INFO L87 Difference]: Start difference. First operand 2791 states and 3455 transitions. Second operand 5 states. [2020-10-13 08:12:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:36,448 INFO L93 Difference]: Finished difference Result 4270 states and 5437 transitions. [2020-10-13 08:12:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:36,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-13 08:12:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:36,459 INFO L225 Difference]: With dead ends: 4270 [2020-10-13 08:12:36,460 INFO L226 Difference]: Without dead ends: 2809 [2020-10-13 08:12:36,464 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 08:12:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2020-10-13 08:12:36,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2791. [2020-10-13 08:12:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-10-13 08:12:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3442 transitions. [2020-10-13 08:12:36,525 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3442 transitions. Word has length 264 [2020-10-13 08:12:36,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:36,525 INFO L479 AbstractCegarLoop]: Abstraction has 2791 states and 3442 transitions. [2020-10-13 08:12:36,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3442 transitions. [2020-10-13 08:12:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-13 08:12:36,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:36,533 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:36,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:12:36,533 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:36,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:36,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1644547473, now seen corresponding path program 1 times [2020-10-13 08:12:36,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:36,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458861405] [2020-10-13 08:12:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:36,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:36,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:40,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:40,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 08:12:40,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:12:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4161 [2020-10-13 08:12:40,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:12:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:12:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:40,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:40,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:40,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:40,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:40,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:40,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 08:12:40,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-13 08:12:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:12:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:41,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:41,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:12:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:12:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 08:12:41,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458861405] [2020-10-13 08:12:41,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:41,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:41,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923238255] [2020-10-13 08:12:41,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:41,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:41,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:41,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:41,165 INFO L87 Difference]: Start difference. First operand 2791 states and 3442 transitions. Second operand 5 states. [2020-10-13 08:12:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:43,264 INFO L93 Difference]: Finished difference Result 6173 states and 7914 transitions. [2020-10-13 08:12:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:43,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2020-10-13 08:12:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:43,278 INFO L225 Difference]: With dead ends: 6173 [2020-10-13 08:12:43,279 INFO L226 Difference]: Without dead ends: 3576 [2020-10-13 08:12:43,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 08:12:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2020-10-13 08:12:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3179. [2020-10-13 08:12:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-13 08:12:43,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 3959 transitions. [2020-10-13 08:12:43,368 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 3959 transitions. Word has length 267 [2020-10-13 08:12:43,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:43,368 INFO L479 AbstractCegarLoop]: Abstraction has 3179 states and 3959 transitions. [2020-10-13 08:12:43,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 3959 transitions. [2020-10-13 08:12:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-13 08:12:43,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:43,378 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:43,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:12:43,379 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:43,379 INFO L82 PathProgramCache]: Analyzing trace with hash 617600352, now seen corresponding path program 1 times [2020-10-13 08:12:43,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:43,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176840522] [2020-10-13 08:12:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:43,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:44,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:44,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-13 08:12:44,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:44,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1387 [2020-10-13 08:12:44,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-13 08:12:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:12:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:44,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:44,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:44,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:44,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:44,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:44,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:44,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:44,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:44,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:44,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:44,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:12:44,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:44,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:45,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:45,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:12:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:12:45,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:12:45,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 08:12:45,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176840522] [2020-10-13 08:12:45,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:45,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:45,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903717248] [2020-10-13 08:12:45,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:45,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:45,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:45,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:45,232 INFO L87 Difference]: Start difference. First operand 3179 states and 3959 transitions. Second operand 5 states. [2020-10-13 08:12:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:47,632 INFO L93 Difference]: Finished difference Result 6379 states and 7955 transitions. [2020-10-13 08:12:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:47,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2020-10-13 08:12:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:47,654 INFO L225 Difference]: With dead ends: 6379 [2020-10-13 08:12:47,654 INFO L226 Difference]: Without dead ends: 4372 [2020-10-13 08:12:47,659 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 08:12:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4372 states. [2020-10-13 08:12:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4372 to 4351. [2020-10-13 08:12:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4351 states. [2020-10-13 08:12:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 5334 transitions. [2020-10-13 08:12:47,742 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 5334 transitions. Word has length 276 [2020-10-13 08:12:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:47,743 INFO L479 AbstractCegarLoop]: Abstraction has 4351 states and 5334 transitions. [2020-10-13 08:12:47,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 5334 transitions. [2020-10-13 08:12:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 08:12:47,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:47,749 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:47,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:12:47,750 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:47,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:47,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1995646118, now seen corresponding path program 1 times [2020-10-13 08:12:47,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:47,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453973557] [2020-10-13 08:12:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:48,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 08:12:48,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-13 08:12:48,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:12:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:12:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:49,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:49,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:49,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:12:49,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 08:12:49,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:12:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:49,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:12:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:49,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:49,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:49,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:49,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 08:12:49,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:49,955 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 08:12:49,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453973557] [2020-10-13 08:12:49,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:49,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:12:49,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492416759] [2020-10-13 08:12:49,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:12:49,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:49,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:12:49,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:12:49,958 INFO L87 Difference]: Start difference. First operand 4351 states and 5334 transitions. Second operand 8 states. [2020-10-13 08:12:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:53,811 INFO L93 Difference]: Finished difference Result 9758 states and 12018 transitions. [2020-10-13 08:12:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 08:12:53,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2020-10-13 08:12:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:53,847 INFO L225 Difference]: With dead ends: 9758 [2020-10-13 08:12:53,847 INFO L226 Difference]: Without dead ends: 5601 [2020-10-13 08:12:53,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-13 08:12:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5601 states. [2020-10-13 08:12:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5601 to 5343. [2020-10-13 08:12:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5343 states. [2020-10-13 08:12:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 6426 transitions. [2020-10-13 08:12:53,992 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 6426 transitions. Word has length 283 [2020-10-13 08:12:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:53,993 INFO L479 AbstractCegarLoop]: Abstraction has 5343 states and 6426 transitions. [2020-10-13 08:12:53,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:12:53,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 6426 transitions. [2020-10-13 08:12:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 08:12:54,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:54,001 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:54,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:12:54,001 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:54,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1536479588, now seen corresponding path program 1 times [2020-10-13 08:12:54,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:54,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073953712] [2020-10-13 08:12:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:54,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:54,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-13 08:12:54,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:54,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-13 08:12:54,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 08:12:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:12:54,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:54,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:54,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:54,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:54,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:54,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:54,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:54,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:54,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:12:54,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:12:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:12:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:54,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:54,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:54,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 08:12:54,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 08:12:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-13 08:12:54,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073953712] [2020-10-13 08:12:55,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:55,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:55,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71082062] [2020-10-13 08:12:55,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:55,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:55,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:55,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:55,003 INFO L87 Difference]: Start difference. First operand 5343 states and 6426 transitions. Second operand 5 states. [2020-10-13 08:12:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:57,230 INFO L93 Difference]: Finished difference Result 9346 states and 11325 transitions. [2020-10-13 08:12:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:57,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2020-10-13 08:12:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:57,246 INFO L225 Difference]: With dead ends: 9346 [2020-10-13 08:12:57,246 INFO L226 Difference]: Without dead ends: 5365 [2020-10-13 08:12:57,255 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 08:12:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2020-10-13 08:12:57,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 5339. [2020-10-13 08:12:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5339 states. [2020-10-13 08:12:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 6257 transitions. [2020-10-13 08:12:57,365 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 6257 transitions. Word has length 289 [2020-10-13 08:12:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:57,366 INFO L479 AbstractCegarLoop]: Abstraction has 5339 states and 6257 transitions. [2020-10-13 08:12:57,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 6257 transitions. [2020-10-13 08:12:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 08:12:57,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:57,376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:57,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:12:57,377 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:57,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1965165918, now seen corresponding path program 1 times [2020-10-13 08:12:57,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:57,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163647958] [2020-10-13 08:12:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:59,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:59,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-13 08:12:59,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2015 [2020-10-13 08:12:59,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 302 [2020-10-13 08:12:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:12:59,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:59,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:59,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:59,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:59,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:59,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:12:59,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:59,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:59,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:59,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:12:59,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:12:59,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:59,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:12:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:59,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:59,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:12:59,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 08:12:59,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:12:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-13 08:13:00,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163647958] [2020-10-13 08:13:00,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:00,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:13:00,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314284895] [2020-10-13 08:13:00,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:00,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:00,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:00,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:00,015 INFO L87 Difference]: Start difference. First operand 5339 states and 6257 transitions. Second operand 5 states. [2020-10-13 08:13:01,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:01,784 INFO L93 Difference]: Finished difference Result 9353 states and 11025 transitions. [2020-10-13 08:13:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:13:01,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-13 08:13:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:01,801 INFO L225 Difference]: With dead ends: 9353 [2020-10-13 08:13:01,801 INFO L226 Difference]: Without dead ends: 5363 [2020-10-13 08:13:01,812 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 08:13:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2020-10-13 08:13:01,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5337. [2020-10-13 08:13:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5337 states. [2020-10-13 08:13:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5337 states to 5337 states and 6234 transitions. [2020-10-13 08:13:01,918 INFO L78 Accepts]: Start accepts. Automaton has 5337 states and 6234 transitions. Word has length 332 [2020-10-13 08:13:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:01,920 INFO L479 AbstractCegarLoop]: Abstraction has 5337 states and 6234 transitions. [2020-10-13 08:13:01,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:13:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5337 states and 6234 transitions. [2020-10-13 08:13:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-13 08:13:01,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:01,932 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:01,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:13:01,933 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:01,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1838585623, now seen corresponding path program 1 times [2020-10-13 08:13:01,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:01,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822618388] [2020-10-13 08:13:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:02,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:03,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-13 08:13:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-13 08:13:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 08:13:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:13:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:03,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:03,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:03,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:03,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:03,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:03,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:03,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:03,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:03,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:13:03,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:03,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:03,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:03,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:13:03,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:13:03,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:13:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:13:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:03,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:04,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:04,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:04,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-13 08:13:04,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:13:04,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822618388] [2020-10-13 08:13:04,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:04,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:04,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536127057] [2020-10-13 08:13:04,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:04,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:04,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:04,146 INFO L87 Difference]: Start difference. First operand 5337 states and 6234 transitions. Second operand 7 states. [2020-10-13 08:13:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:07,356 INFO L93 Difference]: Finished difference Result 9759 states and 11417 transitions. [2020-10-13 08:13:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:13:07,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-13 08:13:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:07,380 INFO L225 Difference]: With dead ends: 9759 [2020-10-13 08:13:07,380 INFO L226 Difference]: Without dead ends: 5762 [2020-10-13 08:13:07,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:13:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2020-10-13 08:13:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 5341. [2020-10-13 08:13:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5341 states. [2020-10-13 08:13:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 6236 transitions. [2020-10-13 08:13:07,489 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 6236 transitions. Word has length 336 [2020-10-13 08:13:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:07,490 INFO L479 AbstractCegarLoop]: Abstraction has 5341 states and 6236 transitions. [2020-10-13 08:13:07,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 6236 transitions. [2020-10-13 08:13:07,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-13 08:13:07,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:07,502 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:07,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:13:07,502 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:07,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1367246150, now seen corresponding path program 1 times [2020-10-13 08:13:07,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:07,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044090035] [2020-10-13 08:13:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-13 08:13:08,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-13 08:13:08,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-13 08:13:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 08:13:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:08,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:08,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:08,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:08,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:08,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:13:08,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:08,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:08,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:08,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:13:08,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:13:08,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-13 08:13:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 08:13:08,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044090035] [2020-10-13 08:13:08,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:08,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:13:08,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217463829] [2020-10-13 08:13:08,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:08,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:08,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:08,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:08,505 INFO L87 Difference]: Start difference. First operand 5341 states and 6236 transitions. Second operand 5 states. [2020-10-13 08:13:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:10,692 INFO L93 Difference]: Finished difference Result 12824 states and 15379 transitions. [2020-10-13 08:13:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:13:10,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 348 [2020-10-13 08:13:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:10,712 INFO L225 Difference]: With dead ends: 12824 [2020-10-13 08:13:10,712 INFO L226 Difference]: Without dead ends: 7867 [2020-10-13 08:13:10,722 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 08:13:10,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7867 states. [2020-10-13 08:13:10,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7867 to 7842. [2020-10-13 08:13:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7842 states. [2020-10-13 08:13:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 9309 transitions. [2020-10-13 08:13:10,872 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 9309 transitions. Word has length 348 [2020-10-13 08:13:10,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:10,873 INFO L479 AbstractCegarLoop]: Abstraction has 7842 states and 9309 transitions. [2020-10-13 08:13:10,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:13:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 9309 transitions. [2020-10-13 08:13:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-13 08:13:10,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:10,895 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:10,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:13:10,895 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:10,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:10,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1291524763, now seen corresponding path program 1 times [2020-10-13 08:13:10,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:10,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183068327] [2020-10-13 08:13:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:11,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:11,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-13 08:13:11,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-13 08:13:11,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:13:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:13:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:12,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:12,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:13:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:12,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:12,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:13:12,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:12,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:13:12,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:12,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:13:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:13:12,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:13:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:13:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:12,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-13 08:13:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:12,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:12,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:12,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 08:13:12,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:12,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 08:13:12,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183068327] [2020-10-13 08:13:12,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:12,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:13:12,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958067453] [2020-10-13 08:13:12,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:13:12,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:12,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:13:12,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:13:12,840 INFO L87 Difference]: Start difference. First operand 7842 states and 9309 transitions. Second operand 6 states. [2020-10-13 08:13:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:14,897 INFO L93 Difference]: Finished difference Result 14189 states and 16916 transitions. [2020-10-13 08:13:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:13:14,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 363 [2020-10-13 08:13:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:14,918 INFO L225 Difference]: With dead ends: 14189 [2020-10-13 08:13:14,919 INFO L226 Difference]: Without dead ends: 7879 [2020-10-13 08:13:14,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:13:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7879 states. [2020-10-13 08:13:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7879 to 7840. [2020-10-13 08:13:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7840 states. [2020-10-13 08:13:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 9288 transitions. [2020-10-13 08:13:15,063 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 9288 transitions. Word has length 363 [2020-10-13 08:13:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:15,064 INFO L479 AbstractCegarLoop]: Abstraction has 7840 states and 9288 transitions. [2020-10-13 08:13:15,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:13:15,064 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 9288 transitions. [2020-10-13 08:13:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-13 08:13:15,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:15,078 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:15,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:13:15,078 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:15,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:15,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1017091999, now seen corresponding path program 1 times [2020-10-13 08:13:15,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:15,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177675797] [2020-10-13 08:13:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:15,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:18,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:18,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 08:13:18,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:13:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3324 [2020-10-13 08:13:18,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:13:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 254 [2020-10-13 08:13:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:13:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:18,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:18,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:18,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:18,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:18,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:18,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:18,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:13:18,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:18,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:19,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:13:19,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-13 08:13:19,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:13:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:13:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 08:13:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:19,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:19,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:19,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 08:13:19,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-13 08:13:19,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177675797] [2020-10-13 08:13:19,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:19,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:13:19,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350518859] [2020-10-13 08:13:19,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:13:19,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:19,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:13:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:13:19,786 INFO L87 Difference]: Start difference. First operand 7840 states and 9288 transitions. Second operand 8 states. [2020-10-13 08:13:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:23,958 INFO L93 Difference]: Finished difference Result 17439 states and 20891 transitions. [2020-10-13 08:13:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 08:13:23,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 380 [2020-10-13 08:13:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:23,980 INFO L225 Difference]: With dead ends: 17439 [2020-10-13 08:13:23,980 INFO L226 Difference]: Without dead ends: 11151 [2020-10-13 08:13:23,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-13 08:13:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11151 states. [2020-10-13 08:13:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11151 to 10912. [2020-10-13 08:13:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10912 states. [2020-10-13 08:13:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 13026 transitions. [2020-10-13 08:13:24,167 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 13026 transitions. Word has length 380 [2020-10-13 08:13:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:24,168 INFO L479 AbstractCegarLoop]: Abstraction has 10912 states and 13026 transitions. [2020-10-13 08:13:24,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:13:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 13026 transitions. [2020-10-13 08:13:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-13 08:13:24,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:24,184 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:24,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:13:24,184 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:24,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2017022356, now seen corresponding path program 1 times [2020-10-13 08:13:24,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:24,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802068749] [2020-10-13 08:13:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 08:13:26,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:26,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2103 [2020-10-13 08:13:26,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 353 [2020-10-13 08:13:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:13:26,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:26,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:26,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:26,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:13:26,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:13:26,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:26,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:13:26,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:26,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:26,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:26,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-13 08:13:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:26,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:13:26,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:13:26,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 08:13:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 108 proven. 3 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-13 08:13:26,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802068749] [2020-10-13 08:13:26,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:26,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:13:26,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248343362] [2020-10-13 08:13:26,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:13:26,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:26,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:13:26,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:13:26,737 INFO L87 Difference]: Start difference. First operand 10912 states and 13026 transitions. Second operand 6 states. [2020-10-13 08:13:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:30,108 INFO L93 Difference]: Finished difference Result 25109 states and 30325 transitions. [2020-10-13 08:13:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:13:30,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 381 [2020-10-13 08:13:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:30,146 INFO L225 Difference]: With dead ends: 25109 [2020-10-13 08:13:30,146 INFO L226 Difference]: Without dead ends: 14581 [2020-10-13 08:13:30,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 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 08:13:30,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14581 states. [2020-10-13 08:13:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14581 to 13576. [2020-10-13 08:13:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13576 states. [2020-10-13 08:13:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13576 states to 13576 states and 16500 transitions. [2020-10-13 08:13:30,451 INFO L78 Accepts]: Start accepts. Automaton has 13576 states and 16500 transitions. Word has length 381 [2020-10-13 08:13:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:30,452 INFO L479 AbstractCegarLoop]: Abstraction has 13576 states and 16500 transitions. [2020-10-13 08:13:30,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:13:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 13576 states and 16500 transitions. [2020-10-13 08:13:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-13 08:13:30,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:30,470 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:30,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:13:30,471 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:30,471 INFO L82 PathProgramCache]: Analyzing trace with hash -279989483, now seen corresponding path program 1 times [2020-10-13 08:13:30,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:30,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985084695] [2020-10-13 08:13:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:30,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:31,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:31,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:33,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-13 08:13:33,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:13:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3317 [2020-10-13 08:13:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-13 08:13:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:33,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:33,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:33,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:33,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:33,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:33,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:33,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:13:33,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:34,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:34,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:34,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:13:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:13:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-13 08:13:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-13 08:13:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:34,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:34,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:34,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:34,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 08:13:34,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:13:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-13 08:13:34,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985084695] [2020-10-13 08:13:34,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:34,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:13:34,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59631500] [2020-10-13 08:13:34,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:34,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:34,279 INFO L87 Difference]: Start difference. First operand 13576 states and 16500 transitions. Second operand 5 states. [2020-10-13 08:13:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:36,811 INFO L93 Difference]: Finished difference Result 27132 states and 33268 transitions. [2020-10-13 08:13:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:13:36,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 404 [2020-10-13 08:13:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:36,850 INFO L225 Difference]: With dead ends: 27132 [2020-10-13 08:13:36,850 INFO L226 Difference]: Without dead ends: 14537 [2020-10-13 08:13:36,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 08:13:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14537 states. [2020-10-13 08:13:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14537 to 14314. [2020-10-13 08:13:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14314 states. [2020-10-13 08:13:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14314 states to 14314 states and 17199 transitions. [2020-10-13 08:13:37,234 INFO L78 Accepts]: Start accepts. Automaton has 14314 states and 17199 transitions. Word has length 404 [2020-10-13 08:13:37,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:37,235 INFO L479 AbstractCegarLoop]: Abstraction has 14314 states and 17199 transitions. [2020-10-13 08:13:37,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:13:37,235 INFO L276 IsEmpty]: Start isEmpty. Operand 14314 states and 17199 transitions. [2020-10-13 08:13:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-13 08:13:37,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:37,252 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:37,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:13:37,253 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:37,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1787626076, now seen corresponding path program 1 times [2020-10-13 08:13:37,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:37,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709166558] [2020-10-13 08:13:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:39,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:39,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 08:13:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1931 [2020-10-13 08:13:39,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:13:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:39,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:39,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:39,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:39,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:39,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:39,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:39,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:39,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:39,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:39,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:39,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:13:39,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:39,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:39,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:39,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:39,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:39,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:39,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:39,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:13:39,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 08:13:39,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:13:39,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:39,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:13:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:39,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:39,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:39,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:13:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-13 08:13:40,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709166558] [2020-10-13 08:13:40,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:40,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:40,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502061387] [2020-10-13 08:13:40,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:40,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:40,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:40,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:40,266 INFO L87 Difference]: Start difference. First operand 14314 states and 17199 transitions. Second operand 7 states. [2020-10-13 08:13:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:43,862 INFO L93 Difference]: Finished difference Result 26505 states and 32491 transitions. [2020-10-13 08:13:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:13:43,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-13 08:13:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:43,909 INFO L225 Difference]: With dead ends: 26505 [2020-10-13 08:13:43,909 INFO L226 Difference]: Without dead ends: 14509 [2020-10-13 08:13:43,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14509 states. [2020-10-13 08:13:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14509 to 14320. [2020-10-13 08:13:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14320 states. [2020-10-13 08:13:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14320 states to 14320 states and 17172 transitions. [2020-10-13 08:13:44,228 INFO L78 Accepts]: Start accepts. Automaton has 14320 states and 17172 transitions. Word has length 405 [2020-10-13 08:13:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:44,229 INFO L479 AbstractCegarLoop]: Abstraction has 14320 states and 17172 transitions. [2020-10-13 08:13:44,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 14320 states and 17172 transitions. [2020-10-13 08:13:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-13 08:13:44,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:44,247 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:44,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:13:44,247 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:44,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:44,248 INFO L82 PathProgramCache]: Analyzing trace with hash 748882487, now seen corresponding path program 1 times [2020-10-13 08:13:44,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:44,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124110850] [2020-10-13 08:13:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:44,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:46,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:46,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-13 08:13:46,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:13:46,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2247 [2020-10-13 08:13:46,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-13 08:13:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 08:13:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:46,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:46,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:46,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:46,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:46,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:46,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:46,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:46,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:46,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 08:13:46,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:13:46,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:13:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:46,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 08:13:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:46,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:46,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:13:46,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:46,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:13:46,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:13:46,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-13 08:13:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:47,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:47,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:13:47,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:13:47,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:47,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 193 proven. 86 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 08:13:47,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124110850] [2020-10-13 08:13:47,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:47,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:47,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879421853] [2020-10-13 08:13:47,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:47,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:47,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:47,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:47,176 INFO L87 Difference]: Start difference. First operand 14320 states and 17172 transitions. Second operand 7 states. [2020-10-13 08:13:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:49,812 INFO L93 Difference]: Finished difference Result 28717 states and 34463 transitions. [2020-10-13 08:13:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:13:49,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-13 08:13:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:49,839 INFO L225 Difference]: With dead ends: 28717 [2020-10-13 08:13:49,840 INFO L226 Difference]: Without dead ends: 14781 [2020-10-13 08:13:49,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14781 states. [2020-10-13 08:13:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14781 to 14352. [2020-10-13 08:13:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14352 states. [2020-10-13 08:13:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14352 states to 14352 states and 16934 transitions. [2020-10-13 08:13:50,113 INFO L78 Accepts]: Start accepts. Automaton has 14352 states and 16934 transitions. Word has length 408 [2020-10-13 08:13:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:50,114 INFO L479 AbstractCegarLoop]: Abstraction has 14352 states and 16934 transitions. [2020-10-13 08:13:50,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 14352 states and 16934 transitions. [2020-10-13 08:13:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-13 08:13:50,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:50,133 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:13:50,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:13:50,133 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:50,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:50,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1373600300, now seen corresponding path program 1 times [2020-10-13 08:13:50,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:50,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707102308] [2020-10-13 08:13:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:52,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:52,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-13 08:13:52,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:52,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2537 [2020-10-13 08:13:52,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 08:13:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:52,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:52,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:52,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:52,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:52,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:52,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:52,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:52,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:52,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:13:52,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:53,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:53,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 08:13:53,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:13:53,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 08:13:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 08:13:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:53,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:53,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:53,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:53,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:13:53,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-13 08:13:53,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707102308] [2020-10-13 08:13:53,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:53,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:53,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175713991] [2020-10-13 08:13:53,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:53,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:53,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:53,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:53,562 INFO L87 Difference]: Start difference. First operand 14352 states and 16934 transitions. Second operand 7 states. [2020-10-13 08:13:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:56,521 INFO L93 Difference]: Finished difference Result 27592 states and 32557 transitions. [2020-10-13 08:13:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:13:56,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2020-10-13 08:13:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:56,554 INFO L225 Difference]: With dead ends: 27592 [2020-10-13 08:13:56,554 INFO L226 Difference]: Without dead ends: 15560 [2020-10-13 08:13:56,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:13:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15560 states. [2020-10-13 08:13:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15560 to 13034. [2020-10-13 08:13:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13034 states. [2020-10-13 08:13:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13034 states to 13034 states and 15531 transitions. [2020-10-13 08:13:56,784 INFO L78 Accepts]: Start accepts. Automaton has 13034 states and 15531 transitions. Word has length 427 [2020-10-13 08:13:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:56,785 INFO L479 AbstractCegarLoop]: Abstraction has 13034 states and 15531 transitions. [2020-10-13 08:13:56,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:56,785 INFO L276 IsEmpty]: Start isEmpty. Operand 13034 states and 15531 transitions. [2020-10-13 08:13:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-13 08:13:56,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:56,798 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:56,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:13:56,798 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash -909604277, now seen corresponding path program 1 times [2020-10-13 08:13:56,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:56,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186358422] [2020-10-13 08:13:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:57,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:57,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:58,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:59,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:59,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-13 08:13:59,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 08:13:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2188 [2020-10-13 08:13:59,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-13 08:13:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:59,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:59,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:59,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:59,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:59,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:59,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:13:59,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:59,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:59,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:59,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:59,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:59,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:59,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:59,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:13:59,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:59,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:59,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:59,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:59,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:59,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:59,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:13:59,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:13:59,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 08:13:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-13 08:13:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:59,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:59,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:59,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:59,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:13:59,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:13:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:59,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-13 08:13:59,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186358422] [2020-10-13 08:13:59,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:59,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:13:59,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979996573] [2020-10-13 08:13:59,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:59,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:59,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:59,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:59,504 INFO L87 Difference]: Start difference. First operand 13034 states and 15531 transitions. Second operand 5 states. [2020-10-13 08:14:00,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:00,927 INFO L93 Difference]: Finished difference Result 23578 states and 28197 transitions. [2020-10-13 08:14:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:14:00,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 442 [2020-10-13 08:14:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:00,949 INFO L225 Difference]: With dead ends: 23578 [2020-10-13 08:14:00,950 INFO L226 Difference]: Without dead ends: 13058 [2020-10-13 08:14:00,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 08:14:00,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13058 states. [2020-10-13 08:14:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13058 to 13024. [2020-10-13 08:14:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13024 states. [2020-10-13 08:14:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13024 states to 13024 states and 15503 transitions. [2020-10-13 08:14:01,184 INFO L78 Accepts]: Start accepts. Automaton has 13024 states and 15503 transitions. Word has length 442 [2020-10-13 08:14:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:01,185 INFO L479 AbstractCegarLoop]: Abstraction has 13024 states and 15503 transitions. [2020-10-13 08:14:01,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:14:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13024 states and 15503 transitions. [2020-10-13 08:14:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-13 08:14:01,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:01,201 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:14:01,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:14:01,202 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:01,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1387750815, now seen corresponding path program 1 times [2020-10-13 08:14:01,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:01,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546631281] [2020-10-13 08:14:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:03,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:03,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-13 08:14:03,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:14:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2245 [2020-10-13 08:14:03,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:14:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-13 08:14:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:14:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:03,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:03,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:03,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:03,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:14:03,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:03,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:03,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:03,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:14:03,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:14:03,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:14:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:03,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:03,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:03,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:14:03,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:14:03,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 08:14:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:03,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-13 08:14:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:14:04,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:14:04,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 08:14:04,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:14:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 08:14:04,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546631281] [2020-10-13 08:14:04,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:04,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:04,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438920379] [2020-10-13 08:14:04,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:04,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:04,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:04,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:04,366 INFO L87 Difference]: Start difference. First operand 13024 states and 15503 transitions. Second operand 7 states. [2020-10-13 08:14:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:08,374 INFO L93 Difference]: Finished difference Result 24324 states and 29024 transitions. [2020-10-13 08:14:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:14:08,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 449 [2020-10-13 08:14:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:08,397 INFO L225 Difference]: With dead ends: 24324 [2020-10-13 08:14:08,397 INFO L226 Difference]: Without dead ends: 12660 [2020-10-13 08:14:08,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:14:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12660 states. [2020-10-13 08:14:08,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12660 to 12630. [2020-10-13 08:14:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12630 states. [2020-10-13 08:14:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12630 states to 12630 states and 14958 transitions. [2020-10-13 08:14:08,555 INFO L78 Accepts]: Start accepts. Automaton has 12630 states and 14958 transitions. Word has length 449 [2020-10-13 08:14:08,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:08,555 INFO L479 AbstractCegarLoop]: Abstraction has 12630 states and 14958 transitions. [2020-10-13 08:14:08,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:08,555 INFO L276 IsEmpty]: Start isEmpty. Operand 12630 states and 14958 transitions. [2020-10-13 08:14:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-13 08:14:08,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:08,564 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 08:14:08,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 08:14:08,565 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:08,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:08,565 INFO L82 PathProgramCache]: Analyzing trace with hash 907417317, now seen corresponding path program 1 times [2020-10-13 08:14:08,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:08,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518497178] [2020-10-13 08:14:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-13 08:14:12,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:14:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3412 [2020-10-13 08:14:12,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:14:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 342 [2020-10-13 08:14:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 08:14:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:12,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:12,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:12,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:12,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:14:12,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:12,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:14:12,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:12,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:12,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:14:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:14:12,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:12,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 08:14:12,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:12,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:12,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:14:12,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-13 08:14:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:12,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:14:12,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 08:14:12,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:14:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:14:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 254 proven. 40 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-13 08:14:12,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518497178] [2020-10-13 08:14:12,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:12,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:14:12,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480822523] [2020-10-13 08:14:12,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:14:12,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:12,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:14:12,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:14:12,802 INFO L87 Difference]: Start difference. First operand 12630 states and 14958 transitions. Second operand 8 states. [2020-10-13 08:14:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:19,201 INFO L93 Difference]: Finished difference Result 28761 states and 34499 transitions. [2020-10-13 08:14:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 08:14:19,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 466 [2020-10-13 08:14:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:19,227 INFO L225 Difference]: With dead ends: 28761 [2020-10-13 08:14:19,227 INFO L226 Difference]: Without dead ends: 16129 [2020-10-13 08:14:19,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-13 08:14:19,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16129 states. [2020-10-13 08:14:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16129 to 15870. [2020-10-13 08:14:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15870 states. [2020-10-13 08:14:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15870 states to 15870 states and 18566 transitions. [2020-10-13 08:14:19,444 INFO L78 Accepts]: Start accepts. Automaton has 15870 states and 18566 transitions. Word has length 466 [2020-10-13 08:14:19,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:19,444 INFO L479 AbstractCegarLoop]: Abstraction has 15870 states and 18566 transitions. [2020-10-13 08:14:19,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:14:19,444 INFO L276 IsEmpty]: Start isEmpty. Operand 15870 states and 18566 transitions. [2020-10-13 08:14:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-13 08:14:19,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:19,453 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:14:19,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 08:14:19,454 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1771514544, now seen corresponding path program 1 times [2020-10-13 08:14:19,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:19,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389935574] [2020-10-13 08:14:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:19,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-13 08:14:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:14:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-13 08:14:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 348 [2020-10-13 08:14:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:14:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:24,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:24,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:24,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:24,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:24,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:24,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:24,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:24,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:14:24,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:24,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:24,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:14:24,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:14:24,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:24,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-13 08:14:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:24,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:24,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:14:24,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:14:24,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:14:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-13 08:14:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:24,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:24,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:14:24,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:14:24,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:14:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 423 proven. 2 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2020-10-13 08:14:25,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389935574] [2020-10-13 08:14:25,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:25,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:25,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456176785] [2020-10-13 08:14:25,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:25,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:25,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:25,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:25,127 INFO L87 Difference]: Start difference. First operand 15870 states and 18566 transitions. Second operand 7 states. [2020-10-13 08:14:28,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:28,884 INFO L93 Difference]: Finished difference Result 31405 states and 36775 transitions. [2020-10-13 08:14:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:14:28,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-13 08:14:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:28,907 INFO L225 Difference]: With dead ends: 31405 [2020-10-13 08:14:28,907 INFO L226 Difference]: Without dead ends: 15919 [2020-10-13 08:14:28,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:14:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15919 states. [2020-10-13 08:14:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15919 to 14936. [2020-10-13 08:14:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14936 states. [2020-10-13 08:14:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 17148 transitions. [2020-10-13 08:14:29,078 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 17148 transitions. Word has length 471 [2020-10-13 08:14:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:29,079 INFO L479 AbstractCegarLoop]: Abstraction has 14936 states and 17148 transitions. [2020-10-13 08:14:29,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 17148 transitions. [2020-10-13 08:14:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-13 08:14:29,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:29,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:14:29,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 08:14:29,092 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:29,093 INFO L82 PathProgramCache]: Analyzing trace with hash -89618821, now seen corresponding path program 1 times [2020-10-13 08:14:29,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:29,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696869729] [2020-10-13 08:14:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:31,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:32,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:34,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:34,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-13 08:14:34,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:14:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 08:14:34,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:14:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 08:14:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:34,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:34,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:34,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:34,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:34,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:14:34,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:34,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:34,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:34,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:14:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:14:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:14:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:34,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:34,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 08:14:34,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:14:34,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 08:14:34,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:14:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:34,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:34,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:14:34,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 08:14:34,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:34,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:34,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:14:34,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:34,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-13 08:14:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:34,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:34,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:14:34,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:14:34,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:14:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 321 proven. 86 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-13 08:14:35,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696869729] [2020-10-13 08:14:35,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:35,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:35,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017729764] [2020-10-13 08:14:35,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:35,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:35,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:35,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:35,032 INFO L87 Difference]: Start difference. First operand 14936 states and 17148 transitions. Second operand 7 states. [2020-10-13 08:14:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:39,383 INFO L93 Difference]: Finished difference Result 32169 states and 37068 transitions. [2020-10-13 08:14:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:14:39,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2020-10-13 08:14:39,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:39,405 INFO L225 Difference]: With dead ends: 32169 [2020-10-13 08:14:39,405 INFO L226 Difference]: Without dead ends: 13937 [2020-10-13 08:14:39,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:14:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13937 states. [2020-10-13 08:14:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13937 to 12008. [2020-10-13 08:14:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12008 states. [2020-10-13 08:14:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12008 states to 12008 states and 13558 transitions. [2020-10-13 08:14:39,581 INFO L78 Accepts]: Start accepts. Automaton has 12008 states and 13558 transitions. Word has length 492 [2020-10-13 08:14:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:39,582 INFO L479 AbstractCegarLoop]: Abstraction has 12008 states and 13558 transitions. [2020-10-13 08:14:39,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 12008 states and 13558 transitions. [2020-10-13 08:14:39,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-13 08:14:39,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:39,602 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:14:39,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 08:14:39,602 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:39,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:39,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1794262891, now seen corresponding path program 1 times [2020-10-13 08:14:39,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:39,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928236901] [2020-10-13 08:14:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:42,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:42,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-13 08:14:42,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:14:42,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2562 [2020-10-13 08:14:42,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-10-13 08:14:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:14:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:42,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:42,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:42,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:42,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:42,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:42,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:42,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:14:42,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:42,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:14:42,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:42,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:14:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:42,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:42,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:14:42,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:42,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:14:42,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:42,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-10-13 08:14:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:42,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:42,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:42,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:14:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:14:42,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:14:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:42,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-13 08:14:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:42,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:42,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:14:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:14:42,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:14:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-13 08:14:42,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928236901] [2020-10-13 08:14:42,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:42,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:42,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95914748] [2020-10-13 08:14:42,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:42,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:42,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:42,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:42,935 INFO L87 Difference]: Start difference. First operand 12008 states and 13558 transitions. Second operand 7 states. [2020-10-13 08:14:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:45,990 INFO L93 Difference]: Finished difference Result 23860 states and 26959 transitions. [2020-10-13 08:14:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:14:45,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 500 [2020-10-13 08:14:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:46,011 INFO L225 Difference]: With dead ends: 23860 [2020-10-13 08:14:46,011 INFO L226 Difference]: Without dead ends: 12236 [2020-10-13 08:14:46,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:14:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2020-10-13 08:14:46,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 11444. [2020-10-13 08:14:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11444 states. [2020-10-13 08:14:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11444 states to 11444 states and 12877 transitions. [2020-10-13 08:14:46,142 INFO L78 Accepts]: Start accepts. Automaton has 11444 states and 12877 transitions. Word has length 500 [2020-10-13 08:14:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:46,143 INFO L479 AbstractCegarLoop]: Abstraction has 11444 states and 12877 transitions. [2020-10-13 08:14:46,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 11444 states and 12877 transitions. [2020-10-13 08:14:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-10-13 08:14:46,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:46,155 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 08:14:46,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 08:14:46,155 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:46,155 INFO L82 PathProgramCache]: Analyzing trace with hash 818004722, now seen corresponding path program 1 times [2020-10-13 08:14:46,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:46,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70871081] [2020-10-13 08:14:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:46,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:46,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:49,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:49,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-13 08:14:49,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:14:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3532 [2020-10-13 08:14:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 403 [2020-10-13 08:14:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:49,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:49,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:49,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:14:49,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:49,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:49,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:49,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:14:49,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:14:49,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:49,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:49,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:14:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:49,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:49,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:49,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:14:49,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 08:14:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:50,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:50,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 08:14:50,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:50,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:14:50,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-13 08:14:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-13 08:14:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:50,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:50,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:14:50,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:14:50,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:14:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:50,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2020-10-13 08:14:50,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70871081] [2020-10-13 08:14:50,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:50,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:14:50,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476398459] [2020-10-13 08:14:50,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:14:50,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:50,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:14:50,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:14:50,317 INFO L87 Difference]: Start difference. First operand 11444 states and 12877 transitions. Second operand 5 states. [2020-10-13 08:14:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:52,707 INFO L93 Difference]: Finished difference Result 23073 states and 26009 transitions. [2020-10-13 08:14:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:14:52,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 527 [2020-10-13 08:14:52,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:52,727 INFO L225 Difference]: With dead ends: 23073 [2020-10-13 08:14:52,728 INFO L226 Difference]: Without dead ends: 12983 [2020-10-13 08:14:52,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:14:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2020-10-13 08:14:52,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12571. [2020-10-13 08:14:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12571 states. [2020-10-13 08:14:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12571 states to 12571 states and 13789 transitions. [2020-10-13 08:14:52,861 INFO L78 Accepts]: Start accepts. Automaton has 12571 states and 13789 transitions. Word has length 527 [2020-10-13 08:14:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:52,861 INFO L479 AbstractCegarLoop]: Abstraction has 12571 states and 13789 transitions. [2020-10-13 08:14:52,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:14:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 12571 states and 13789 transitions. [2020-10-13 08:14:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2020-10-13 08:14:52,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:52,880 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 08:14:52,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 08:14:52,880 INFO L427 AbstractCegarLoop]: === Iteration 34 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1807735809, now seen corresponding path program 1 times [2020-10-13 08:14:52,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:52,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507055084] [2020-10-13 08:14:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:53,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:57,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:57,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 724 [2020-10-13 08:14:57,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:14:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 08:14:57,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 08:14:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:14:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:58,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:58,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:58,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:58,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:14:58,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:58,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:14:58,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:58,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:58,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:14:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:58,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:14:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 08:14:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:58,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 08:14:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:58,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:14:58,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:14:58,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:14:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-13 08:14:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:58,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 08:14:58,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:14:58,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-13 08:14:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:58,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-10-13 08:14:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:58,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:14:58,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:58,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 08:14:58,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 08:14:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:58,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 390 proven. 196 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2020-10-13 08:14:58,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507055084] [2020-10-13 08:14:58,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:58,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:58,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643962096] [2020-10-13 08:14:58,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:58,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:58,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:58,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:58,886 INFO L87 Difference]: Start difference. First operand 12571 states and 13789 transitions. Second operand 7 states. [2020-10-13 08:15:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:01,648 INFO L93 Difference]: Finished difference Result 23832 states and 26154 transitions. [2020-10-13 08:15:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:15:01,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 706 [2020-10-13 08:15:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:01,667 INFO L225 Difference]: With dead ends: 23832 [2020-10-13 08:15:01,668 INFO L226 Difference]: Without dead ends: 12805 [2020-10-13 08:15:01,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:15:01,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2020-10-13 08:15:01,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 12571. [2020-10-13 08:15:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12571 states. [2020-10-13 08:15:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12571 states to 12571 states and 13762 transitions. [2020-10-13 08:15:01,849 INFO L78 Accepts]: Start accepts. Automaton has 12571 states and 13762 transitions. Word has length 706 [2020-10-13 08:15:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:01,850 INFO L479 AbstractCegarLoop]: Abstraction has 12571 states and 13762 transitions. [2020-10-13 08:15:01,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:15:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 12571 states and 13762 transitions. [2020-10-13 08:15:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2020-10-13 08:15:01,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:01,869 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:15:01,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 08:15:01,870 INFO L427 AbstractCegarLoop]: === Iteration 35 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash 102074907, now seen corresponding path program 1 times [2020-10-13 08:15:01,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:01,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58667022] [2020-10-13 08:15:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:02,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 745 [2020-10-13 08:15:07,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:15:07,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 08:15:07,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:15:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 08:15:07,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:07,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:15:07,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:15:07,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:15:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:15:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:07,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:15:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:15:07,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 08:15:07,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:15:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:15:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-13 08:15:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:15:07,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:15:07,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:15:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:07,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-13 08:15:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 08:15:07,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 08:15:07,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-13 08:15:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:07,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2020-10-13 08:15:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:07,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:15:07,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:15:07,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 08:15:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 313 proven. 363 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2020-10-13 08:15:07,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58667022] [2020-10-13 08:15:07,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:07,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:15:07,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340661327] [2020-10-13 08:15:07,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:15:07,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:07,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:15:07,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:15:07,945 INFO L87 Difference]: Start difference. First operand 12571 states and 13762 transitions. Second operand 7 states. [2020-10-13 08:15:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:10,868 INFO L93 Difference]: Finished difference Result 26415 states and 29156 transitions. [2020-10-13 08:15:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:15:10,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 727 [2020-10-13 08:15:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:10,889 INFO L225 Difference]: With dead ends: 26415 [2020-10-13 08:15:10,890 INFO L226 Difference]: Without dead ends: 14228 [2020-10-13 08:15:10,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:15:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14228 states. [2020-10-13 08:15:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14228 to 13533. [2020-10-13 08:15:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13533 states. [2020-10-13 08:15:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 14703 transitions. [2020-10-13 08:15:11,085 INFO L78 Accepts]: Start accepts. Automaton has 13533 states and 14703 transitions. Word has length 727 [2020-10-13 08:15:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:11,086 INFO L479 AbstractCegarLoop]: Abstraction has 13533 states and 14703 transitions. [2020-10-13 08:15:11,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:15:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13533 states and 14703 transitions. [2020-10-13 08:15:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-13 08:15:11,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:11,109 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 08:15:11,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 08:15:11,109 INFO L427 AbstractCegarLoop]: === Iteration 36 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1395514970, now seen corresponding path program 1 times [2020-10-13 08:15:11,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:11,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809131771] [2020-10-13 08:15:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking...