/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/Problem14_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:45:42,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:45:42,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:45:42,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:45:42,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:45:42,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:45:42,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:45:42,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:45:42,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:45:42,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:45:42,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:45:42,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:45:42,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:45:42,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:45:42,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:45:42,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:45:42,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:45:42,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:45:42,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:45:42,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:45:42,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:45:42,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:45:42,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:45:42,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:45:42,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:45:42,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:45:42,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:45:42,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:45:42,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:45:42,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:45:42,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:45:42,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:45:42,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:45:42,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:45:42,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:45:42,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:45:42,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:45:42,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:45:42,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:45:42,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:45:42,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:45:42,994 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 08:45:43,015 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:45:43,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:45:43,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:45:43,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:45:43,017 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:45:43,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:45:43,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:45:43,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:45:43,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:45:43,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:45:43,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:45:43,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:45:43,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:45:43,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:45:43,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:45:43,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:45:43,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:45:43,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:45:43,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:45:43,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:45:43,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:45:43,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:45:43,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:45:43,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:45:43,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:45:43,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:45:43,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:45:43,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:45:43,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:45:43,022 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 08:45:43,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:45:43,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:45:43,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:45:43,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:45:43,395 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:45:43,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label02.c [2020-10-13 08:45:43,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58c5e5a85/3650651f66da47bc8948952133a5eb16/FLAG428df178b [2020-10-13 08:45:44,107 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:45:44,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label02.c [2020-10-13 08:45:44,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58c5e5a85/3650651f66da47bc8948952133a5eb16/FLAG428df178b [2020-10-13 08:45:44,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58c5e5a85/3650651f66da47bc8948952133a5eb16 [2020-10-13 08:45:44,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:45:44,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:45:44,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:45:44,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:45:44,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:45:44,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:45:44" (1/1) ... [2020-10-13 08:45:44,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:44, skipping insertion in model container [2020-10-13 08:45:44,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:45:44" (1/1) ... [2020-10-13 08:45:44,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:45:44,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:45:45,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:45:45,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:45:45,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:45:45,302 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:45:45,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45 WrapperNode [2020-10-13 08:45:45,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:45:45,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:45:45,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:45:45,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:45:45,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (1/1) ... [2020-10-13 08:45:45,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (1/1) ... [2020-10-13 08:45:45,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (1/1) ... [2020-10-13 08:45:45,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (1/1) ... [2020-10-13 08:45:45,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (1/1) ... [2020-10-13 08:45:45,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (1/1) ... [2020-10-13 08:45:45,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (1/1) ... [2020-10-13 08:45:45,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:45:45,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:45:45,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:45:45,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:45:45,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (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 08:45:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:45:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:45:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:45:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:45:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:45:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:45:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:45:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:45:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:45:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:45:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:45:47,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:45:47,144 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:45:47,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:45:47 BoogieIcfgContainer [2020-10-13 08:45:47,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:45:47,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:45:47,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:45:47,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:45:47,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:45:44" (1/3) ... [2020-10-13 08:45:47,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7494ddcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:45:47, skipping insertion in model container [2020-10-13 08:45:47,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:45:45" (2/3) ... [2020-10-13 08:45:47,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7494ddcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:45:47, skipping insertion in model container [2020-10-13 08:45:47,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:45:47" (3/3) ... [2020-10-13 08:45:47,160 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label02.c [2020-10-13 08:45:47,172 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:45:47,181 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:45:47,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:45:47,226 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:45:47,226 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:45:47,227 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:45:47,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:45:47,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:45:47,227 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:45:47,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:45:47,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:45:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-13 08:45:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 08:45:47,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:47,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:47,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:47,271 INFO L82 PathProgramCache]: Analyzing trace with hash 83886738, now seen corresponding path program 1 times [2020-10-13 08:45:47,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:47,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681391590] [2020-10-13 08:45:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:47,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:47,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 08:45:47,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:47,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-13 08:45:47,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:45:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:45:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:45:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:45:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:47,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:47,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:47,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:45:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:45:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:47,881 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 08:45:47,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681391590] [2020-10-13 08:45:47,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:45:47,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:45:47,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976835278] [2020-10-13 08:45:47,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:45:47,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:47,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:45:47,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:45:47,916 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2020-10-13 08:45:49,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:49,843 INFO L93 Difference]: Finished difference Result 698 states and 1241 transitions. [2020-10-13 08:45:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:49,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 08:45:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:49,880 INFO L225 Difference]: With dead ends: 698 [2020-10-13 08:45:49,880 INFO L226 Difference]: Without dead ends: 380 [2020-10-13 08:45:49,893 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 08:45:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-13 08:45:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 374. [2020-10-13 08:45:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-13 08:45:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 604 transitions. [2020-10-13 08:45:50,038 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 604 transitions. Word has length 15 [2020-10-13 08:45:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:50,038 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 604 transitions. [2020-10-13 08:45:50,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:45:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 604 transitions. [2020-10-13 08:45:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 08:45:50,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:50,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:50,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:45:50,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:50,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:50,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1553025801, now seen corresponding path program 1 times [2020-10-13 08:45:50,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:50,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664608823] [2020-10-13 08:45:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:50,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:50,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:50,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:45:50,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:45:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-13 08:45:50,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:45:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:45:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:45:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:51,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:51,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:51,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:45:51,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:45:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:51,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:51,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:45:51,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:51,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:45:51,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:45:51,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:45:51,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664608823] [2020-10-13 08:45:51,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:45:51,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:45:51,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53856201] [2020-10-13 08:45:51,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:51,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:51,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:51,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:51,216 INFO L87 Difference]: Start difference. First operand 374 states and 604 transitions. Second operand 5 states. [2020-10-13 08:45:53,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:53,215 INFO L93 Difference]: Finished difference Result 1116 states and 1825 transitions. [2020-10-13 08:45:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:53,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-13 08:45:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:53,229 INFO L225 Difference]: With dead ends: 1116 [2020-10-13 08:45:53,229 INFO L226 Difference]: Without dead ends: 748 [2020-10-13 08:45:53,233 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 08:45:53,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-13 08:45:53,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 560. [2020-10-13 08:45:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-13 08:45:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 843 transitions. [2020-10-13 08:45:53,285 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 843 transitions. Word has length 84 [2020-10-13 08:45:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:53,286 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 843 transitions. [2020-10-13 08:45:53,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:45:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 843 transitions. [2020-10-13 08:45:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 08:45:53,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:53,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:53,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:45:53,291 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:53,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1197364770, now seen corresponding path program 1 times [2020-10-13 08:45:53,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:53,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138677364] [2020-10-13 08:45:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:53,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:53,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:45:53,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:45:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-13 08:45:53,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:45:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:45:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:45:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:53,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:53,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:53,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:53,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:45:53,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:53,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:54,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:54,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:45:54,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:45:54,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:45:54,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:45:54,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138677364] [2020-10-13 08:45:54,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:45:54,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:45:54,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835572667] [2020-10-13 08:45:54,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:45:54,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:54,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:45:54,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:45:54,095 INFO L87 Difference]: Start difference. First operand 560 states and 843 transitions. Second operand 6 states. [2020-10-13 08:45:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:55,621 INFO L93 Difference]: Finished difference Result 934 states and 1400 transitions. [2020-10-13 08:45:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:55,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-13 08:45:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:55,629 INFO L225 Difference]: With dead ends: 934 [2020-10-13 08:45:55,630 INFO L226 Difference]: Without dead ends: 932 [2020-10-13 08:45:55,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:45:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-10-13 08:45:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 744. [2020-10-13 08:45:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-13 08:45:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1148 transitions. [2020-10-13 08:45:55,665 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1148 transitions. Word has length 95 [2020-10-13 08:45:55,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:55,666 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 1148 transitions. [2020-10-13 08:45:55,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:45:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1148 transitions. [2020-10-13 08:45:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 08:45:55,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:55,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:55,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:45:55,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:55,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash -40595803, now seen corresponding path program 1 times [2020-10-13 08:45:55,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:55,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692293850] [2020-10-13 08:45:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:55,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:56,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:56,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:45:56,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:45:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-13 08:45:56,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:45:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 08:45:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:45:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:56,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:56,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:56,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:45:56,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:56,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:56,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:56,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:56,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:45:56,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:56,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:45:56,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:45:56,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:45:56,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692293850] [2020-10-13 08:45:56,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:45:56,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:45:56,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239651421] [2020-10-13 08:45:56,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:56,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:56,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:56,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:56,494 INFO L87 Difference]: Start difference. First operand 744 states and 1148 transitions. Second operand 5 states. [2020-10-13 08:45:58,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:58,660 INFO L93 Difference]: Finished difference Result 2226 states and 3508 transitions. [2020-10-13 08:45:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:58,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 08:45:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:58,673 INFO L225 Difference]: With dead ends: 2226 [2020-10-13 08:45:58,673 INFO L226 Difference]: Without dead ends: 1488 [2020-10-13 08:45:58,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 08:45:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2020-10-13 08:45:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1114. [2020-10-13 08:45:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-10-13 08:45:58,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1595 transitions. [2020-10-13 08:45:58,747 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1595 transitions. Word has length 114 [2020-10-13 08:45:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:58,749 INFO L479 AbstractCegarLoop]: Abstraction has 1114 states and 1595 transitions. [2020-10-13 08:45:58,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:45:58,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1595 transitions. [2020-10-13 08:45:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 08:45:58,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:58,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:58,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:45:58,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:58,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:58,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1131136447, now seen corresponding path program 1 times [2020-10-13 08:45:58,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:58,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588682345] [2020-10-13 08:45:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:58,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:45:59,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:45:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-13 08:45:59,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:45:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:45:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:45:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:59,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:59,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:59,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:59,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:45:59,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:59,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:00,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:00,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:46:00,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 08:46:00,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:46:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:00,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588682345] [2020-10-13 08:46:00,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:00,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:46:00,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377558708] [2020-10-13 08:46:00,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:46:00,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:00,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:46:00,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:46:00,145 INFO L87 Difference]: Start difference. First operand 1114 states and 1595 transitions. Second operand 5 states. [2020-10-13 08:46:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:02,366 INFO L93 Difference]: Finished difference Result 2968 states and 4406 transitions. [2020-10-13 08:46:02,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:46:02,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 08:46:02,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:02,381 INFO L225 Difference]: With dead ends: 2968 [2020-10-13 08:46:02,381 INFO L226 Difference]: Without dead ends: 1860 [2020-10-13 08:46:02,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 08:46:02,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2020-10-13 08:46:02,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1486. [2020-10-13 08:46:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-10-13 08:46:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2076 transitions. [2020-10-13 08:46:02,451 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2076 transitions. Word has length 144 [2020-10-13 08:46:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:02,451 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 2076 transitions. [2020-10-13 08:46:02,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:46:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2076 transitions. [2020-10-13 08:46:02,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 08:46:02,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:02,457 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:02,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:46:02,457 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash 690112969, now seen corresponding path program 1 times [2020-10-13 08:46:02,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:02,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453492811] [2020-10-13 08:46:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:02,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:03,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:03,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 08:46:03,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:03,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-13 08:46:03,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:46:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:46:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 08:46:03,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:03,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:03,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:03,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:46:03,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:46:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:03,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:03,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:03,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-13 08:46:03,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:46:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:03,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453492811] [2020-10-13 08:46:03,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:46:03,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:46:03,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258646632] [2020-10-13 08:46:03,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:46:03,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:03,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:46:03,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:46:03,989 INFO L87 Difference]: Start difference. First operand 1486 states and 2076 transitions. Second operand 7 states. [2020-10-13 08:46:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:06,165 INFO L93 Difference]: Finished difference Result 3924 states and 5612 transitions. [2020-10-13 08:46:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:46:06,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-13 08:46:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:06,183 INFO L225 Difference]: With dead ends: 3924 [2020-10-13 08:46:06,183 INFO L226 Difference]: Without dead ends: 2444 [2020-10-13 08:46:06,189 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 08:46:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2020-10-13 08:46:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2052. [2020-10-13 08:46:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2020-10-13 08:46:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2753 transitions. [2020-10-13 08:46:06,271 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2753 transitions. Word has length 180 [2020-10-13 08:46:06,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:06,271 INFO L479 AbstractCegarLoop]: Abstraction has 2052 states and 2753 transitions. [2020-10-13 08:46:06,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:46:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2753 transitions. [2020-10-13 08:46:06,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 08:46:06,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:06,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:06,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:46:06,278 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:06,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1122156622, now seen corresponding path program 1 times [2020-10-13 08:46:06,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:06,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368352185] [2020-10-13 08:46:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:07,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:08,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:08,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 08:46:08,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:46:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-10-13 08:46:08,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:46:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:46:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:08,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:08,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:08,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:46:08,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:08,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:08,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:46:08,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:08,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 08:46:08,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:46:08,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:08,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 08:46:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:08,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:08,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:08,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:08,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-13 08:46:08,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:46:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:46:09,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368352185] [2020-10-13 08:46:09,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:09,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:46:09,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528320427] [2020-10-13 08:46:09,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:46:09,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:09,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:46:09,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:46:09,471 INFO L87 Difference]: Start difference. First operand 2052 states and 2753 transitions. Second operand 6 states. [2020-10-13 08:46:11,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:11,161 INFO L93 Difference]: Finished difference Result 4167 states and 5615 transitions. [2020-10-13 08:46:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:46:11,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2020-10-13 08:46:11,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:11,176 INFO L225 Difference]: With dead ends: 4167 [2020-10-13 08:46:11,176 INFO L226 Difference]: Without dead ends: 2086 [2020-10-13 08:46:11,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 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 08:46:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2020-10-13 08:46:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2052. [2020-10-13 08:46:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2020-10-13 08:46:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2607 transitions. [2020-10-13 08:46:11,258 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2607 transitions. Word has length 249 [2020-10-13 08:46:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:11,259 INFO L479 AbstractCegarLoop]: Abstraction has 2052 states and 2607 transitions. [2020-10-13 08:46:11,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:46:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2607 transitions. [2020-10-13 08:46:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-13 08:46:11,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:11,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:11,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:46:11,266 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:11,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1062266730, now seen corresponding path program 1 times [2020-10-13 08:46:11,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:11,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605746128] [2020-10-13 08:46:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:14,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:14,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 08:46:14,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:46:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3363 [2020-10-13 08:46:14,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:14,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:46:14,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:46:14,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:46:14,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:14,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:46:14,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:14,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:14,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:46:14,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:46:14,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:46:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 08:46:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:15,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:15,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:15,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:15,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-13 08:46:15,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:46:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:46:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:46:16,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605746128] [2020-10-13 08:46:16,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:16,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:46:16,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514230692] [2020-10-13 08:46:16,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:46:16,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:16,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:46:16,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:46:16,640 INFO L87 Difference]: Start difference. First operand 2052 states and 2607 transitions. Second operand 10 states. [2020-10-13 08:46:17,832 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-13 08:46:18,171 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-13 08:46:18,472 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-13 08:46:19,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:19,863 INFO L93 Difference]: Finished difference Result 4336 states and 5529 transitions. [2020-10-13 08:46:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 08:46:19,864 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2020-10-13 08:46:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:19,875 INFO L225 Difference]: With dead ends: 4336 [2020-10-13 08:46:19,875 INFO L226 Difference]: Without dead ends: 2152 [2020-10-13 08:46:19,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-13 08:46:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-10-13 08:46:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2050. [2020-10-13 08:46:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-10-13 08:46:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2386 transitions. [2020-10-13 08:46:19,946 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2386 transitions. Word has length 253 [2020-10-13 08:46:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:19,946 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 2386 transitions. [2020-10-13 08:46:19,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:46:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2386 transitions. [2020-10-13 08:46:19,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-13 08:46:19,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:19,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:46:19,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:46:19,956 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:19,957 INFO L82 PathProgramCache]: Analyzing trace with hash 947234806, now seen corresponding path program 1 times [2020-10-13 08:46:19,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:19,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371119189] [2020-10-13 08:46:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:20,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:20,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:22,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:22,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:22,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-13 08:46:22,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:46:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2895 [2020-10-13 08:46:22,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:22,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:22,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 08:46:22,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 08:46:22,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:23,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:23,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:46:23,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:23,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:23,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:23,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:46:23,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:23,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:46:23,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:23,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:23,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:23,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-13 08:46:23,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-13 08:46:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:23,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:23,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:23,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:23,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 08:46:23,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:46:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:46:24,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371119189] [2020-10-13 08:46:24,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:24,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:46:24,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668220614] [2020-10-13 08:46:24,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:46:24,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:24,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:46:24,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:46:24,116 INFO L87 Difference]: Start difference. First operand 2050 states and 2386 transitions. Second operand 8 states. [2020-10-13 08:46:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:26,658 INFO L93 Difference]: Finished difference Result 5206 states and 6192 transitions. [2020-10-13 08:46:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:46:26,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 359 [2020-10-13 08:46:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:26,676 INFO L225 Difference]: With dead ends: 5206 [2020-10-13 08:46:26,677 INFO L226 Difference]: Without dead ends: 3162 [2020-10-13 08:46:26,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:46:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2020-10-13 08:46:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 2974. [2020-10-13 08:46:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2974 states. [2020-10-13 08:46:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 3485 transitions. [2020-10-13 08:46:26,766 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 3485 transitions. Word has length 359 [2020-10-13 08:46:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:26,767 INFO L479 AbstractCegarLoop]: Abstraction has 2974 states and 3485 transitions. [2020-10-13 08:46:26,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:46:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 3485 transitions. [2020-10-13 08:46:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-13 08:46:26,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:26,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 08:46:26,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:46:26,783 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:26,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:26,783 INFO L82 PathProgramCache]: Analyzing trace with hash -501148550, now seen corresponding path program 1 times [2020-10-13 08:46:26,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:26,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106003175] [2020-10-13 08:46:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:31,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:31,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-13 08:46:31,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:46:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 08:46:31,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:46:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 277 [2020-10-13 08:46:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 08:46:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:32,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:32,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:32,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:32,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:46:32,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:32,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:32,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:32,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:32,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:46:32,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:32,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:46:32,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:32,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:32,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-13 08:46:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:32,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:32,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:46:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:46:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:46:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:32,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-10-13 08:46:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:32,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:32,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:32,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-13 08:46:32,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:32,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:32,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:46:32,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 08:46:33,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106003175] [2020-10-13 08:46:33,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:33,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:46:33,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12855848] [2020-10-13 08:46:33,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:46:33,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:33,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:46:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:46:33,183 INFO L87 Difference]: Start difference. First operand 2974 states and 3485 transitions. Second operand 7 states. [2020-10-13 08:46:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:35,053 INFO L93 Difference]: Finished difference Result 6334 states and 7473 transitions. [2020-10-13 08:46:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:46:35,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-13 08:46:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:35,068 INFO L225 Difference]: With dead ends: 6334 [2020-10-13 08:46:35,068 INFO L226 Difference]: Without dead ends: 2998 [2020-10-13 08:46:35,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:46:35,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-10-13 08:46:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2978. [2020-10-13 08:46:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-10-13 08:46:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 3485 transitions. [2020-10-13 08:46:35,155 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 3485 transitions. Word has length 445 [2020-10-13 08:46:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:35,156 INFO L479 AbstractCegarLoop]: Abstraction has 2978 states and 3485 transitions. [2020-10-13 08:46:35,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:46:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 3485 transitions. [2020-10-13 08:46:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-13 08:46:35,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:35,171 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 08:46:35,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:46:35,171 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:35,172 INFO L82 PathProgramCache]: Analyzing trace with hash -155533239, now seen corresponding path program 1 times [2020-10-13 08:46:35,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:35,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907516743] [2020-10-13 08:46:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:40,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:40,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-13 08:46:40,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:46:40,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 08:46:40,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:40,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:40,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 290 [2020-10-13 08:46:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:46:40,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:40,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:40,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:40,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:40,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:46:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:40,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:40,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:40,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:46:40,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:46:40,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:40,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-13 08:46:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:40,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:40,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:46:40,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:46:40,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:46:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-13 08:46:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:40,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:40,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:40,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 08:46:40,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:46:40,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-13 08:46:41,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907516743] [2020-10-13 08:46:41,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:41,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:46:41,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34648758] [2020-10-13 08:46:41,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:46:41,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:41,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:46:41,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:46:41,586 INFO L87 Difference]: Start difference. First operand 2978 states and 3485 transitions. Second operand 7 states. [2020-10-13 08:46:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:43,178 INFO L93 Difference]: Finished difference Result 6003 states and 7073 transitions. [2020-10-13 08:46:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:46:43,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 458 [2020-10-13 08:46:43,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:43,194 INFO L225 Difference]: With dead ends: 6003 [2020-10-13 08:46:43,194 INFO L226 Difference]: Without dead ends: 3008 [2020-10-13 08:46:43,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:46:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-10-13 08:46:43,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2984. [2020-10-13 08:46:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2984 states. [2020-10-13 08:46:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 3487 transitions. [2020-10-13 08:46:43,280 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 3487 transitions. Word has length 458 [2020-10-13 08:46:43,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:43,281 INFO L479 AbstractCegarLoop]: Abstraction has 2984 states and 3487 transitions. [2020-10-13 08:46:43,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:46:43,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 3487 transitions. [2020-10-13 08:46:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-13 08:46:43,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:43,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 08:46:43,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:46:43,298 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:43,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:43,299 INFO L82 PathProgramCache]: Analyzing trace with hash 908778678, now seen corresponding path program 1 times [2020-10-13 08:46:43,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:43,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045144479] [2020-10-13 08:46:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:43,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:48,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:48,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-13 08:46:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:46:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 08:46:48,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-13 08:46:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:46:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:48,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:48,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:48,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:46:48,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:48,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:48,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:46:48,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:48,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:46:48,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:48,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-13 08:46:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:48,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:48,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:46:48,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:46:48,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:46:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:48,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-13 08:46:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:48,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:49,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:49,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-13 08:46:49,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:46:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-13 08:46:49,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045144479] [2020-10-13 08:46:49,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:49,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:46:49,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054856049] [2020-10-13 08:46:49,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:46:49,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:49,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:46:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:46:49,801 INFO L87 Difference]: Start difference. First operand 2984 states and 3487 transitions. Second operand 6 states. [2020-10-13 08:46:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:51,217 INFO L93 Difference]: Finished difference Result 6015 states and 7061 transitions. [2020-10-13 08:46:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:46:51,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 463 [2020-10-13 08:46:51,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:51,235 INFO L225 Difference]: With dead ends: 6015 [2020-10-13 08:46:51,236 INFO L226 Difference]: Without dead ends: 3011 [2020-10-13 08:46:51,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 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 08:46:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-10-13 08:46:51,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2984. [2020-10-13 08:46:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2984 states. [2020-10-13 08:46:51,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 3477 transitions. [2020-10-13 08:46:51,325 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 3477 transitions. Word has length 463 [2020-10-13 08:46:51,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:51,326 INFO L479 AbstractCegarLoop]: Abstraction has 2984 states and 3477 transitions. [2020-10-13 08:46:51,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:46:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 3477 transitions. [2020-10-13 08:46:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-13 08:46:51,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:51,337 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:51,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:46:51,337 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:51,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1243928006, now seen corresponding path program 1 times [2020-10-13 08:46:51,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:51,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937662613] [2020-10-13 08:46:51,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:51,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:52,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:53,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:56,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:56,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-13 08:46:56,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:46:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 08:46:56,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:56,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:46:56,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-13 08:46:56,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 08:46:56,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:56,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:56,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:56,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:46:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:56,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:56,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:56,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:46:56,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:46:56,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-13 08:46:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:56,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:56,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:46:56,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:56,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 08:46:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:46:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-13 08:46:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:57,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:57,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:57,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-13 08:46:57,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:46:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:46:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:46:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:57,755 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-13 08:46:57,990 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-13 08:46:58,304 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-13 08:46:58,529 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-13 08:46:58,772 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-13 08:46:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-13 08:46:59,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937662613] [2020-10-13 08:46:59,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:59,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 08:46:59,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984886747] [2020-10-13 08:46:59,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 08:46:59,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:59,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 08:46:59,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:46:59,940 INFO L87 Difference]: Start difference. First operand 2984 states and 3477 transitions. Second operand 13 states. [2020-10-13 08:47:00,740 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-13 08:47:00,992 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-13 08:47:01,300 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-13 08:47:01,571 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-13 08:47:01,832 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-13 08:47:02,208 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-13 08:47:02,492 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2020-10-13 08:47:03,056 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-13 08:47:03,991 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-13 08:47:04,337 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-13 08:47:04,630 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-13 08:47:04,911 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-13 08:47:05,314 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-13 08:47:05,646 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2020-10-13 08:47:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:05,920 INFO L93 Difference]: Finished difference Result 6156 states and 7207 transitions. [2020-10-13 08:47:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 08:47:05,927 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 477 [2020-10-13 08:47:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:05,951 INFO L225 Difference]: With dead ends: 6156 [2020-10-13 08:47:05,952 INFO L226 Difference]: Without dead ends: 3134 [2020-10-13 08:47:05,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2020-10-13 08:47:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2020-10-13 08:47:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 3128. [2020-10-13 08:47:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3128 states. [2020-10-13 08:47:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 3629 transitions. [2020-10-13 08:47:06,038 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 3629 transitions. Word has length 477 [2020-10-13 08:47:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:06,039 INFO L479 AbstractCegarLoop]: Abstraction has 3128 states and 3629 transitions. [2020-10-13 08:47:06,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 08:47:06,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 3629 transitions. [2020-10-13 08:47:06,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-13 08:47:06,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:06,051 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 08:47:06,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:47:06,051 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:06,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1812966125, now seen corresponding path program 1 times [2020-10-13 08:47:06,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:06,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605999224] [2020-10-13 08:47:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:11,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-13 08:47:11,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:47:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 08:47:11,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 320 [2020-10-13 08:47:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:47:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:11,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:11,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:11,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:11,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:11,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:47:11,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:11,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:11,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:11,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:11,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:47:11,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:47:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-13 08:47:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:11,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:11,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:11,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:47:11,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:47:11,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:47:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:11,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-13 08:47:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:11,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:11,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:47:11,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-13 08:47:11,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:47:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:47:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-13 08:47:12,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605999224] [2020-10-13 08:47:12,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:12,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:47:12,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460848996] [2020-10-13 08:47:12,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:47:12,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:12,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:47:12,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:47:12,638 INFO L87 Difference]: Start difference. First operand 3128 states and 3629 transitions. Second operand 6 states. [2020-10-13 08:47:13,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:13,889 INFO L93 Difference]: Finished difference Result 6277 states and 7316 transitions. [2020-10-13 08:47:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:47:13,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 488 [2020-10-13 08:47:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:13,901 INFO L225 Difference]: With dead ends: 6277 [2020-10-13 08:47:13,902 INFO L226 Difference]: Without dead ends: 3141 [2020-10-13 08:47:13,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 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 08:47:13,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2020-10-13 08:47:13,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 3126. [2020-10-13 08:47:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-10-13 08:47:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 3616 transitions. [2020-10-13 08:47:13,982 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 3616 transitions. Word has length 488 [2020-10-13 08:47:13,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:13,984 INFO L479 AbstractCegarLoop]: Abstraction has 3126 states and 3616 transitions. [2020-10-13 08:47:13,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:47:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 3616 transitions. [2020-10-13 08:47:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2020-10-13 08:47:13,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:13,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:47:13,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:47:13,996 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:13,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:13,996 INFO L82 PathProgramCache]: Analyzing trace with hash -163600099, now seen corresponding path program 1 times [2020-10-13 08:47:13,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:13,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205186779] [2020-10-13 08:47:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:14,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:19,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:19,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-13 08:47:19,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:47:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 08:47:19,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 360 [2020-10-13 08:47:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:47:19,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:19,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:47:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:47:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:19,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:47:19,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:47:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:47:19,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-13 08:47:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:19,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:19,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 08:47:19,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:19,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 08:47:19,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-13 08:47:19,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-13 08:47:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:47:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-13 08:47:20,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:47:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:47:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-13 08:47:20,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205186779] [2020-10-13 08:47:20,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:20,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:47:20,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457325464] [2020-10-13 08:47:20,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:47:20,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:20,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:47:20,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:47:20,787 INFO L87 Difference]: Start difference. First operand 3126 states and 3616 transitions. Second operand 6 states. [2020-10-13 08:47:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:22,038 INFO L93 Difference]: Finished difference Result 6289 states and 7302 transitions. [2020-10-13 08:47:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:47:22,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 528 [2020-10-13 08:47:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:22,048 INFO L225 Difference]: With dead ends: 6289 [2020-10-13 08:47:22,048 INFO L226 Difference]: Without dead ends: 3147 [2020-10-13 08:47:22,057 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 08:47:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2020-10-13 08:47:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 3124. [2020-10-13 08:47:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3124 states. [2020-10-13 08:47:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 3591 transitions. [2020-10-13 08:47:22,127 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 3591 transitions. Word has length 528 [2020-10-13 08:47:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:22,128 INFO L479 AbstractCegarLoop]: Abstraction has 3124 states and 3591 transitions. [2020-10-13 08:47:22,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:47:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 3591 transitions. [2020-10-13 08:47:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-13 08:47:22,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:22,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:47:22,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:47:22,141 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:22,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1367535522, now seen corresponding path program 1 times [2020-10-13 08:47:22,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:22,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837001951] [2020-10-13 08:47:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:22,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:24,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:24,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 08:47:24,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:24,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-10-13 08:47:24,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 08:47:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:47:24,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:47:24,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:24,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:24,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:24,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:24,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:24,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:47:24,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:47:24,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:24,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:25,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:47:25,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-13 08:47:25,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:47:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:47:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:25,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-13 08:47:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:25,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:25,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:25,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:47:25,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:47:25,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:47:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:25,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-13 08:47:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:25,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:25,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:25,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:47:25,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:25,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 08:47:25,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:47:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 24 proven. 334 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-13 08:47:25,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837001951] [2020-10-13 08:47:25,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:25,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:47:25,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863413052] [2020-10-13 08:47:25,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:47:25,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:25,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:47:25,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:47:25,553 INFO L87 Difference]: Start difference. First operand 3124 states and 3591 transitions. Second operand 8 states. [2020-10-13 08:47:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:27,361 INFO L93 Difference]: Finished difference Result 6431 states and 7395 transitions. [2020-10-13 08:47:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:47:27,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 539 [2020-10-13 08:47:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:27,377 INFO L225 Difference]: With dead ends: 6431 [2020-10-13 08:47:27,377 INFO L226 Difference]: Without dead ends: 3313 [2020-10-13 08:47:27,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:47:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2020-10-13 08:47:27,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3308. [2020-10-13 08:47:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3308 states. [2020-10-13 08:47:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 3782 transitions. [2020-10-13 08:47:27,458 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 3782 transitions. Word has length 539 [2020-10-13 08:47:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:27,458 INFO L479 AbstractCegarLoop]: Abstraction has 3308 states and 3782 transitions. [2020-10-13 08:47:27,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:47:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 3782 transitions. [2020-10-13 08:47:27,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2020-10-13 08:47:27,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:27,475 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:47:27,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:47:27,475 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:27,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:27,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1061374791, now seen corresponding path program 1 times [2020-10-13 08:47:27,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:27,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250962602] [2020-10-13 08:47:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:30,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:30,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 776 [2020-10-13 08:47:30,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-13 08:47:30,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:47:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-13 08:47:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 08:47:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:30,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:30,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:30,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:30,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:30,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:47:30,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:30,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:30,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:30,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:30,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:30,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:47:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:47:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:30,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:47:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:30,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:30,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:47:30,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:30,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:47:30,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:30,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:30,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:30,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:47:30,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:30,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:47:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:30,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:30,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:30,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:47:30,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-13 08:47:30,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:47:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:47:30,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-13 08:47:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:31,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:31,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:47:31,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 08:47:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:47:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2020-10-13 08:47:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:31,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:31,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:47:31,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:47:31,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:47:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 274 proven. 340 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2020-10-13 08:47:31,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250962602] [2020-10-13 08:47:31,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:31,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 08:47:31,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765898681] [2020-10-13 08:47:31,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 08:47:31,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:31,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 08:47:31,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:47:31,659 INFO L87 Difference]: Start difference. First operand 3308 states and 3782 transitions. Second operand 9 states. [2020-10-13 08:47:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:33,940 INFO L93 Difference]: Finished difference Result 6616 states and 7586 transitions. [2020-10-13 08:47:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:47:33,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 758 [2020-10-13 08:47:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:33,959 INFO L225 Difference]: With dead ends: 6616 [2020-10-13 08:47:33,959 INFO L226 Difference]: Without dead ends: 3496 [2020-10-13 08:47:33,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:47:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2020-10-13 08:47:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3490. [2020-10-13 08:47:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3490 states. [2020-10-13 08:47:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 3966 transitions. [2020-10-13 08:47:34,047 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 3966 transitions. Word has length 758 [2020-10-13 08:47:34,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:34,048 INFO L479 AbstractCegarLoop]: Abstraction has 3490 states and 3966 transitions. [2020-10-13 08:47:34,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 08:47:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 3966 transitions. [2020-10-13 08:47:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-13 08:47:34,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:34,065 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:47:34,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:47:34,066 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:34,067 INFO L82 PathProgramCache]: Analyzing trace with hash -440248191, now seen corresponding path program 1 times [2020-10-13 08:47:34,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:34,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559532051] [2020-10-13 08:47:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:36,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 844 [2020-10-13 08:47:39,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:47:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 08:47:39,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:47:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 08:47:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:47:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:39,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:47:39,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:47:39,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:47:39,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:47:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:47:39,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:47:39,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 08:47:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-13 08:47:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:40,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:47:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-13 08:47:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:47:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:47:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-13 08:47:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:40,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:40,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:47:40,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:47:40,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:47:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-10-13 08:47:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:40,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:40,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:40,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:47:40,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:40,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:47:40,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:40,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:47:40,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:40,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1508 backedges. 342 proven. 340 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2020-10-13 08:47:40,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559532051] [2020-10-13 08:47:40,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:40,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:47:40,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880137520] [2020-10-13 08:47:40,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:47:40,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:47:40,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:47:40,661 INFO L87 Difference]: Start difference. First operand 3490 states and 3966 transitions. Second operand 8 states. [2020-10-13 08:47:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:42,649 INFO L93 Difference]: Finished difference Result 6982 states and 7954 transitions. [2020-10-13 08:47:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:47:42,651 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 826 [2020-10-13 08:47:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:42,662 INFO L225 Difference]: With dead ends: 6982 [2020-10-13 08:47:42,662 INFO L226 Difference]: Without dead ends: 3680 [2020-10-13 08:47:42,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:47:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2020-10-13 08:47:42,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3674. [2020-10-13 08:47:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3674 states. [2020-10-13 08:47:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 4157 transitions. [2020-10-13 08:47:42,733 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 4157 transitions. Word has length 826 [2020-10-13 08:47:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:42,734 INFO L479 AbstractCegarLoop]: Abstraction has 3674 states and 4157 transitions. [2020-10-13 08:47:42,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:47:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 4157 transitions. [2020-10-13 08:47:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2020-10-13 08:47:42,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:42,750 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2020-10-13 08:47:42,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:47:42,751 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:42,751 INFO L82 PathProgramCache]: Analyzing trace with hash -688503750, now seen corresponding path program 1 times [2020-10-13 08:47:42,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:42,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919005629] [2020-10-13 08:47:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:47,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:47,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-13 08:47:47,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:47:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4732 [2020-10-13 08:47:47,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:47:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-13 08:47:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 08:47:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:47,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:47,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:47,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:47,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:47:47,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:47,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:47,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:47:47,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:47:47,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:47,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:47,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:47,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:47:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:47,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:47,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:47:47,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:47,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:47:47,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:47,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:47:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:48,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:48,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:47:48,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:47:48,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:47:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:47:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:48,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:48,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:47:48,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-13 08:47:48,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:47:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:47:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:47:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:48,769 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-13 08:47:48,953 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-13 08:47:49,147 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-13 08:47:49,344 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-13 08:47:49,566 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-13 08:47:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-13 08:47:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:49,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:49,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:47:49,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:47:49,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:47:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2020-10-13 08:47:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:50,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:50,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:47:50,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:47:50,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:47:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1893 backedges. 409 proven. 340 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2020-10-13 08:47:52,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919005629] [2020-10-13 08:47:52,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:52,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 08:47:52,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795012536] [2020-10-13 08:47:52,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 08:47:52,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:52,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 08:47:52,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:47:52,075 INFO L87 Difference]: Start difference. First operand 3674 states and 4157 transitions. Second operand 13 states. [2020-10-13 08:47:52,863 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-13 08:47:53,464 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-13 08:47:53,774 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-10-13 08:47:53,979 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-10-13 08:47:54,227 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-13 08:47:54,492 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2020-10-13 08:47:54,832 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-13 08:47:55,726 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-13 08:47:56,328 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-13 08:47:56,667 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-10-13 08:47:56,898 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-13 08:47:57,177 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-13 08:47:57,446 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2020-10-13 08:47:57,790 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-13 08:47:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:58,152 INFO L93 Difference]: Finished difference Result 7164 states and 8132 transitions. [2020-10-13 08:47:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 08:47:58,154 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 875 [2020-10-13 08:47:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:58,163 INFO L225 Difference]: With dead ends: 7164 [2020-10-13 08:47:58,164 INFO L226 Difference]: Without dead ends: 3653 [2020-10-13 08:47:58,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-13 08:47:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2020-10-13 08:47:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2020-10-13 08:47:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3653 states. [2020-10-13 08:47:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 4121 transitions. [2020-10-13 08:47:58,240 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 4121 transitions. Word has length 875 [2020-10-13 08:47:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:58,241 INFO L479 AbstractCegarLoop]: Abstraction has 3653 states and 4121 transitions. [2020-10-13 08:47:58,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 08:47:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 4121 transitions. [2020-10-13 08:47:58,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2020-10-13 08:47:58,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:58,261 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:47:58,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:47:58,262 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:58,263 INFO L82 PathProgramCache]: Analyzing trace with hash 558624713, now seen corresponding path program 1 times [2020-10-13 08:47:58,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:58,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901823317] [2020-10-13 08:47:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:58,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:03,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:03,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 922 [2020-10-13 08:48:03,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:48:03,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 08:48:03,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:48:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 08:48:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-13 08:48:03,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:03,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:03,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:03,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:03,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:48:03,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:03,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:03,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:03,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:48:03,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:03,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:48:03,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 08:48:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:48:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:04,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:04,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:48:04,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-13 08:48:04,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 08:48:04,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-13 08:48:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:04,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:04,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:48:04,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:48:04,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 08:48:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:04,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-13 08:48:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:04,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:04,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:48:04,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:04,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:48:04,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:04,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:48:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:04,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-10-13 08:48:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:48:04,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:48:04,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:48:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:04,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-10-13 08:48:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:04,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:04,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:48:04,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:48:04,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:48:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 171 proven. 585 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2020-10-13 08:48:05,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901823317] [2020-10-13 08:48:05,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:05,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:48:05,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024076422] [2020-10-13 08:48:05,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:48:05,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:05,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:48:05,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:48:05,265 INFO L87 Difference]: Start difference. First operand 3653 states and 4121 transitions. Second operand 8 states. [2020-10-13 08:48:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:48:07,456 INFO L93 Difference]: Finished difference Result 7308 states and 8255 transitions. [2020-10-13 08:48:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:48:07,458 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 902 [2020-10-13 08:48:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:48:07,467 INFO L225 Difference]: With dead ends: 7308 [2020-10-13 08:48:07,467 INFO L226 Difference]: Without dead ends: 3843 [2020-10-13 08:48:07,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-13 08:48:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2020-10-13 08:48:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3835. [2020-10-13 08:48:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3835 states. [2020-10-13 08:48:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 4305 transitions. [2020-10-13 08:48:07,537 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 4305 transitions. Word has length 902 [2020-10-13 08:48:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:48:07,538 INFO L479 AbstractCegarLoop]: Abstraction has 3835 states and 4305 transitions. [2020-10-13 08:48:07,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:48:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 4305 transitions. [2020-10-13 08:48:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-13 08:48:07,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:48:07,558 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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, 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] [2020-10-13 08:48:07,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:48:07,558 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:48:07,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:48:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1497623603, now seen corresponding path program 1 times [2020-10-13 08:48:07,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:48:07,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915173440] [2020-10-13 08:48:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:48:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:11,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:11,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-13 08:48:11,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3798 [2020-10-13 08:48:11,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:48:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-13 08:48:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:48:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:11,739 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2020-10-13 08:48:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:11,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:11,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:11,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:11,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:48:11,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:11,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:11,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:11,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:11,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:48:11,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:48:11,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:48:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:11,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:11,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:48:11,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:11,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:48:11,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:11,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:11,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:48:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:11,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:48:11,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:48:11,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:48:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:11,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:11,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:11,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:48:11,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 08:48:11,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:48:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-13 08:48:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:12,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:12,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:48:12,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:12,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-13 08:48:12,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:12,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:48:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:48:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:12,835 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-10-13 08:48:13,122 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-13 08:48:13,570 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-10-13 08:48:14,054 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2020-10-13 08:48:14,406 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-10-13 08:48:14,741 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2020-10-13 08:48:15,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-13 08:48:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:15,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:48:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:48:15,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:48:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 862 [2020-10-13 08:48:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:15,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:15,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:48:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:48:15,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:48:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2714 backedges. 586 proven. 340 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2020-10-13 08:48:19,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915173440] [2020-10-13 08:48:19,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:19,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 08:48:19,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232802408] [2020-10-13 08:48:19,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 08:48:19,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:19,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 08:48:19,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:48:19,327 INFO L87 Difference]: Start difference. First operand 3835 states and 4305 transitions. Second operand 13 states. [2020-10-13 08:48:20,302 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2020-10-13 08:48:21,053 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2020-10-13 08:48:21,602 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 75 [2020-10-13 08:48:22,034 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2020-10-13 08:48:22,430 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2020-10-13 08:48:22,951 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2020-10-13 08:48:23,464 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 91 [2020-10-13 08:48:23,980 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 60 [2020-10-13 08:48:24,261 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-13 08:48:25,139 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 57 [2020-10-13 08:48:25,999 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 62 [2020-10-13 08:48:26,405 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 65 [2020-10-13 08:48:26,770 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 61 [2020-10-13 08:48:27,241 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 61 [2020-10-13 08:48:27,692 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 64 [2020-10-13 08:48:28,486 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 89 [2020-10-13 08:48:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:48:28,661 INFO L93 Difference]: Finished difference Result 7666 states and 8618 transitions. [2020-10-13 08:48:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 08:48:28,661 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1034 [2020-10-13 08:48:28,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:48:28,671 INFO L225 Difference]: With dead ends: 7666 [2020-10-13 08:48:28,671 INFO L226 Difference]: Without dead ends: 4008 [2020-10-13 08:48:28,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-13 08:48:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2020-10-13 08:48:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 4008. [2020-10-13 08:48:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2020-10-13 08:48:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 4481 transitions. [2020-10-13 08:48:28,749 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 4481 transitions. Word has length 1034 [2020-10-13 08:48:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:48:28,750 INFO L479 AbstractCegarLoop]: Abstraction has 4008 states and 4481 transitions. [2020-10-13 08:48:28,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 08:48:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 4481 transitions. [2020-10-13 08:48:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2020-10-13 08:48:28,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:48:28,771 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:48:28,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:48:28,771 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:48:28,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:48:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash 315396514, now seen corresponding path program 1 times [2020-10-13 08:48:28,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:48:28,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222142415] [2020-10-13 08:48:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:48:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:32,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1235 [2020-10-13 08:48:34,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:48:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 08:48:34,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 08:48:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-13 08:48:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-13 08:48:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:34,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:48:34,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:48:34,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:48:34,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:48:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:48:34,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:48:34,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:48:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:48:34,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:48:34,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:48:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:48:34,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:48:34,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:48:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:48:34,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:48:34,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:34,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:34,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:48:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:48:34,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:48:34,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:48:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:48:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:34,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:48:34,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 08:48:34,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:48:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:48:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:34,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:48:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:35,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:35,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:48:35,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-13 08:48:35,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 08:48:35,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1037 [2020-10-13 08:48:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:35,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:35,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:48:35,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:35,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:48:35,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:48:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3947 backedges. 1443 proven. 328 refuted. 0 times theorem prover too weak. 2176 trivial. 0 not checked. [2020-10-13 08:48:36,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222142415] [2020-10-13 08:48:36,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:36,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:48:36,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67934918] [2020-10-13 08:48:36,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:48:36,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:36,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:48:36,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:48:36,156 INFO L87 Difference]: Start difference. First operand 4008 states and 4481 transitions. Second operand 10 states. [2020-10-13 08:48:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:48:39,354 INFO L93 Difference]: Finished difference Result 9124 states and 10309 transitions. [2020-10-13 08:48:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 08:48:39,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1209 [2020-10-13 08:48:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:48:39,367 INFO L225 Difference]: With dead ends: 9124 [2020-10-13 08:48:39,367 INFO L226 Difference]: Without dead ends: 5304 [2020-10-13 08:48:39,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-13 08:48:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2020-10-13 08:48:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 5298. [2020-10-13 08:48:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5298 states. [2020-10-13 08:48:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 5982 transitions. [2020-10-13 08:48:39,473 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 5982 transitions. Word has length 1209 [2020-10-13 08:48:39,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:48:39,475 INFO L479 AbstractCegarLoop]: Abstraction has 5298 states and 5982 transitions. [2020-10-13 08:48:39,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:48:39,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 5982 transitions. [2020-10-13 08:48:39,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1468 [2020-10-13 08:48:39,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:48:39,519 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:48:39,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:48:39,519 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:48:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:48:39,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1667992546, now seen corresponding path program 1 times [2020-10-13 08:48:39,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:48:39,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755818168] [2020-10-13 08:48:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:48:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1497 [2020-10-13 08:48:43,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3264 [2020-10-13 08:48:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-13 08:48:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-13 08:48:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:48:43,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:48:43,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:48:43,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:48:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:48:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:48:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:48:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:48:43,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:48:43,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:48:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:48:43,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:48:43,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:48:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:48:43,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:48:43,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:48:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:48:43,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:48:43,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:48:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:48:43,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:48:43,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:48:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:48:43,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:48:43,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:48:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:48:43,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 08:48:43,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:43,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 08:48:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:48:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:48:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 08:48:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 08:48:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:43,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1295 [2020-10-13 08:48:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:43,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:43,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:43,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:48:43,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:48:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:48:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6099 backedges. 1244 proven. 164 refuted. 0 times theorem prover too weak. 4691 trivial. 0 not checked. [2020-10-13 08:48:44,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755818168] [2020-10-13 08:48:44,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:44,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:48:44,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241827220] [2020-10-13 08:48:44,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:48:44,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:44,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:48:44,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:48:44,839 INFO L87 Difference]: Start difference. First operand 5298 states and 5982 transitions. Second operand 7 states. [2020-10-13 08:48:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:48:46,384 INFO L93 Difference]: Finished difference Result 11125 states and 12615 transitions. [2020-10-13 08:48:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:48:46,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1467 [2020-10-13 08:48:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:48:46,400 INFO L225 Difference]: With dead ends: 11125 [2020-10-13 08:48:46,400 INFO L226 Difference]: Without dead ends: 6015 [2020-10-13 08:48:46,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:48:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6015 states. [2020-10-13 08:48:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6015 to 5933. [2020-10-13 08:48:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5933 states. [2020-10-13 08:48:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5933 states to 5933 states and 6588 transitions. [2020-10-13 08:48:46,516 INFO L78 Accepts]: Start accepts. Automaton has 5933 states and 6588 transitions. Word has length 1467 [2020-10-13 08:48:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:48:46,518 INFO L479 AbstractCegarLoop]: Abstraction has 5933 states and 6588 transitions. [2020-10-13 08:48:46,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:48:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5933 states and 6588 transitions. [2020-10-13 08:48:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1470 [2020-10-13 08:48:46,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:48:46,542 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:48:46,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:48:46,542 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:48:46,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:48:46,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1371851130, now seen corresponding path program 1 times [2020-10-13 08:48:46,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:48:46,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913553172] [2020-10-13 08:48:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:48:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1499 [2020-10-13 08:48:50,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3418 [2020-10-13 08:48:50,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1317 [2020-10-13 08:48:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 08:48:50,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:50,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:48:50,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:48:50,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:48:50,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:48:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:48:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:48:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:48:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:48:50,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:48:50,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:48:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:48:50,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:48:50,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:48:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:48:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:48:50,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:48:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:48:50,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:48:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:48:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:48:50,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:48:50,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:48:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:48:50,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:48:50,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:48:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:48:50,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:48:50,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:48:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:50,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:50,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:48:50,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:50,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:48:50,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:50,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-13 08:48:50,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-13 08:48:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:51,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:51,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:48:51,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 08:48:51,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:48:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6099 backedges. 1349 proven. 2 refuted. 0 times theorem prover too weak. 4748 trivial. 0 not checked. [2020-10-13 08:48:52,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913553172] [2020-10-13 08:48:52,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:52,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:48:52,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014353698] [2020-10-13 08:48:52,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:48:52,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:52,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:48:52,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:48:52,266 INFO L87 Difference]: Start difference. First operand 5933 states and 6588 transitions. Second operand 7 states. [2020-10-13 08:48:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:48:53,992 INFO L93 Difference]: Finished difference Result 11678 states and 12988 transitions. [2020-10-13 08:48:53,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:48:53,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1469 [2020-10-13 08:48:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:48:54,005 INFO L225 Difference]: With dead ends: 11678 [2020-10-13 08:48:54,006 INFO L226 Difference]: Without dead ends: 5933 [2020-10-13 08:48:54,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 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 08:48:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2020-10-13 08:48:54,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 5751. [2020-10-13 08:48:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5751 states. [2020-10-13 08:48:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 6359 transitions. [2020-10-13 08:48:54,103 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 6359 transitions. Word has length 1469 [2020-10-13 08:48:54,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:48:54,104 INFO L479 AbstractCegarLoop]: Abstraction has 5751 states and 6359 transitions. [2020-10-13 08:48:54,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:48:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 6359 transitions. [2020-10-13 08:48:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1623 [2020-10-13 08:48:54,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:48:54,125 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:48:54,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:48:54,125 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:48:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:48:54,126 INFO L82 PathProgramCache]: Analyzing trace with hash 32222009, now seen corresponding path program 1 times [2020-10-13 08:48:54,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:48:54,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580537520] [2020-10-13 08:48:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:48:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:55,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:57,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:57,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1654 [2020-10-13 08:48:57,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3234 [2020-10-13 08:48:57,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1472 [2020-10-13 08:48:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:48:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:57,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:57,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:57,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:57,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:57,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:57,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:48:57,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:57,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:57,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:57,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:48:57,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:48:57,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:48:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:57,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:48:57,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:48:57,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:57,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:57,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:57,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:48:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:57,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:57,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:57,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:48:57,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:57,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:48:57,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:57,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:57,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:48:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:57,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:48:58,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:58,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:48:58,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:58,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:48:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:48:58,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:48:58,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:58,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:48:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:48:58,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:58,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:48:58,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:48:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:48:58,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:58,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:48:58,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:58,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:58,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:48:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:48:58,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:48:58,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:48:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:48:58,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:48:58,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:58,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:48:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:58,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:48:58,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:58,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:48:58,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:58,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:58,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:58,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-13 08:48:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:48:58,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:58,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:48:58,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-13 08:48:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1450 [2020-10-13 08:48:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:58,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:48:58,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-13 08:48:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:48:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:48:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7470 backedges. 1512 proven. 2 refuted. 0 times theorem prover too weak. 5956 trivial. 0 not checked. [2020-10-13 08:48:59,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580537520] [2020-10-13 08:48:59,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:59,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:48:59,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794526241] [2020-10-13 08:48:59,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:48:59,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:59,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:48:59,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:48:59,886 INFO L87 Difference]: Start difference. First operand 5751 states and 6359 transitions. Second operand 7 states. [2020-10-13 08:49:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:49:01,769 INFO L93 Difference]: Finished difference Result 11524 states and 12768 transitions. [2020-10-13 08:49:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:49:01,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1622 [2020-10-13 08:49:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:49:01,778 INFO L225 Difference]: With dead ends: 11524 [2020-10-13 08:49:01,778 INFO L226 Difference]: Without dead ends: 5931 [2020-10-13 08:49:01,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:49:01,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5931 states. [2020-10-13 08:49:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5931 to 5749. [2020-10-13 08:49:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5749 states. [2020-10-13 08:49:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5749 states to 5749 states and 6346 transitions. [2020-10-13 08:49:01,866 INFO L78 Accepts]: Start accepts. Automaton has 5749 states and 6346 transitions. Word has length 1622 [2020-10-13 08:49:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:49:01,868 INFO L479 AbstractCegarLoop]: Abstraction has 5749 states and 6346 transitions. [2020-10-13 08:49:01,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:49:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5749 states and 6346 transitions. [2020-10-13 08:49:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1732 [2020-10-13 08:49:01,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:49:01,899 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 8, 8, 8, 8, 8, 8, 7, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:49:01,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:49:01,899 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:49:01,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:49:01,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1168505418, now seen corresponding path program 1 times [2020-10-13 08:49:01,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:49:01,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664288645] [2020-10-13 08:49:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:49:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1765 [2020-10-13 08:49:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:49:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 08:49:07,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:49:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-13 08:49:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:49:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:49:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:49:07,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:49:07,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:49:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:49:07,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:49:07,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:49:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:49:07,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:49:07,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:49:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:49:07,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:49:07,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:49:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:49:07,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:49:07,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:49:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:49:07,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:49:07,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:49:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:49:07,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:49:07,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:49:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:49:07,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:49:07,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:49:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:49:07,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:49:07,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:49:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:49:07,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:49:07,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:49:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:07,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:07,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:49:07,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:49:07,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:07,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-13 08:49:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:08,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:08,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 08:49:08,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:49:08,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:49:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 08:49:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:08,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-13 08:49:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:08,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:08,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:49:08,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:49:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 08:49:08,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:49:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:49:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 08:49:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:08,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1559 [2020-10-13 08:49:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:08,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:08,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:49:08,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:49:08,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:49:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8734 backedges. 1480 proven. 150 refuted. 0 times theorem prover too weak. 7104 trivial. 0 not checked. [2020-10-13 08:49:10,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664288645] [2020-10-13 08:49:10,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:49:10,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:49:10,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41571334] [2020-10-13 08:49:10,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:49:10,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:49:10,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:49:10,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:49:10,390 INFO L87 Difference]: Start difference. First operand 5749 states and 6346 transitions. Second operand 7 states. [2020-10-13 08:49:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:49:11,689 INFO L93 Difference]: Finished difference Result 11373 states and 12600 transitions. [2020-10-13 08:49:11,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:49:11,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1731 [2020-10-13 08:49:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:49:11,700 INFO L225 Difference]: With dead ends: 11373 [2020-10-13 08:49:11,700 INFO L226 Difference]: Without dead ends: 5780 [2020-10-13 08:49:11,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 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 08:49:11,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2020-10-13 08:49:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5749. [2020-10-13 08:49:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5749 states. [2020-10-13 08:49:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5749 states to 5749 states and 6336 transitions. [2020-10-13 08:49:11,778 INFO L78 Accepts]: Start accepts. Automaton has 5749 states and 6336 transitions. Word has length 1731 [2020-10-13 08:49:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:49:11,779 INFO L479 AbstractCegarLoop]: Abstraction has 5749 states and 6336 transitions. [2020-10-13 08:49:11,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:49:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5749 states and 6336 transitions. [2020-10-13 08:49:11,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1763 [2020-10-13 08:49:11,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:49:11,799 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:49:11,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:49:11,799 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:49:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:49:11,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1107049969, now seen corresponding path program 1 times [2020-10-13 08:49:11,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:49:11,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352179376] [2020-10-13 08:49:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:49:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1796 [2020-10-13 08:49:17,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:49:17,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-13 08:49:17,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:49:17,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1432 [2020-10-13 08:49:17,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 08:49:17,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:49:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:49:17,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:49:17,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:49:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:49:17,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:49:17,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:49:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:49:17,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:49:17,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:49:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:49:17,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:49:17,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:49:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:49:17,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:49:17,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:49:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:49:17,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:49:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:49:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:49:17,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:49:17,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:49:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:49:17,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:49:17,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:49:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:49:17,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:49:17,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:49:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:17,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:17,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:49:17,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:17,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:49:17,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:17,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:17,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:17,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:17,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:49:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:17,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:18,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:18,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:49:18,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:49:18,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-13 08:49:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:18,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:18,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:49:18,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:49:18,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:49:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:18,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 08:49:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:18,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-13 08:49:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:18,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:18,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:18,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:49:18,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:49:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-13 08:49:18,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:49:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:49:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 08:49:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1590 [2020-10-13 08:49:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:18,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:18,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:49:18,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:49:18,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:49:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 1565 proven. 164 refuted. 0 times theorem prover too weak. 7118 trivial. 0 not checked. [2020-10-13 08:49:19,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352179376] [2020-10-13 08:49:19,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:49:19,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:49:19,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190029403] [2020-10-13 08:49:19,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:49:19,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:49:19,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:49:19,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:49:19,922 INFO L87 Difference]: Start difference. First operand 5749 states and 6336 transitions. Second operand 8 states. [2020-10-13 08:49:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:49:22,225 INFO L93 Difference]: Finished difference Result 11498 states and 12696 transitions. [2020-10-13 08:49:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:49:22,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1762 [2020-10-13 08:49:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:49:22,237 INFO L225 Difference]: With dead ends: 11498 [2020-10-13 08:49:22,237 INFO L226 Difference]: Without dead ends: 5937 [2020-10-13 08:49:22,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:49:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5937 states. [2020-10-13 08:49:22,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5937 to 5931. [2020-10-13 08:49:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5931 states. [2020-10-13 08:49:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5931 states to 5931 states and 6525 transitions. [2020-10-13 08:49:22,341 INFO L78 Accepts]: Start accepts. Automaton has 5931 states and 6525 transitions. Word has length 1762 [2020-10-13 08:49:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:49:22,342 INFO L479 AbstractCegarLoop]: Abstraction has 5931 states and 6525 transitions. [2020-10-13 08:49:22,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:49:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5931 states and 6525 transitions. [2020-10-13 08:49:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1828 [2020-10-13 08:49:22,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:49:22,376 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 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, 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, 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 08:49:22,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:49:22,377 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:49:22,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:49:22,377 INFO L82 PathProgramCache]: Analyzing trace with hash -74356358, now seen corresponding path program 1 times [2020-10-13 08:49:22,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:49:22,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225028561] [2020-10-13 08:49:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:49:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:25,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:27,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:27,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1863 [2020-10-13 08:49:27,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:49:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-13 08:49:27,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:49:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1528 [2020-10-13 08:49:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:49:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:49:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:27,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:27,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:27,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:49:27,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:49:27,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:27,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:49:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:27,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:27,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:27,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:49:27,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:49:27,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:27,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:49:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:27,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:49:28,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:49:28,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:49:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:49:28,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:49:28,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:49:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:49:28,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:49:28,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:49:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:49:28,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:49:28,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:49:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:49:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:49:28,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:49:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:49:28,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:49:28,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:49:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:49:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:49:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:49:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:49:28,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:49:28,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:49:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:49:28,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:49:28,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-13 08:49:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:49:28,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:49:28,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-13 08:49:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:49:28,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:49:28,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:49:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:49:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:49:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1504 [2020-10-13 08:49:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:49:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:49:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 08:49:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:49:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:49:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 08:49:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:49:28,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1655 [2020-10-13 08:49:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:49:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:49:29,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:49:29,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:49:29,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:49:29,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:49:29,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:49:29,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:49:29,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:49:29,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:49:29,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0