/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:11:05,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:11:05,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:11:05,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:11:05,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:11:05,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:11:05,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:11:05,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:11:05,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:11:05,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:11:06,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:11:06,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:11:06,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:11:06,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:11:06,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:11:06,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:11:06,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:11:06,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:11:06,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:11:06,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:11:06,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:11:06,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:11:06,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:11:06,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:11:06,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:11:06,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:11:06,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:11:06,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:11:06,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:11:06,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:11:06,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:11:06,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:11:06,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:11:06,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:11:06,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:11:06,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:11:06,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:11:06,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:11:06,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:11:06,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:11:06,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:11:06,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:11:06,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:11:06,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:11:06,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:11:06,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:11:06,102 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:11:06,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:11:06,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:11:06,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:11:06,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:11:06,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:11:06,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:11:06,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:11:06,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:11:06,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:11:06,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:11:06,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:11:06,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:11:06,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:11:06,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:11:06,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:11:06,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:11:06,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:11:06,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:11:06,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:11:06,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:11:06,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:11:06,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:11:06,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:11:06,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:11:06,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:11:06,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:11:06,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:11:06,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:11:06,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:11:06,474 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:11:06,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45.c [2020-10-13 08:11:06,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfb6c9ce/931d59af01024e0c85054e4dcc745506/FLAGab24de518 [2020-10-13 08:11:07,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:11:07,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label45.c [2020-10-13 08:11:07,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfb6c9ce/931d59af01024e0c85054e4dcc745506/FLAGab24de518 [2020-10-13 08:11:07,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfb6c9ce/931d59af01024e0c85054e4dcc745506 [2020-10-13 08:11:07,394 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:11:07,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:11:07,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:11:07,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:11:07,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:11:07,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:07" (1/1) ... [2020-10-13 08:11:07,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ac829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:07, skipping insertion in model container [2020-10-13 08:11:07,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:07" (1/1) ... [2020-10-13 08:11:07,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:11:07,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:11:08,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:11:08,192 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:11:08,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:11:08,369 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:11:08,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08 WrapperNode [2020-10-13 08:11:08,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:11:08,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:11:08,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:11:08,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:11:08,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (1/1) ... [2020-10-13 08:11:08,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (1/1) ... [2020-10-13 08:11:08,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (1/1) ... [2020-10-13 08:11:08,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (1/1) ... [2020-10-13 08:11:08,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (1/1) ... [2020-10-13 08:11:08,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (1/1) ... [2020-10-13 08:11:08,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (1/1) ... [2020-10-13 08:11:08,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:11:08,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:11:08,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:11:08,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:11:08,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:11:08,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:11:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:11:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:11:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:11:08,625 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:11:08,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:11:08,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:11:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:11:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:11:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:11:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:11:10,324 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:11:10,324 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:11:10,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:10 BoogieIcfgContainer [2020-10-13 08:11:10,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:11:10,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:11:10,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:11:10,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:11:10,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:11:07" (1/3) ... [2020-10-13 08:11:10,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305a892b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:10, skipping insertion in model container [2020-10-13 08:11:10,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:08" (2/3) ... [2020-10-13 08:11:10,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305a892b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:10, skipping insertion in model container [2020-10-13 08:11:10,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:10" (3/3) ... [2020-10-13 08:11:10,342 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label45.c [2020-10-13 08:11:10,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:11:10,367 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:11:10,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:11:10,422 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:11:10,423 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:11:10,424 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:11:10,424 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:11:10,424 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:11:10,424 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:11:10,424 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:11:10,425 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:11:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-13 08:11:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 08:11:10,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:10,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:10,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:10,488 INFO L82 PathProgramCache]: Analyzing trace with hash 489926403, now seen corresponding path program 1 times [2020-10-13 08:11:10,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:10,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817980115] [2020-10-13 08:11:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:11,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:11,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 08:11:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-13 08:11:11,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:11:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:11:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:11:11,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 08:11:11,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:11,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:11,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:11,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:11,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:11:11,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:11,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:11,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817980115] [2020-10-13 08:11:11,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:11:11,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:11:11,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530232061] [2020-10-13 08:11:11,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:11:11,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:11,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:11:11,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:11:11,347 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-13 08:11:13,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:13,818 INFO L93 Difference]: Finished difference Result 788 states and 1382 transitions. [2020-10-13 08:11:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:13,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 08:11:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:13,839 INFO L225 Difference]: With dead ends: 788 [2020-10-13 08:11:13,840 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 08:11:13,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 08:11:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-13 08:11:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-13 08:11:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-13 08:11:13,928 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 38 [2020-10-13 08:11:13,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:13,929 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-13 08:11:13,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:11:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-13 08:11:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 08:11:13,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:13,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:13,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:11:13,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:13,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:13,936 INFO L82 PathProgramCache]: Analyzing trace with hash -754081118, now seen corresponding path program 1 times [2020-10-13 08:11:13,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:13,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832404379] [2020-10-13 08:11:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:15,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:15,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:11:15,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:11:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1865 [2020-10-13 08:11:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:11:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 08:11:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:11:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:15,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:15,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:15,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:11:15,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:15,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:16,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:16,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:16,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:11:16,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:16,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:11:16,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:16,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:16,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:16,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:11:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:16,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832404379] [2020-10-13 08:11:16,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:16,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:16,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484461057] [2020-10-13 08:11:16,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:16,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:16,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:16,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:16,182 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 5 states. [2020-10-13 08:11:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:18,003 INFO L93 Difference]: Finished difference Result 677 states and 1007 transitions. [2020-10-13 08:11:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:18,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 08:11:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:18,009 INFO L225 Difference]: With dead ends: 677 [2020-10-13 08:11:18,009 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 08:11:18,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:11:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 08:11:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-13 08:11:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-13 08:11:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 610 transitions. [2020-10-13 08:11:18,046 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 610 transitions. Word has length 110 [2020-10-13 08:11:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:18,047 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 610 transitions. [2020-10-13 08:11:18,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 610 transitions. [2020-10-13 08:11:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 08:11:18,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:18,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:18,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:11:18,052 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:18,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1425441973, now seen corresponding path program 1 times [2020-10-13 08:11:18,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:18,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370363216] [2020-10-13 08:11:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:18,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:19,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:19,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:11:19,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-13 08:11:19,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:11:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:11:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:19,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:19,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:11:19,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:19,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:19,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:11:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:11:19,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:11:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:19,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370363216] [2020-10-13 08:11:19,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:19,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:19,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046552296] [2020-10-13 08:11:19,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:19,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:19,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:19,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:19,510 INFO L87 Difference]: Start difference. First operand 425 states and 610 transitions. Second operand 5 states. [2020-10-13 08:11:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:21,715 INFO L93 Difference]: Finished difference Result 1248 states and 1810 transitions. [2020-10-13 08:11:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:21,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 08:11:21,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:21,724 INFO L225 Difference]: With dead ends: 1248 [2020-10-13 08:11:21,724 INFO L226 Difference]: Without dead ends: 829 [2020-10-13 08:11:21,726 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 08:11:21,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-13 08:11:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 815. [2020-10-13 08:11:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:11:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1087 transitions. [2020-10-13 08:11:21,793 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1087 transitions. Word has length 111 [2020-10-13 08:11:21,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:21,794 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1087 transitions. [2020-10-13 08:11:21,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1087 transitions. [2020-10-13 08:11:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 08:11:21,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:21,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:21,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:11:21,800 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:21,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:21,800 INFO L82 PathProgramCache]: Analyzing trace with hash -517552514, now seen corresponding path program 1 times [2020-10-13 08:11:21,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:21,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596718040] [2020-10-13 08:11:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:21,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:22,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:23,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:23,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:11:23,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:11:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-10-13 08:11:23,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:11:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 08:11:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:23,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:23,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:23,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:11:23,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:23,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:23,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:11:23,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:11:23,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:11:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:23,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596718040] [2020-10-13 08:11:23,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:23,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:23,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992859255] [2020-10-13 08:11:23,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:23,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:23,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:23,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:23,542 INFO L87 Difference]: Start difference. First operand 815 states and 1087 transitions. Second operand 5 states. [2020-10-13 08:11:25,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:25,173 INFO L93 Difference]: Finished difference Result 1253 states and 1729 transitions. [2020-10-13 08:11:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:25,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 08:11:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:25,181 INFO L225 Difference]: With dead ends: 1253 [2020-10-13 08:11:25,181 INFO L226 Difference]: Without dead ends: 823 [2020-10-13 08:11:25,183 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 08:11:25,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-13 08:11:25,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 815. [2020-10-13 08:11:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:11:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1083 transitions. [2020-10-13 08:11:25,211 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1083 transitions. Word has length 112 [2020-10-13 08:11:25,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:25,211 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1083 transitions. [2020-10-13 08:11:25,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:25,211 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1083 transitions. [2020-10-13 08:11:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 08:11:25,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:25,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:25,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:11:25,215 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:25,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:25,215 INFO L82 PathProgramCache]: Analyzing trace with hash -393002478, now seen corresponding path program 1 times [2020-10-13 08:11:25,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:25,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698051170] [2020-10-13 08:11:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:25,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:25,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:26,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:26,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 08:11:26,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:11:26,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-13 08:11:26,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:11:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:11:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:26,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:26,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:11:26,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:26,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:11:26,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:11:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:26,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698051170] [2020-10-13 08:11:26,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:26,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:26,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139492536] [2020-10-13 08:11:26,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:26,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:26,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:26,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:26,796 INFO L87 Difference]: Start difference. First operand 815 states and 1083 transitions. Second operand 5 states. [2020-10-13 08:11:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:28,409 INFO L93 Difference]: Finished difference Result 1261 states and 1731 transitions. [2020-10-13 08:11:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:28,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 08:11:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:28,417 INFO L225 Difference]: With dead ends: 1261 [2020-10-13 08:11:28,417 INFO L226 Difference]: Without dead ends: 823 [2020-10-13 08:11:28,420 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 08:11:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-13 08:11:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 815. [2020-10-13 08:11:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:11:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1077 transitions. [2020-10-13 08:11:28,450 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1077 transitions. Word has length 118 [2020-10-13 08:11:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:28,451 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1077 transitions. [2020-10-13 08:11:28,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1077 transitions. [2020-10-13 08:11:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 08:11:28,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:28,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:28,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:11:28,454 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:28,455 INFO L82 PathProgramCache]: Analyzing trace with hash -438623798, now seen corresponding path program 1 times [2020-10-13 08:11:28,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:28,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146587206] [2020-10-13 08:11:28,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:28,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:29,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:29,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:29,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:11:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 976 [2020-10-13 08:11:29,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 08:11:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:11:29,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:29,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:29,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:29,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:11:29,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:29,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:29,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:29,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 08:11:29,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:11:29,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:11:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:29,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146587206] [2020-10-13 08:11:29,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:29,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:29,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904111978] [2020-10-13 08:11:29,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:29,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:29,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:29,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:29,776 INFO L87 Difference]: Start difference. First operand 815 states and 1077 transitions. Second operand 5 states. [2020-10-13 08:11:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:31,426 INFO L93 Difference]: Finished difference Result 1259 states and 1717 transitions. [2020-10-13 08:11:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:31,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 08:11:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:31,436 INFO L225 Difference]: With dead ends: 1259 [2020-10-13 08:11:31,436 INFO L226 Difference]: Without dead ends: 823 [2020-10-13 08:11:31,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:11:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-13 08:11:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 815. [2020-10-13 08:11:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:11:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1075 transitions. [2020-10-13 08:11:31,464 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1075 transitions. Word has length 122 [2020-10-13 08:11:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:31,464 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1075 transitions. [2020-10-13 08:11:31,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1075 transitions. [2020-10-13 08:11:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 08:11:31,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:31,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:31,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:11:31,467 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:31,467 INFO L82 PathProgramCache]: Analyzing trace with hash -236759642, now seen corresponding path program 1 times [2020-10-13 08:11:31,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:31,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524662004] [2020-10-13 08:11:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:32,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:32,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:11:32,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:32,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-13 08:11:32,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:11:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:11:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:32,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:32,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:32,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:32,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:32,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:11:32,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:32,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:32,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:32,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:32,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:32,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:32,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:11:32,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 08:11:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:11:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:32,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524662004] [2020-10-13 08:11:32,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:32,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:32,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383931060] [2020-10-13 08:11:32,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:32,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:32,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:32,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:32,453 INFO L87 Difference]: Start difference. First operand 815 states and 1075 transitions. Second operand 5 states. [2020-10-13 08:11:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:34,576 INFO L93 Difference]: Finished difference Result 2030 states and 2744 transitions. [2020-10-13 08:11:34,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:34,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 08:11:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:34,587 INFO L225 Difference]: With dead ends: 2030 [2020-10-13 08:11:34,588 INFO L226 Difference]: Without dead ends: 1221 [2020-10-13 08:11:34,591 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 08:11:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-10-13 08:11:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1203. [2020-10-13 08:11:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-10-13 08:11:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1550 transitions. [2020-10-13 08:11:34,632 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1550 transitions. Word has length 124 [2020-10-13 08:11:34,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:34,632 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1550 transitions. [2020-10-13 08:11:34,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1550 transitions. [2020-10-13 08:11:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:11:34,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:34,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:34,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:11:34,635 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:34,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:34,635 INFO L82 PathProgramCache]: Analyzing trace with hash 536122646, now seen corresponding path program 1 times [2020-10-13 08:11:34,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:34,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530226052] [2020-10-13 08:11:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:34,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:34,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:34,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:11:34,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-13 08:11:34,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:11:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:11:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:11:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:35,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:35,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:35,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:35,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:35,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:35,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:11:35,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:35,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:35,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:35,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:35,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:35,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-13 08:11:35,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:11:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:11:35,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530226052] [2020-10-13 08:11:35,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:11:35,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:11:35,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970519811] [2020-10-13 08:11:35,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:35,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:35,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:35,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:35,673 INFO L87 Difference]: Start difference. First operand 1203 states and 1550 transitions. Second operand 7 states. [2020-10-13 08:11:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:38,041 INFO L93 Difference]: Finished difference Result 2629 states and 3408 transitions. [2020-10-13 08:11:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:11:38,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-13 08:11:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:38,051 INFO L225 Difference]: With dead ends: 2629 [2020-10-13 08:11:38,051 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 08:11:38,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:11:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 08:11:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1413. [2020-10-13 08:11:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-10-13 08:11:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1789 transitions. [2020-10-13 08:11:38,101 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1789 transitions. Word has length 132 [2020-10-13 08:11:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:38,101 INFO L479 AbstractCegarLoop]: Abstraction has 1413 states and 1789 transitions. [2020-10-13 08:11:38,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1789 transitions. [2020-10-13 08:11:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 08:11:38,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:38,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:38,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:11:38,107 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:38,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:38,107 INFO L82 PathProgramCache]: Analyzing trace with hash 214228559, now seen corresponding path program 1 times [2020-10-13 08:11:38,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:38,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324750325] [2020-10-13 08:11:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:39,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:39,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 08:11:39,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-10-13 08:11:39,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:11:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:11:39,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:39,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:39,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:39,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:39,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:11:39,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:39,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:39,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:11:39,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 08:11:39,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:11:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:39,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:11:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:39,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:39,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:39,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-13 08:11:39,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:11:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:11:40,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324750325] [2020-10-13 08:11:40,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:40,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:11:40,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950052054] [2020-10-13 08:11:40,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:40,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:40,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:40,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:40,197 INFO L87 Difference]: Start difference. First operand 1413 states and 1789 transitions. Second operand 7 states. [2020-10-13 08:11:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:43,120 INFO L93 Difference]: Finished difference Result 3094 states and 4112 transitions. [2020-10-13 08:11:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:11:43,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-13 08:11:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:43,134 INFO L225 Difference]: With dead ends: 3094 [2020-10-13 08:11:43,135 INFO L226 Difference]: Without dead ends: 1875 [2020-10-13 08:11:43,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:11:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-10-13 08:11:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1816. [2020-10-13 08:11:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-10-13 08:11:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2252 transitions. [2020-10-13 08:11:43,210 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2252 transitions. Word has length 248 [2020-10-13 08:11:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:43,210 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2252 transitions. [2020-10-13 08:11:43,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2252 transitions. [2020-10-13 08:11:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-13 08:11:43,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:43,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:43,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:11:43,217 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:43,217 INFO L82 PathProgramCache]: Analyzing trace with hash 145620123, now seen corresponding path program 1 times [2020-10-13 08:11:43,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:43,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064307726] [2020-10-13 08:11:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:44,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:44,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 08:11:44,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:44,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1462 [2020-10-13 08:11:44,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 08:11:44,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:11:44,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:44,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:44,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:44,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:44,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:44,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:45,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:45,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:11:45,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 08:11:45,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 08:11:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:45,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:11:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:45,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:45,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:45,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 08:11:45,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:11:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:11:45,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064307726] [2020-10-13 08:11:45,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:45,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:11:45,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999012068] [2020-10-13 08:11:45,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:45,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:45,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:45,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:45,393 INFO L87 Difference]: Start difference. First operand 1816 states and 2252 transitions. Second operand 7 states. [2020-10-13 08:11:48,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:48,581 INFO L93 Difference]: Finished difference Result 4840 states and 6176 transitions. [2020-10-13 08:11:48,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:11:48,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-13 08:11:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:48,598 INFO L225 Difference]: With dead ends: 4840 [2020-10-13 08:11:48,599 INFO L226 Difference]: Without dead ends: 3218 [2020-10-13 08:11:48,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:11:48,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2020-10-13 08:11:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 2995. [2020-10-13 08:11:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2995 states. [2020-10-13 08:11:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3582 transitions. [2020-10-13 08:11:48,678 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3582 transitions. Word has length 258 [2020-10-13 08:11:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:48,679 INFO L479 AbstractCegarLoop]: Abstraction has 2995 states and 3582 transitions. [2020-10-13 08:11:48,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3582 transitions. [2020-10-13 08:11:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 08:11:48,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:48,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:48,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:11:48,686 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:48,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1542481240, now seen corresponding path program 1 times [2020-10-13 08:11:48,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:48,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310019216] [2020-10-13 08:11:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:48,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-13 08:11:50,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:11:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1688 [2020-10-13 08:11:50,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-13 08:11:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:11:50,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:50,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:50,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:50,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:50,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:50,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:50,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:11:50,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:50,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:11:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 08:11:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:11:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:11:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 08:11:50,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310019216] [2020-10-13 08:11:50,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:50,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:50,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342341887] [2020-10-13 08:11:50,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:50,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:50,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:50,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:50,902 INFO L87 Difference]: Start difference. First operand 2995 states and 3582 transitions. Second operand 5 states. [2020-10-13 08:11:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:52,526 INFO L93 Difference]: Finished difference Result 4480 states and 5501 transitions. [2020-10-13 08:11:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:52,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-13 08:11:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:52,540 INFO L225 Difference]: With dead ends: 4480 [2020-10-13 08:11:52,540 INFO L226 Difference]: Without dead ends: 3017 [2020-10-13 08:11:52,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:11:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-13 08:11:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2995. [2020-10-13 08:11:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2995 states. [2020-10-13 08:11:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3571 transitions. [2020-10-13 08:11:52,631 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3571 transitions. Word has length 260 [2020-10-13 08:11:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:52,632 INFO L479 AbstractCegarLoop]: Abstraction has 2995 states and 3571 transitions. [2020-10-13 08:11:52,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3571 transitions. [2020-10-13 08:11:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 08:11:52,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:52,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:52,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:11:52,639 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:52,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1019039425, now seen corresponding path program 1 times [2020-10-13 08:11:52,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:52,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684459729] [2020-10-13 08:11:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:52,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:54,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:56,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:56,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 08:11:56,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:11:56,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3741 [2020-10-13 08:11:56,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:56,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:11:56,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:56,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:56,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:56,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:11:56,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:56,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:56,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:11:56,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-13 08:11:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:11:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:56,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:56,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:56,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:11:56,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:11:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 08:11:56,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684459729] [2020-10-13 08:11:56,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:56,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:56,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420757408] [2020-10-13 08:11:56,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:56,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:56,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:56,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:56,769 INFO L87 Difference]: Start difference. First operand 2995 states and 3571 transitions. Second operand 5 states. [2020-10-13 08:11:58,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:58,845 INFO L93 Difference]: Finished difference Result 6776 states and 8315 transitions. [2020-10-13 08:11:58,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:58,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-13 08:11:58,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:58,858 INFO L225 Difference]: With dead ends: 6776 [2020-10-13 08:11:58,858 INFO L226 Difference]: Without dead ends: 3975 [2020-10-13 08:11:58,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:11:58,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2020-10-13 08:11:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3955. [2020-10-13 08:11:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3955 states. [2020-10-13 08:11:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 4693 transitions. [2020-10-13 08:11:58,961 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 4693 transitions. Word has length 263 [2020-10-13 08:11:58,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:58,962 INFO L479 AbstractCegarLoop]: Abstraction has 3955 states and 4693 transitions. [2020-10-13 08:11:58,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 4693 transitions. [2020-10-13 08:11:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-13 08:11:58,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:58,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:58,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:11:58,972 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:58,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:58,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1128959288, now seen corresponding path program 1 times [2020-10-13 08:11:58,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:58,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377442972] [2020-10-13 08:11:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:59,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:59,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 08:11:59,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:59,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-13 08:11:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:11:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:11:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:59,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:59,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:59,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:59,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:59,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:59,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:59,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:59,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:59,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:11:59,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:11:59,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:11:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:00,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:00,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:12:00,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:12:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:12:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-13 08:12:00,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377442972] [2020-10-13 08:12:00,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:00,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:00,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112597883] [2020-10-13 08:12:00,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:00,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:00,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:00,240 INFO L87 Difference]: Start difference. First operand 3955 states and 4693 transitions. Second operand 5 states. [2020-10-13 08:12:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:01,929 INFO L93 Difference]: Finished difference Result 6398 states and 7716 transitions. [2020-10-13 08:12:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:01,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-13 08:12:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:01,947 INFO L225 Difference]: With dead ends: 6398 [2020-10-13 08:12:01,947 INFO L226 Difference]: Without dead ends: 3969 [2020-10-13 08:12:01,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2020-10-13 08:12:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3955. [2020-10-13 08:12:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3955 states. [2020-10-13 08:12:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 4679 transitions. [2020-10-13 08:12:02,037 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 4679 transitions. Word has length 265 [2020-10-13 08:12:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:02,037 INFO L479 AbstractCegarLoop]: Abstraction has 3955 states and 4679 transitions. [2020-10-13 08:12:02,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 4679 transitions. [2020-10-13 08:12:02,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-13 08:12:02,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:02,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:02,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:12:02,046 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:02,046 INFO L82 PathProgramCache]: Analyzing trace with hash -612030198, now seen corresponding path program 1 times [2020-10-13 08:12:02,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:02,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978565636] [2020-10-13 08:12:02,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:02,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 08:12:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-13 08:12:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:12:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:12:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:03,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:03,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:03,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:03,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:03,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:03,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:03,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:03,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:03,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:03,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:12:03,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 08:12:03,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:12:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:03,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:12:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:03,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:03,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:03,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:12:03,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:03,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:12:03,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978565636] [2020-10-13 08:12:03,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:03,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:12:03,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076340401] [2020-10-13 08:12:03,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:03,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:03,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:03,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:03,707 INFO L87 Difference]: Start difference. First operand 3955 states and 4679 transitions. Second operand 7 states. [2020-10-13 08:12:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:06,713 INFO L93 Difference]: Finished difference Result 6935 states and 8781 transitions. [2020-10-13 08:12:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:12:06,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-13 08:12:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:06,749 INFO L225 Difference]: With dead ends: 6935 [2020-10-13 08:12:06,749 INFO L226 Difference]: Without dead ends: 4526 [2020-10-13 08:12:06,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:12:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2020-10-13 08:12:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 4363. [2020-10-13 08:12:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4363 states. [2020-10-13 08:12:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4363 states to 4363 states and 5146 transitions. [2020-10-13 08:12:06,872 INFO L78 Accepts]: Start accepts. Automaton has 4363 states and 5146 transitions. Word has length 279 [2020-10-13 08:12:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:06,873 INFO L479 AbstractCegarLoop]: Abstraction has 4363 states and 5146 transitions. [2020-10-13 08:12:06,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4363 states and 5146 transitions. [2020-10-13 08:12:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 08:12:06,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:06,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:06,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:12:06,883 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:06,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:06,883 INFO L82 PathProgramCache]: Analyzing trace with hash 374190289, now seen corresponding path program 1 times [2020-10-13 08:12:06,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:06,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694631107] [2020-10-13 08:12:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:10,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:10,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-13 08:12:10,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:12:10,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3471 [2020-10-13 08:12:10,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-10-13 08:12:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:12:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:10,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:10,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:10,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:10,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:10,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:10,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:10,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:12:10,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:12:10,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:10,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 08:12:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:10,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:10,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:10,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:12:10,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:12:10,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:12:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 08:12:10,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694631107] [2020-10-13 08:12:10,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:10,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:10,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126188425] [2020-10-13 08:12:10,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:10,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:10,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:10,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:10,791 INFO L87 Difference]: Start difference. First operand 4363 states and 5146 transitions. Second operand 5 states. [2020-10-13 08:12:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:12,611 INFO L93 Difference]: Finished difference Result 8148 states and 9720 transitions. [2020-10-13 08:12:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:12,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-13 08:12:12,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:12,633 INFO L225 Difference]: With dead ends: 8148 [2020-10-13 08:12:12,633 INFO L226 Difference]: Without dead ends: 5529 [2020-10-13 08:12:12,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 08:12:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2020-10-13 08:12:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 4752. [2020-10-13 08:12:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4752 states. [2020-10-13 08:12:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 5656 transitions. [2020-10-13 08:12:12,732 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 5656 transitions. Word has length 282 [2020-10-13 08:12:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:12,732 INFO L479 AbstractCegarLoop]: Abstraction has 4752 states and 5656 transitions. [2020-10-13 08:12:12,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 5656 transitions. [2020-10-13 08:12:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-13 08:12:12,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:12,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:12:12,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:12:12,739 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash 676689689, now seen corresponding path program 1 times [2020-10-13 08:12:12,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:12,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863869288] [2020-10-13 08:12:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:13,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 08:12:13,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-13 08:12:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-13 08:12:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:12:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:13,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:13,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:13,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:13,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:13,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:13,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:13,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:13,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:12:13,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:12:13,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:12:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:13,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:13,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:12:13,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:13,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:12:13,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:12:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-13 08:12:13,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863869288] [2020-10-13 08:12:13,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:13,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:13,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576707542] [2020-10-13 08:12:13,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:13,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:13,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:13,947 INFO L87 Difference]: Start difference. First operand 4752 states and 5656 transitions. Second operand 5 states. [2020-10-13 08:12:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:15,813 INFO L93 Difference]: Finished difference Result 7790 states and 9413 transitions. [2020-10-13 08:12:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:15,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-13 08:12:15,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:15,836 INFO L225 Difference]: With dead ends: 7790 [2020-10-13 08:12:15,836 INFO L226 Difference]: Without dead ends: 4768 [2020-10-13 08:12:15,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2020-10-13 08:12:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 4750. [2020-10-13 08:12:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4750 states. [2020-10-13 08:12:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 5635 transitions. [2020-10-13 08:12:15,930 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 5635 transitions. Word has length 284 [2020-10-13 08:12:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:15,931 INFO L479 AbstractCegarLoop]: Abstraction has 4750 states and 5635 transitions. [2020-10-13 08:12:15,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 5635 transitions. [2020-10-13 08:12:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 08:12:15,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:15,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:15,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:12:15,938 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:15,938 INFO L82 PathProgramCache]: Analyzing trace with hash 341021900, now seen corresponding path program 1 times [2020-10-13 08:12:15,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:15,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597123223] [2020-10-13 08:12:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:16,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:16,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-13 08:12:16,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-13 08:12:16,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 08:12:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:12:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:16,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:16,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:16,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:16,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:16,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:16,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:12:16,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:16,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:12:16,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:16,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:16,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:16,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:16,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:12:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:16,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:16,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:16,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:16,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 08:12:16,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 08:12:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-13 08:12:16,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597123223] [2020-10-13 08:12:16,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:16,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:16,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451303637] [2020-10-13 08:12:16,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:16,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:16,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:16,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:16,751 INFO L87 Difference]: Start difference. First operand 4750 states and 5635 transitions. Second operand 5 states. [2020-10-13 08:12:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:19,278 INFO L93 Difference]: Finished difference Result 9125 states and 11221 transitions. [2020-10-13 08:12:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:19,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-13 08:12:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:19,302 INFO L225 Difference]: With dead ends: 9125 [2020-10-13 08:12:19,302 INFO L226 Difference]: Without dead ends: 5927 [2020-10-13 08:12:19,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5927 states. [2020-10-13 08:12:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5927 to 5906. [2020-10-13 08:12:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5906 states. [2020-10-13 08:12:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 7001 transitions. [2020-10-13 08:12:19,419 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 7001 transitions. Word has length 285 [2020-10-13 08:12:19,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:19,421 INFO L479 AbstractCegarLoop]: Abstraction has 5906 states and 7001 transitions. [2020-10-13 08:12:19,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 7001 transitions. [2020-10-13 08:12:19,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-13 08:12:19,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:19,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:19,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:12:19,429 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:19,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:19,429 INFO L82 PathProgramCache]: Analyzing trace with hash 162513754, now seen corresponding path program 1 times [2020-10-13 08:12:19,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:19,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074636762] [2020-10-13 08:12:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:21,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:21,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-13 08:12:21,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1521 [2020-10-13 08:12:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 08:12:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:12:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:21,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:21,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:21,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:21,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:21,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:21,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:21,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:21,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:12:21,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:12:21,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 08:12:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 08:12:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:21,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:21,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:21,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:21,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 08:12:21,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:12:21,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074636762] [2020-10-13 08:12:21,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:21,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:12:21,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727948942] [2020-10-13 08:12:21,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:12:21,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:21,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:12:21,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:12:21,565 INFO L87 Difference]: Start difference. First operand 5906 states and 7001 transitions. Second operand 8 states. [2020-10-13 08:12:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:25,459 INFO L93 Difference]: Finished difference Result 13961 states and 16953 transitions. [2020-10-13 08:12:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:12:25,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 287 [2020-10-13 08:12:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:25,494 INFO L225 Difference]: With dead ends: 13961 [2020-10-13 08:12:25,494 INFO L226 Difference]: Without dead ends: 8249 [2020-10-13 08:12:25,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:12:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8249 states. [2020-10-13 08:12:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8249 to 7081. [2020-10-13 08:12:25,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7081 states. [2020-10-13 08:12:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 8480 transitions. [2020-10-13 08:12:25,659 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 8480 transitions. Word has length 287 [2020-10-13 08:12:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:25,660 INFO L479 AbstractCegarLoop]: Abstraction has 7081 states and 8480 transitions. [2020-10-13 08:12:25,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:12:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 8480 transitions. [2020-10-13 08:12:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-13 08:12:25,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:25,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:25,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:12:25,671 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:25,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:25,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1610789941, now seen corresponding path program 1 times [2020-10-13 08:12:25,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:25,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851227101] [2020-10-13 08:12:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:25,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:26,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:27,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-13 08:12:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-13 08:12:27,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:12:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-13 08:12:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:12:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:27,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:27,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:27,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:27,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:27,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:28,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:12:28,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 08:12:28,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:12:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:28,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 08:12:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:28,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:28,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:28,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:12:28,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:12:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 120 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:12:28,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851227101] [2020-10-13 08:12:28,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:28,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:12:28,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802580402] [2020-10-13 08:12:28,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:12:28,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:28,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:12:28,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:12:28,266 INFO L87 Difference]: Start difference. First operand 7081 states and 8480 transitions. Second operand 8 states. [2020-10-13 08:12:32,760 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-13 08:12:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:34,235 INFO L93 Difference]: Finished difference Result 16882 states and 20375 transitions. [2020-10-13 08:12:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 08:12:34,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 291 [2020-10-13 08:12:34,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:34,262 INFO L225 Difference]: With dead ends: 16882 [2020-10-13 08:12:34,262 INFO L226 Difference]: Without dead ends: 9807 [2020-10-13 08:12:34,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-13 08:12:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9807 states. [2020-10-13 08:12:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9807 to 8225. [2020-10-13 08:12:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8225 states. [2020-10-13 08:12:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8225 states to 8225 states and 9763 transitions. [2020-10-13 08:12:34,448 INFO L78 Accepts]: Start accepts. Automaton has 8225 states and 9763 transitions. Word has length 291 [2020-10-13 08:12:34,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:34,448 INFO L479 AbstractCegarLoop]: Abstraction has 8225 states and 9763 transitions. [2020-10-13 08:12:34,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:12:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8225 states and 9763 transitions. [2020-10-13 08:12:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-13 08:12:34,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:34,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:12:34,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:12:34,456 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1954847677, now seen corresponding path program 1 times [2020-10-13 08:12:34,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:34,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858034669] [2020-10-13 08:12:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:34,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:36,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:36,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 08:12:36,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:12:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1962 [2020-10-13 08:12:36,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:12:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:12:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:36,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:36,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:36,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:36,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:36,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 08:12:36,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:12:36,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 08:12:36,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 08:12:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:36,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:36,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:36,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:12:36,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:12:37,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858034669] [2020-10-13 08:12:37,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:37,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:12:37,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509741667] [2020-10-13 08:12:37,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:37,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:37,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:37,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:37,038 INFO L87 Difference]: Start difference. First operand 8225 states and 9763 transitions. Second operand 7 states. [2020-10-13 08:12:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:39,779 INFO L93 Difference]: Finished difference Result 17650 states and 21122 transitions. [2020-10-13 08:12:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:12:39,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-13 08:12:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:39,807 INFO L225 Difference]: With dead ends: 17650 [2020-10-13 08:12:39,807 INFO L226 Difference]: Without dead ends: 9809 [2020-10-13 08:12:39,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:12:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9809 states. [2020-10-13 08:12:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9809 to 9000. [2020-10-13 08:12:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-13 08:12:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 10655 transitions. [2020-10-13 08:12:40,013 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 10655 transitions. Word has length 295 [2020-10-13 08:12:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:40,014 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 10655 transitions. [2020-10-13 08:12:40,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 10655 transitions. [2020-10-13 08:12:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-13 08:12:40,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:40,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:40,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:12:40,025 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:40,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1466353770, now seen corresponding path program 1 times [2020-10-13 08:12:40,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:40,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268533679] [2020-10-13 08:12:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:41,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-13 08:12:41,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-13 08:12:41,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 08:12:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:12:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-13 08:12:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:42,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:42,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:42,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:42,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:42,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:42,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:42,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:42,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 08:12:42,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:42,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:12:42,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:42,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:12:42,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:42,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:42,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:42,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:12:42,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:12:42,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 159 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:12:42,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268533679] [2020-10-13 08:12:42,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:42,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 08:12:42,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703295903] [2020-10-13 08:12:42,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 08:12:42,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:42,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 08:12:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:12:42,643 INFO L87 Difference]: Start difference. First operand 9000 states and 10655 transitions. Second operand 9 states. [2020-10-13 08:12:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:47,708 INFO L93 Difference]: Finished difference Result 17178 states and 20745 transitions. [2020-10-13 08:12:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 08:12:47,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 344 [2020-10-13 08:12:47,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:47,752 INFO L225 Difference]: With dead ends: 17178 [2020-10-13 08:12:47,752 INFO L226 Difference]: Without dead ends: 17176 [2020-10-13 08:12:47,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:12:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17176 states. [2020-10-13 08:12:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17176 to 14074. [2020-10-13 08:12:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14074 states. [2020-10-13 08:12:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 17040 transitions. [2020-10-13 08:12:48,045 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 17040 transitions. Word has length 344 [2020-10-13 08:12:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:48,046 INFO L479 AbstractCegarLoop]: Abstraction has 14074 states and 17040 transitions. [2020-10-13 08:12:48,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 08:12:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 17040 transitions. [2020-10-13 08:12:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-13 08:12:48,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:48,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:48,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:12:48,062 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash -2027254857, now seen corresponding path program 1 times [2020-10-13 08:12:48,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:48,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58045645] [2020-10-13 08:12:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:53,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:53,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-13 08:12:53,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:12:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 08:12:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 275 [2020-10-13 08:12:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:12:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:53,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:53,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:53,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:53,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:53,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:53,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:53,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:12:53,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:12:53,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:53,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:12:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:53,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:53,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:12:53,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 08:12:53,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:12:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-13 08:12:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:53,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:53,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:53,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 08:12:53,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:53,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-13 08:12:53,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58045645] [2020-10-13 08:12:53,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:53,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:12:53,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741450454] [2020-10-13 08:12:53,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:53,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:53,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:53,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:53,956 INFO L87 Difference]: Start difference. First operand 14074 states and 17040 transitions. Second operand 7 states. [2020-10-13 08:12:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:56,983 INFO L93 Difference]: Finished difference Result 30330 states and 37257 transitions. [2020-10-13 08:12:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:12:56,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-13 08:12:56,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:57,035 INFO L225 Difference]: With dead ends: 30330 [2020-10-13 08:12:57,036 INFO L226 Difference]: Without dead ends: 16640 [2020-10-13 08:12:57,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:12:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16640 states. [2020-10-13 08:12:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16640 to 16020. [2020-10-13 08:12:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16020 states. [2020-10-13 08:12:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16020 states to 16020 states and 19548 transitions. [2020-10-13 08:12:57,356 INFO L78 Accepts]: Start accepts. Automaton has 16020 states and 19548 transitions. Word has length 396 [2020-10-13 08:12:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:57,357 INFO L479 AbstractCegarLoop]: Abstraction has 16020 states and 19548 transitions. [2020-10-13 08:12:57,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 16020 states and 19548 transitions. [2020-10-13 08:12:57,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-13 08:12:57,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:57,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:57,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:12:57,373 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:57,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:57,373 INFO L82 PathProgramCache]: Analyzing trace with hash 998426672, now seen corresponding path program 1 times [2020-10-13 08:12:57,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:57,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310741202] [2020-10-13 08:12:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:01,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:01,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-13 08:13:01,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:13:01,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4084 [2020-10-13 08:13:01,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:01,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 373 [2020-10-13 08:13:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:01,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:01,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:01,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:01,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:01,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:13:01,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:01,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:01,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:13:01,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:01,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:13:01,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:01,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:01,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:13:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:01,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:01,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:01,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:01,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:13:01,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 08:13:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:01,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:01,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:13:01,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:01,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:13:01,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 08:13:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:01,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2020-10-13 08:13:02,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310741202] [2020-10-13 08:13:02,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:13:02,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:13:02,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278925704] [2020-10-13 08:13:02,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:02,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:02,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:02,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:02,048 INFO L87 Difference]: Start difference. First operand 16020 states and 19548 transitions. Second operand 5 states. [2020-10-13 08:13:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:03,732 INFO L93 Difference]: Finished difference Result 29339 states and 36043 transitions. [2020-10-13 08:13:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:13:03,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2020-10-13 08:13:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:03,774 INFO L225 Difference]: With dead ends: 29339 [2020-10-13 08:13:03,774 INFO L226 Difference]: Without dead ends: 16023 [2020-10-13 08:13:03,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:13:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16023 states. [2020-10-13 08:13:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16023 to 15984. [2020-10-13 08:13:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15984 states. [2020-10-13 08:13:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15984 states to 15984 states and 19479 transitions. [2020-10-13 08:13:04,076 INFO L78 Accepts]: Start accepts. Automaton has 15984 states and 19479 transitions. Word has length 399 [2020-10-13 08:13:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:04,076 INFO L479 AbstractCegarLoop]: Abstraction has 15984 states and 19479 transitions. [2020-10-13 08:13:04,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:13:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15984 states and 19479 transitions. [2020-10-13 08:13:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-13 08:13:04,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:04,091 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:04,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:13:04,092 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:04,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:04,092 INFO L82 PathProgramCache]: Analyzing trace with hash -502122164, now seen corresponding path program 1 times [2020-10-13 08:13:04,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:04,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928012271] [2020-10-13 08:13:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:06,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:06,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-13 08:13:06,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1850 [2020-10-13 08:13:06,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:06,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:06,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:13:06,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:06,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:06,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:06,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:06,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:06,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:06,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:06,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:06,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:06,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:06,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:13:06,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:06,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:06,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:13:06,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:13:06,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:13:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:06,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:13:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:06,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:06,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:13:06,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-13 08:13:06,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928012271] [2020-10-13 08:13:06,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:06,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:06,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328887445] [2020-10-13 08:13:06,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:06,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:06,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:06,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:06,616 INFO L87 Difference]: Start difference. First operand 15984 states and 19479 transitions. Second operand 7 states. [2020-10-13 08:13:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:10,119 INFO L93 Difference]: Finished difference Result 29836 states and 37348 transitions. [2020-10-13 08:13:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:13:10,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2020-10-13 08:13:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:10,168 INFO L225 Difference]: With dead ends: 29836 [2020-10-13 08:13:10,169 INFO L226 Difference]: Without dead ends: 16362 [2020-10-13 08:13:10,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:13:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16362 states. [2020-10-13 08:13:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16362 to 16179. [2020-10-13 08:13:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16179 states. [2020-10-13 08:13:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16179 states to 16179 states and 19631 transitions. [2020-10-13 08:13:10,524 INFO L78 Accepts]: Start accepts. Automaton has 16179 states and 19631 transitions. Word has length 401 [2020-10-13 08:13:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:10,525 INFO L479 AbstractCegarLoop]: Abstraction has 16179 states and 19631 transitions. [2020-10-13 08:13:10,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 16179 states and 19631 transitions. [2020-10-13 08:13:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-13 08:13:10,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:10,541 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:10,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:13:10,541 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:10,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:10,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1602737705, now seen corresponding path program 1 times [2020-10-13 08:13:10,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:10,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407422207] [2020-10-13 08:13:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:12,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-13 08:13:14,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:13:14,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3657 [2020-10-13 08:13:14,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:13:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:14,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:14,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:14,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:13:14,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 08:13:14,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:13:14,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 08:13:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:13:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:14,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:13:14,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-13 08:13:14,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407422207] [2020-10-13 08:13:14,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:14,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:14,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066049441] [2020-10-13 08:13:14,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:14,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:14,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:14,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:14,788 INFO L87 Difference]: Start difference. First operand 16179 states and 19631 transitions. Second operand 7 states. [2020-10-13 08:13:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:18,482 INFO L93 Difference]: Finished difference Result 32032 states and 39109 transitions. [2020-10-13 08:13:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:13:18,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2020-10-13 08:13:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:18,506 INFO L225 Difference]: With dead ends: 32032 [2020-10-13 08:13:18,507 INFO L226 Difference]: Without dead ends: 16237 [2020-10-13 08:13:18,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16237 states. [2020-10-13 08:13:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16237 to 14286. [2020-10-13 08:13:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14286 states. [2020-10-13 08:13:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14286 states to 14286 states and 16903 transitions. [2020-10-13 08:13:18,763 INFO L78 Accepts]: Start accepts. Automaton has 14286 states and 16903 transitions. Word has length 401 [2020-10-13 08:13:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:18,763 INFO L479 AbstractCegarLoop]: Abstraction has 14286 states and 16903 transitions. [2020-10-13 08:13:18,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:18,763 INFO L276 IsEmpty]: Start isEmpty. Operand 14286 states and 16903 transitions. [2020-10-13 08:13:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-13 08:13:18,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:18,776 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:18,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:13:18,777 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:18,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1626268719, now seen corresponding path program 1 times [2020-10-13 08:13:18,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:18,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32399013] [2020-10-13 08:13:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:19,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-13 08:13:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3639 [2020-10-13 08:13:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:13:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-13 08:13:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:13:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:22,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:22,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:22,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:22,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:13:22,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:22,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:13:22,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:13:22,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 08:13:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-13 08:13:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:23,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:23,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:23,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:23,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-13 08:13:23,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:13:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 08:13:23,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32399013] [2020-10-13 08:13:23,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:23,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:23,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527619622] [2020-10-13 08:13:23,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:23,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:23,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:23,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:23,865 INFO L87 Difference]: Start difference. First operand 14286 states and 16903 transitions. Second operand 7 states. [2020-10-13 08:13:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:28,056 INFO L93 Difference]: Finished difference Result 26298 states and 31265 transitions. [2020-10-13 08:13:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:13:28,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-13 08:13:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:28,087 INFO L225 Difference]: With dead ends: 26298 [2020-10-13 08:13:28,087 INFO L226 Difference]: Without dead ends: 14138 [2020-10-13 08:13:28,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:13:28,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14138 states. [2020-10-13 08:13:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14138 to 14100. [2020-10-13 08:13:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14100 states. [2020-10-13 08:13:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14100 states to 14100 states and 16642 transitions. [2020-10-13 08:13:28,329 INFO L78 Accepts]: Start accepts. Automaton has 14100 states and 16642 transitions. Word has length 445 [2020-10-13 08:13:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:28,330 INFO L479 AbstractCegarLoop]: Abstraction has 14100 states and 16642 transitions. [2020-10-13 08:13:28,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 14100 states and 16642 transitions. [2020-10-13 08:13:28,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-13 08:13:28,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:28,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:28,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:13:28,341 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:28,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:28,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1771416160, now seen corresponding path program 1 times [2020-10-13 08:13:28,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:28,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550469249] [2020-10-13 08:13:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:30,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-13 08:13:30,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2042 [2020-10-13 08:13:30,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:13:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:13:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:30,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:30,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:30,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:30,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:30,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:30,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:30,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:13:30,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:13:30,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:30,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:30,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:30,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:13:30,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:13:30,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:13:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-13 08:13:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:30,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:30,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:13:30,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 08:13:30,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:13:30,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 182 proven. 87 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-13 08:13:31,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550469249] [2020-10-13 08:13:31,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:31,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:31,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902977771] [2020-10-13 08:13:31,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:31,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:31,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:31,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:31,109 INFO L87 Difference]: Start difference. First operand 14100 states and 16642 transitions. Second operand 7 states. [2020-10-13 08:13:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:34,783 INFO L93 Difference]: Finished difference Result 30136 states and 36353 transitions. [2020-10-13 08:13:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:13:34,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-13 08:13:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:34,818 INFO L225 Difference]: With dead ends: 30136 [2020-10-13 08:13:34,818 INFO L226 Difference]: Without dead ends: 16420 [2020-10-13 08:13:34,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16420 states. [2020-10-13 08:13:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16420 to 16195. [2020-10-13 08:13:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16195 states. [2020-10-13 08:13:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16195 states to 16195 states and 18879 transitions. [2020-10-13 08:13:35,087 INFO L78 Accepts]: Start accepts. Automaton has 16195 states and 18879 transitions. Word has length 448 [2020-10-13 08:13:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:35,088 INFO L479 AbstractCegarLoop]: Abstraction has 16195 states and 18879 transitions. [2020-10-13 08:13:35,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 16195 states and 18879 transitions. [2020-10-13 08:13:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-13 08:13:35,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:35,105 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:35,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:13:35,105 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:35,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1453724843, now seen corresponding path program 1 times [2020-10-13 08:13:35,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:35,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39084828] [2020-10-13 08:13:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:35,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:35,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:38,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-13 08:13:40,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:13:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 08:13:40,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:13:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 08:13:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:40,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:13:40,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:40,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:13:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 08:13:40,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:13:40,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 08:13:40,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:13:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:13:40,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:13:40,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:13:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-13 08:13:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:40,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:13:40,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:13:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 305 proven. 86 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2020-10-13 08:13:40,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39084828] [2020-10-13 08:13:40,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:40,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:40,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780121023] [2020-10-13 08:13:40,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:40,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:40,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:40,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:40,757 INFO L87 Difference]: Start difference. First operand 16195 states and 18879 transitions. Second operand 7 states. [2020-10-13 08:13:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:44,737 INFO L93 Difference]: Finished difference Result 31464 states and 36770 transitions. [2020-10-13 08:13:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:13:44,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 488 [2020-10-13 08:13:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:44,761 INFO L225 Difference]: With dead ends: 31464 [2020-10-13 08:13:44,761 INFO L226 Difference]: Without dead ends: 13863 [2020-10-13 08:13:44,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:44,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13863 states. [2020-10-13 08:13:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13863 to 13253. [2020-10-13 08:13:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13253 states. [2020-10-13 08:13:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13253 states to 13253 states and 15124 transitions. [2020-10-13 08:13:44,964 INFO L78 Accepts]: Start accepts. Automaton has 13253 states and 15124 transitions. Word has length 488 [2020-10-13 08:13:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:44,964 INFO L479 AbstractCegarLoop]: Abstraction has 13253 states and 15124 transitions. [2020-10-13 08:13:44,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 13253 states and 15124 transitions. [2020-10-13 08:13:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-13 08:13:44,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:44,979 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:44,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 08:13:44,979 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:44,980 INFO L82 PathProgramCache]: Analyzing trace with hash -39024606, now seen corresponding path program 1 times [2020-10-13 08:13:44,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:44,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770531121] [2020-10-13 08:13:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-13 08:13:47,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2362 [2020-10-13 08:13:47,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-13 08:13:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:13:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:47,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:47,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:47,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:47,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:13:47,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:13:47,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:47,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:13:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:13:47,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:13:47,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-13 08:13:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:47,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:47,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:13:47,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:13:47,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 08:13:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2020-10-13 08:13:48,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770531121] [2020-10-13 08:13:48,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:48,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:13:48,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196516789] [2020-10-13 08:13:48,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:48,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:48,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:48,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:48,075 INFO L87 Difference]: Start difference. First operand 13253 states and 15124 transitions. Second operand 5 states. [2020-10-13 08:13:50,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:50,521 INFO L93 Difference]: Finished difference Result 27264 states and 31122 transitions. [2020-10-13 08:13:50,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:13:50,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 500 [2020-10-13 08:13:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:50,549 INFO L225 Difference]: With dead ends: 27264 [2020-10-13 08:13:50,549 INFO L226 Difference]: Without dead ends: 14205 [2020-10-13 08:13:50,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:13:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14205 states. [2020-10-13 08:13:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14205 to 13603. [2020-10-13 08:13:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13603 states. [2020-10-13 08:13:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13603 states to 13603 states and 15381 transitions. [2020-10-13 08:13:50,904 INFO L78 Accepts]: Start accepts. Automaton has 13603 states and 15381 transitions. Word has length 500 [2020-10-13 08:13:50,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:50,904 INFO L479 AbstractCegarLoop]: Abstraction has 13603 states and 15381 transitions. [2020-10-13 08:13:50,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:13:50,905 INFO L276 IsEmpty]: Start isEmpty. Operand 13603 states and 15381 transitions. [2020-10-13 08:13:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-13 08:13:50,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:50,917 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:13:50,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 08:13:50,918 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1892092307, now seen corresponding path program 1 times [2020-10-13 08:13:50,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:50,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914224149] [2020-10-13 08:13:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:51,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:53,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-13 08:13:56,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:13:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 08:13:56,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 431 [2020-10-13 08:13:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:56,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:56,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:13:56,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:13:56,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:13:56,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:13:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:13:56,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:13:56,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:56,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-13 08:13:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:13:56,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:13:56,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:13:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:13:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:56,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:56,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:56,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:13:56,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-13 08:13:56,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914224149] [2020-10-13 08:13:56,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:56,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:56,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786358512] [2020-10-13 08:13:56,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:56,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:56,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:56,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:56,725 INFO L87 Difference]: Start difference. First operand 13603 states and 15381 transitions. Second operand 7 states. [2020-10-13 08:14:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:00,201 INFO L93 Difference]: Finished difference Result 25703 states and 29110 transitions. [2020-10-13 08:14:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:14:00,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-13 08:14:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:00,221 INFO L225 Difference]: With dead ends: 25703 [2020-10-13 08:14:00,221 INFO L226 Difference]: Without dead ends: 14022 [2020-10-13 08:14:00,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:14:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2020-10-13 08:14:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 13415. [2020-10-13 08:14:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13415 states. [2020-10-13 08:14:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13415 states to 13415 states and 15141 transitions. [2020-10-13 08:14:00,409 INFO L78 Accepts]: Start accepts. Automaton has 13415 states and 15141 transitions. Word has length 549 [2020-10-13 08:14:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:00,410 INFO L479 AbstractCegarLoop]: Abstraction has 13415 states and 15141 transitions. [2020-10-13 08:14:00,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 13415 states and 15141 transitions. [2020-10-13 08:14:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-13 08:14:00,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:00,424 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:14:00,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 08:14:00,424 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:00,425 INFO L82 PathProgramCache]: Analyzing trace with hash -993080548, now seen corresponding path program 1 times [2020-10-13 08:14:00,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:00,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198280668] [2020-10-13 08:14:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-13 08:14:04,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:14:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3725 [2020-10-13 08:14:04,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 441 [2020-10-13 08:14:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:14:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:04,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:04,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:04,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:04,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:14:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:14:04,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:14:04,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:14:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:04,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:14:04,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:04,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:14:04,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-13 08:14:04,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:04,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-13 08:14:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:04,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:04,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:14:04,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:04,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 08:14:04,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:14:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:14:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:14:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 407 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-13 08:14:05,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198280668] [2020-10-13 08:14:05,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:05,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:14:05,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399491643] [2020-10-13 08:14:05,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:14:05,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:05,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:14:05,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:14:05,414 INFO L87 Difference]: Start difference. First operand 13415 states and 15141 transitions. Second operand 7 states. [2020-10-13 08:14:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:09,985 INFO L93 Difference]: Finished difference Result 27047 states and 30608 transitions. [2020-10-13 08:14:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:14:09,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-13 08:14:09,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:10,012 INFO L225 Difference]: With dead ends: 27047 [2020-10-13 08:14:10,012 INFO L226 Difference]: Without dead ends: 15554 [2020-10-13 08:14:10,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:14:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15554 states. [2020-10-13 08:14:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15554 to 14935. [2020-10-13 08:14:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14935 states. [2020-10-13 08:14:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14935 states to 14935 states and 16773 transitions. [2020-10-13 08:14:10,195 INFO L78 Accepts]: Start accepts. Automaton has 14935 states and 16773 transitions. Word has length 560 [2020-10-13 08:14:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:10,196 INFO L479 AbstractCegarLoop]: Abstraction has 14935 states and 16773 transitions. [2020-10-13 08:14:10,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:14:10,196 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states and 16773 transitions. [2020-10-13 08:14:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-13 08:14:10,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:10,207 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-13 08:14:10,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 08:14:10,208 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:10,208 INFO L82 PathProgramCache]: Analyzing trace with hash -386337409, now seen corresponding path program 1 times [2020-10-13 08:14:10,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:10,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571357241] [2020-10-13 08:14:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:10,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 607 [2020-10-13 08:14:12,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:14:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2458 [2020-10-13 08:14:12,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-10-13 08:14:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:12,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:12,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:12,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:12,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:12,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:12,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:14:12,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:12,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:12,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:12,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:12,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:14:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:12,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:14:12,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:12,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:12,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 08:14:12,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:12,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-13 08:14:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:13,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:13,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:14:13,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:14:13,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:14:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:13,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-13 08:14:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:13,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:13,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:14:13,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:14:13,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:14:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 135 proven. 4 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-13 08:14:13,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571357241] [2020-10-13 08:14:13,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:13,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:14:13,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312348183] [2020-10-13 08:14:13,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:14:13,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:13,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:14:13,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:14:13,317 INFO L87 Difference]: Start difference. First operand 14935 states and 16773 transitions. Second operand 5 states. [2020-10-13 08:14:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:15,071 INFO L93 Difference]: Finished difference Result 27988 states and 31505 transitions. [2020-10-13 08:14:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:14:15,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 591 [2020-10-13 08:14:15,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:15,094 INFO L225 Difference]: With dead ends: 27988 [2020-10-13 08:14:15,094 INFO L226 Difference]: Without dead ends: 14975 [2020-10-13 08:14:15,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:14:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14975 states. [2020-10-13 08:14:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14975 to 14929. [2020-10-13 08:14:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14929 states. [2020-10-13 08:14:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14929 states to 14929 states and 16753 transitions. [2020-10-13 08:14:15,264 INFO L78 Accepts]: Start accepts. Automaton has 14929 states and 16753 transitions. Word has length 591 [2020-10-13 08:14:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:15,265 INFO L479 AbstractCegarLoop]: Abstraction has 14929 states and 16753 transitions. [2020-10-13 08:14:15,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:14:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 14929 states and 16753 transitions. [2020-10-13 08:14:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-13 08:14:15,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:15,279 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:14:15,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 08:14:15,280 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2022129502, now seen corresponding path program 1 times [2020-10-13 08:14:15,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:15,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475377573] [2020-10-13 08:14:15,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:15,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:20,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-13 08:14:20,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:14:20,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 08:14:20,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:14:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-13 08:14:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:14:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:20,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:14:20,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:20,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:14:20,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:14:20,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:20,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:14:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:20,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:14:20,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:20,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:14:20,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:20,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:20,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:14:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:14:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:14:20,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-13 08:14:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:20,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:14:20,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:20,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:14:20,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:20,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:20,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-13 08:14:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:20,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:20,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:14:20,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 08:14:20,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:14:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 162 proven. 5 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2020-10-13 08:14:21,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475377573] [2020-10-13 08:14:21,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:21,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:14:21,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583682396] [2020-10-13 08:14:21,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:14:21,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:21,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:14:21,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:14:21,189 INFO L87 Difference]: Start difference. First operand 14929 states and 16753 transitions. Second operand 6 states. [2020-10-13 08:14:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:25,581 INFO L93 Difference]: Finished difference Result 28559 states and 32085 transitions. [2020-10-13 08:14:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:14:25,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 596 [2020-10-13 08:14:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:25,609 INFO L225 Difference]: With dead ends: 28559 [2020-10-13 08:14:25,609 INFO L226 Difference]: Without dead ends: 15552 [2020-10-13 08:14:25,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:14:25,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15552 states. [2020-10-13 08:14:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15552 to 14542. [2020-10-13 08:14:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14542 states. [2020-10-13 08:14:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14542 states to 14542 states and 16168 transitions. [2020-10-13 08:14:25,924 INFO L78 Accepts]: Start accepts. Automaton has 14542 states and 16168 transitions. Word has length 596 [2020-10-13 08:14:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:25,925 INFO L479 AbstractCegarLoop]: Abstraction has 14542 states and 16168 transitions. [2020-10-13 08:14:25,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:14:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14542 states and 16168 transitions. [2020-10-13 08:14:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-13 08:14:25,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:25,948 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:14:25,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 08:14:25,949 INFO L427 AbstractCegarLoop]: === Iteration 34 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:25,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:25,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1960154770, now seen corresponding path program 1 times [2020-10-13 08:14:25,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:25,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920075765] [2020-10-13 08:14:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:27,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:29,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:29,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 630 [2020-10-13 08:14:29,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:14:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3147 [2020-10-13 08:14:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 494 [2020-10-13 08:14:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:29,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:29,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:29,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:29,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:29,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:29,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:29,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:29,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:29,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:29,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:29,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:29,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:14:29,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:29,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:29,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:14:29,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:14:29,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:29,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-13 08:14:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:29,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:29,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 08:14:29,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:14:29,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-13 08:14:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-10-13 08:14:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:29,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:14:29,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 08:14:29,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:14:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2020-10-13 08:14:29,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920075765] [2020-10-13 08:14:29,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:29,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:14:29,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273125832] [2020-10-13 08:14:29,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:14:29,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:29,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:14:29,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:14:29,903 INFO L87 Difference]: Start difference. First operand 14542 states and 16168 transitions. Second operand 5 states. [2020-10-13 08:14:31,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:31,480 INFO L93 Difference]: Finished difference Result 28140 states and 31281 transitions. [2020-10-13 08:14:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:14:31,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 614 [2020-10-13 08:14:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:31,510 INFO L225 Difference]: With dead ends: 28140 [2020-10-13 08:14:31,510 INFO L226 Difference]: Without dead ends: 13794 [2020-10-13 08:14:31,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:14:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13794 states. [2020-10-13 08:14:31,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13794 to 13754. [2020-10-13 08:14:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13754 states. [2020-10-13 08:14:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13754 states to 13754 states and 15255 transitions. [2020-10-13 08:14:31,689 INFO L78 Accepts]: Start accepts. Automaton has 13754 states and 15255 transitions. Word has length 614 [2020-10-13 08:14:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:31,690 INFO L479 AbstractCegarLoop]: Abstraction has 13754 states and 15255 transitions. [2020-10-13 08:14:31,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:14:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13754 states and 15255 transitions. [2020-10-13 08:14:31,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-13 08:14:31,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:31,701 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:14:31,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 08:14:31,701 INFO L427 AbstractCegarLoop]: === Iteration 35 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:31,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:31,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1308039795, now seen corresponding path program 1 times [2020-10-13 08:14:31,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:31,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30945679] [2020-10-13 08:14:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:36,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:36,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 631 [2020-10-13 08:14:36,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:14:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 08:14:36,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 324 [2020-10-13 08:14:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:36,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:36,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:36,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:36,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:36,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:14:36,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:36,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:14:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:36,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:36,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:14:36,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:36,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:14:36,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:14:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:37,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:37,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 08:14:37,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:37,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:14:37,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:37,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:37,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 08:14:37,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:37,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-13 08:14:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:14:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:14:37,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:14:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-13 08:14:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:37,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:37,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:37,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:14:37,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:14:37,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:14:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:14:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:14:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 135 proven. 4 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2020-10-13 08:14:37,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30945679] [2020-10-13 08:14:37,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:14:37,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:14:37,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113093600] [2020-10-13 08:14:37,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:14:37,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:37,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:14:37,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:14:37,402 INFO L87 Difference]: Start difference. First operand 13754 states and 15255 transitions. Second operand 5 states. [2020-10-13 08:14:39,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:14:39,927 INFO L93 Difference]: Finished difference Result 25417 states and 28279 transitions. [2020-10-13 08:14:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:14:39,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 615 [2020-10-13 08:14:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:14:39,949 INFO L225 Difference]: With dead ends: 25417 [2020-10-13 08:14:39,949 INFO L226 Difference]: Without dead ends: 13387 [2020-10-13 08:14:39,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:14:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13387 states. [2020-10-13 08:14:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13387 to 12211. [2020-10-13 08:14:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12211 states. [2020-10-13 08:14:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 13393 transitions. [2020-10-13 08:14:40,083 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 13393 transitions. Word has length 615 [2020-10-13 08:14:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:14:40,084 INFO L479 AbstractCegarLoop]: Abstraction has 12211 states and 13393 transitions. [2020-10-13 08:14:40,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:14:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 13393 transitions. [2020-10-13 08:14:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2020-10-13 08:14:40,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:40,094 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:14:40,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 08:14:40,094 INFO L427 AbstractCegarLoop]: === Iteration 36 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:40,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1808354104, now seen corresponding path program 1 times [2020-10-13 08:14:40,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:40,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514034562] [2020-10-13 08:14:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:40,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:41,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking...