/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/Problem17_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:31:19,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:31:19,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:31:19,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:31:19,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:31:19,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:31:19,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:31:20,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:31:20,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:31:20,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:31:20,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:31:20,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:31:20,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:31:20,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:31:20,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:31:20,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:31:20,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:31:20,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:31:20,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:31:20,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:31:20,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:31:20,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:31:20,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:31:20,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:31:20,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:31:20,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:31:20,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:31:20,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:31:20,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:31:20,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:31:20,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:31:20,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:31:20,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:31:20,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:31:20,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:31:20,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:31:20,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:31:20,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:31:20,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:31:20,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:31:20,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:31:20,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:31:20,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:31:20,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:31:20,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:31:20,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:31:20,121 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:31:20,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:31:20,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:31:20,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:31:20,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:31:20,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:31:20,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:31:20,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:31:20,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:31:20,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:31:20,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:31:20,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:31:20,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:31:20,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:31:20,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:31:20,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:31:20,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:31:20,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:31:20,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:31:20,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:31:20,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:31:20,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:31:20,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:31:20,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:31:20,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:31:20,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:31:20,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:31:20,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:31:20,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:31:20,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:31:20,439 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:31:20,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22.c [2020-10-13 09:31:20,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e789f6d/4bc9e4325a894e44aa1319341f7a496f/FLAG603968e7d [2020-10-13 09:31:21,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:31:21,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label22.c [2020-10-13 09:31:21,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e789f6d/4bc9e4325a894e44aa1319341f7a496f/FLAG603968e7d [2020-10-13 09:31:21,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e789f6d/4bc9e4325a894e44aa1319341f7a496f [2020-10-13 09:31:21,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:31:21,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:31:21,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:31:21,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:31:21,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:31:21,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:31:21" (1/1) ... [2020-10-13 09:31:21,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c7bf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:21, skipping insertion in model container [2020-10-13 09:31:21,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:31:21" (1/1) ... [2020-10-13 09:31:21,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:31:21,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:31:22,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:31:22,712 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:31:23,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:31:23,097 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:31:23,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23 WrapperNode [2020-10-13 09:31:23,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:31:23,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:31:23,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:31:23,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:31:23,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (1/1) ... [2020-10-13 09:31:23,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (1/1) ... [2020-10-13 09:31:23,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (1/1) ... [2020-10-13 09:31:23,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (1/1) ... [2020-10-13 09:31:23,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (1/1) ... [2020-10-13 09:31:23,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (1/1) ... [2020-10-13 09:31:23,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (1/1) ... [2020-10-13 09:31:23,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:31:23,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:31:23,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:31:23,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:31:23,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:31:23,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:31:23,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:31:23,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:31:23,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:31:23,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:31:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:31:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:31:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:31:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:31:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:31:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:31:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:31:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:31:30,426 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:31:30,427 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:31:30,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:31:30 BoogieIcfgContainer [2020-10-13 09:31:30,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:31:30,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:31:30,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:31:30,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:31:30,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:31:21" (1/3) ... [2020-10-13 09:31:30,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@952fc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:31:30, skipping insertion in model container [2020-10-13 09:31:30,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:23" (2/3) ... [2020-10-13 09:31:30,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@952fc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:31:30, skipping insertion in model container [2020-10-13 09:31:30,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:31:30" (3/3) ... [2020-10-13 09:31:30,465 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label22.c [2020-10-13 09:31:30,479 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:31:30,496 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:31:30,520 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:31:30,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:31:30,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:31:30,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:31:30,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:31:30,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:31:30,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:31:30,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:31:30,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:31:30,619 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:31:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 09:31:30,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:30,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:30,640 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:30,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:30,651 INFO L82 PathProgramCache]: Analyzing trace with hash -671652239, now seen corresponding path program 1 times [2020-10-13 09:31:30,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:30,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064713705] [2020-10-13 09:31:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:31,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:31,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 09:31:31,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:31,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-13 09:31:31,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:31:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:31:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:31:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:31:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:31,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:31,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:31,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:31:31,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:31:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:31,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064713705] [2020-10-13 09:31:31,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:31:31,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:31:31,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041334469] [2020-10-13 09:31:31,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:31:31,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:31,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:31:31,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:31:31,817 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:31:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:41,736 INFO L93 Difference]: Finished difference Result 1690 states and 3086 transitions. [2020-10-13 09:31:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:41,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-13 09:31:41,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:41,765 INFO L225 Difference]: With dead ends: 1690 [2020-10-13 09:31:41,766 INFO L226 Difference]: Without dead ends: 1010 [2020-10-13 09:31:41,778 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 09:31:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-13 09:31:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1003. [2020-10-13 09:31:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-13 09:31:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1499 transitions. [2020-10-13 09:31:41,899 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1499 transitions. Word has length 57 [2020-10-13 09:31:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:41,900 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1499 transitions. [2020-10-13 09:31:41,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:31:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1499 transitions. [2020-10-13 09:31:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 09:31:41,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:41,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:41,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:31:41,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:41,910 INFO L82 PathProgramCache]: Analyzing trace with hash 495106905, now seen corresponding path program 1 times [2020-10-13 09:31:41,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:41,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925356251] [2020-10-13 09:31:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:42,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:43,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:43,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 09:31:43,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:31:43,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-10-13 09:31:43,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:43,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:31:43,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:31:43,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:31:43,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:43,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:43,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:43,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:31:43,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:31:43,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:43,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:31:43,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:31:43,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:31:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:43,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925356251] [2020-10-13 09:31:43,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:43,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:31:43,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729816392] [2020-10-13 09:31:43,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:43,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:43,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:43,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:43,975 INFO L87 Difference]: Start difference. First operand 1003 states and 1499 transitions. Second operand 5 states. [2020-10-13 09:31:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:57,687 INFO L93 Difference]: Finished difference Result 2905 states and 4385 transitions. [2020-10-13 09:31:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:57,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 09:31:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:57,701 INFO L225 Difference]: With dead ends: 2905 [2020-10-13 09:31:57,702 INFO L226 Difference]: Without dead ends: 1908 [2020-10-13 09:31:57,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-13 09:31:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1898. [2020-10-13 09:31:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-10-13 09:31:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2587 transitions. [2020-10-13 09:31:57,769 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2587 transitions. Word has length 131 [2020-10-13 09:31:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:57,770 INFO L479 AbstractCegarLoop]: Abstraction has 1898 states and 2587 transitions. [2020-10-13 09:31:57,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:31:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2587 transitions. [2020-10-13 09:31:57,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 09:31:57,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:57,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:31:57,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:31:57,777 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:57,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:57,777 INFO L82 PathProgramCache]: Analyzing trace with hash -909179252, now seen corresponding path program 1 times [2020-10-13 09:31:57,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:57,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461919114] [2020-10-13 09:31:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:57,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:31:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:31:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1506 [2020-10-13 09:31:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:31:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:31:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:59,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:59,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:59,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:31:59,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:59,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:59,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:59,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:31:59,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:59,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:31:59,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:31:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:31:59,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:59,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461919114] [2020-10-13 09:31:59,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:31:59,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:31:59,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247644799] [2020-10-13 09:31:59,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:59,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:59,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:59,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:59,629 INFO L87 Difference]: Start difference. First operand 1898 states and 2587 transitions. Second operand 5 states. [2020-10-13 09:32:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:10,609 INFO L93 Difference]: Finished difference Result 4236 states and 6002 transitions. [2020-10-13 09:32:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:10,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 09:32:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:10,626 INFO L225 Difference]: With dead ends: 4236 [2020-10-13 09:32:10,626 INFO L226 Difference]: Without dead ends: 2344 [2020-10-13 09:32:10,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2020-10-13 09:32:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1898. [2020-10-13 09:32:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-10-13 09:32:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2585 transitions. [2020-10-13 09:32:10,687 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2585 transitions. Word has length 153 [2020-10-13 09:32:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:10,688 INFO L479 AbstractCegarLoop]: Abstraction has 1898 states and 2585 transitions. [2020-10-13 09:32:10,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2585 transitions. [2020-10-13 09:32:10,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 09:32:10,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:10,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:10,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:32:10,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:10,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1046205542, now seen corresponding path program 1 times [2020-10-13 09:32:10,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:10,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601331836] [2020-10-13 09:32:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:10,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:12,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:12,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:32:12,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:32:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1932 [2020-10-13 09:32:12,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-13 09:32:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:32:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:12,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:12,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:12,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:12,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:32:12,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:12,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:12,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:32:12,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:32:12,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 09:32:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:12,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601331836] [2020-10-13 09:32:12,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:12,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:12,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692391829] [2020-10-13 09:32:12,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:12,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:12,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:12,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:12,967 INFO L87 Difference]: Start difference. First operand 1898 states and 2585 transitions. Second operand 5 states. [2020-10-13 09:32:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:25,050 INFO L93 Difference]: Finished difference Result 5563 states and 7667 transitions. [2020-10-13 09:32:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:25,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 09:32:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:25,074 INFO L225 Difference]: With dead ends: 5563 [2020-10-13 09:32:25,074 INFO L226 Difference]: Without dead ends: 3671 [2020-10-13 09:32:25,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:25,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2020-10-13 09:32:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3663. [2020-10-13 09:32:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2020-10-13 09:32:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 5021 transitions. [2020-10-13 09:32:25,208 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 5021 transitions. Word has length 166 [2020-10-13 09:32:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:25,208 INFO L479 AbstractCegarLoop]: Abstraction has 3663 states and 5021 transitions. [2020-10-13 09:32:25,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 5021 transitions. [2020-10-13 09:32:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-13 09:32:25,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:25,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:25,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:32:25,215 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:25,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1618842632, now seen corresponding path program 1 times [2020-10-13 09:32:25,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:25,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049547778] [2020-10-13 09:32:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:26,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:26,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 09:32:26,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:32:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-10-13 09:32:26,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:32:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:32:26,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:27,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:27,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:32:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:27,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:27,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:27,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:32:27,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 09:32:27,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:32:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:27,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049547778] [2020-10-13 09:32:27,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:27,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:27,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828656276] [2020-10-13 09:32:27,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:27,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:27,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:27,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:27,583 INFO L87 Difference]: Start difference. First operand 3663 states and 5021 transitions. Second operand 5 states. [2020-10-13 09:32:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:38,184 INFO L93 Difference]: Finished difference Result 7354 states and 10107 transitions. [2020-10-13 09:32:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:38,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-13 09:32:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:38,207 INFO L225 Difference]: With dead ends: 7354 [2020-10-13 09:32:38,207 INFO L226 Difference]: Without dead ends: 3671 [2020-10-13 09:32:38,217 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 09:32:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2020-10-13 09:32:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3663. [2020-10-13 09:32:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2020-10-13 09:32:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 5013 transitions. [2020-10-13 09:32:38,313 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 5013 transitions. Word has length 198 [2020-10-13 09:32:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:38,313 INFO L479 AbstractCegarLoop]: Abstraction has 3663 states and 5013 transitions. [2020-10-13 09:32:38,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 5013 transitions. [2020-10-13 09:32:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 09:32:38,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:38,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:38,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:32:38,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:38,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1541052967, now seen corresponding path program 1 times [2020-10-13 09:32:38,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:38,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388728969] [2020-10-13 09:32:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:39,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:43,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:43,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 09:32:43,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:32:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:32:43,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 09:32:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:32:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:43,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:43,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:43,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:43,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:43,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:43,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:32:43,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:43,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:43,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:43,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:43,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:43,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:32:43,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:32:43,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:43,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:32:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:32:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:32:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:32:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:32:43,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388728969] [2020-10-13 09:32:43,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:43,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:43,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135245512] [2020-10-13 09:32:43,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:43,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:43,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:43,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:43,857 INFO L87 Difference]: Start difference. First operand 3663 states and 5013 transitions. Second operand 5 states. [2020-10-13 09:32:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:57,318 INFO L93 Difference]: Finished difference Result 7360 states and 10105 transitions. [2020-10-13 09:32:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:57,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-13 09:32:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:57,343 INFO L225 Difference]: With dead ends: 7360 [2020-10-13 09:32:57,344 INFO L226 Difference]: Without dead ends: 3671 [2020-10-13 09:32:57,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2020-10-13 09:32:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3663. [2020-10-13 09:32:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2020-10-13 09:32:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 5005 transitions. [2020-10-13 09:32:57,469 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 5005 transitions. Word has length 206 [2020-10-13 09:32:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:57,470 INFO L479 AbstractCegarLoop]: Abstraction has 3663 states and 5005 transitions. [2020-10-13 09:32:57,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 5005 transitions. [2020-10-13 09:32:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 09:32:57,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:57,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:57,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:32:57,475 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:57,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:57,475 INFO L82 PathProgramCache]: Analyzing trace with hash -408822356, now seen corresponding path program 1 times [2020-10-13 09:32:57,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:57,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405366336] [2020-10-13 09:32:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:57,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:02,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:02,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:33:02,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:33:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:33:02,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:33:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:33:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:33:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:02,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:02,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:02,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:02,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:02,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:02,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:02,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:02,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:02,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:33:02,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:33:02,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:33:02,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:33:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:03,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:33:03,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:03,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-13 09:33:03,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:33:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:33:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:33:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:04,004 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-13 09:33:04,279 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-13 09:33:04,572 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-13 09:33:04,731 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-13 09:33:05,124 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-13 09:33:05,420 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-13 09:33:05,703 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-13 09:33:05,879 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-13 09:33:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:33:06,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405366336] [2020-10-13 09:33:06,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:06,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 09:33:06,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101901646] [2020-10-13 09:33:06,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 09:33:06,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:06,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 09:33:06,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:33:06,522 INFO L87 Difference]: Start difference. First operand 3663 states and 5005 transitions. Second operand 22 states. [2020-10-13 09:33:06,771 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-13 09:33:06,975 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 09:33:07,167 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 09:33:07,346 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-13 09:33:07,513 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-13 09:33:07,756 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-13 09:33:07,997 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-13 09:33:08,252 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-13 09:33:08,477 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-13 09:33:08,722 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-13 09:33:08,907 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-13 09:33:09,136 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-13 09:33:09,329 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-13 09:33:09,541 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-13 09:33:09,695 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-13 09:33:10,247 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-13 09:33:10,418 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-13 09:33:10,685 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-13 09:33:10,873 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-13 09:33:11,089 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-13 09:33:11,369 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-13 09:33:11,769 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-13 09:33:12,223 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-13 09:33:12,530 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-13 09:33:12,927 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-13 09:33:13,158 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-13 09:33:13,497 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-13 09:33:13,788 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-13 09:33:14,187 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-13 09:33:14,404 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-13 09:33:18,452 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-13 09:33:19,184 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-13 09:33:27,467 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-13 09:33:28,749 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-10-13 09:33:37,019 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-13 09:33:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:38,160 INFO L93 Difference]: Finished difference Result 8274 states and 11429 transitions. [2020-10-13 09:33:38,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-13 09:33:38,164 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 223 [2020-10-13 09:33:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:38,185 INFO L225 Difference]: With dead ends: 8274 [2020-10-13 09:33:38,185 INFO L226 Difference]: Without dead ends: 4237 [2020-10-13 09:33:38,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1241, Invalid=3871, Unknown=0, NotChecked=0, Total=5112 [2020-10-13 09:33:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2020-10-13 09:33:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 3705. [2020-10-13 09:33:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3705 states. [2020-10-13 09:33:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 4778 transitions. [2020-10-13 09:33:38,307 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 4778 transitions. Word has length 223 [2020-10-13 09:33:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:38,307 INFO L479 AbstractCegarLoop]: Abstraction has 3705 states and 4778 transitions. [2020-10-13 09:33:38,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 09:33:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 4778 transitions. [2020-10-13 09:33:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-13 09:33:38,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:38,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:38,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:33:38,313 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:38,313 INFO L82 PathProgramCache]: Analyzing trace with hash -34628230, now seen corresponding path program 1 times [2020-10-13 09:33:38,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:38,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295621046] [2020-10-13 09:33:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:39,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:39,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:33:39,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:39,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-10-13 09:33:39,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 09:33:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:33:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:39,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:39,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:39,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:39,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:39,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:33:39,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:39,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:39,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:39,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:33:39,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:39,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:33:39,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:39,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:39,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:39,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:33:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:39,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:39,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:39,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:33:39,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:39,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:33:39,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:39,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:33:39,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:33:39,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295621046] [2020-10-13 09:33:39,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:39,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:39,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112453957] [2020-10-13 09:33:39,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:39,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:39,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:39,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:39,897 INFO L87 Difference]: Start difference. First operand 3705 states and 4778 transitions. Second operand 5 states. [2020-10-13 09:33:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:56,674 INFO L93 Difference]: Finished difference Result 9188 states and 12250 transitions. [2020-10-13 09:33:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:56,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-13 09:33:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:56,703 INFO L225 Difference]: With dead ends: 9188 [2020-10-13 09:33:56,704 INFO L226 Difference]: Without dead ends: 5489 [2020-10-13 09:33:56,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2020-10-13 09:33:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 4612. [2020-10-13 09:33:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4612 states. [2020-10-13 09:33:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 5839 transitions. [2020-10-13 09:33:56,822 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 5839 transitions. Word has length 236 [2020-10-13 09:33:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:56,823 INFO L479 AbstractCegarLoop]: Abstraction has 4612 states and 5839 transitions. [2020-10-13 09:33:56,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 5839 transitions. [2020-10-13 09:33:56,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-13 09:33:56,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:56,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-10-13 09:33:56,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:33:56,829 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:56,830 INFO L82 PathProgramCache]: Analyzing trace with hash -143960770, now seen corresponding path program 1 times [2020-10-13 09:33:56,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:56,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948360656] [2020-10-13 09:33:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:01,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:01,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-13 09:34:01,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 09:34:01,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-10-13 09:34:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:34:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:02,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:02,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:02,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:34:02,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:02,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:34:02,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:34:02,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:02,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 09:34:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:02,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:34:02,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:34:02,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:34:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:34:02,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948360656] [2020-10-13 09:34:02,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:02,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:02,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791690115] [2020-10-13 09:34:02,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:02,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:02,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:02,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:02,307 INFO L87 Difference]: Start difference. First operand 4612 states and 5839 transitions. Second operand 5 states. [2020-10-13 09:34:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:19,819 INFO L93 Difference]: Finished difference Result 10560 states and 13862 transitions. [2020-10-13 09:34:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:19,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-13 09:34:19,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:19,846 INFO L225 Difference]: With dead ends: 10560 [2020-10-13 09:34:19,847 INFO L226 Difference]: Without dead ends: 5954 [2020-10-13 09:34:19,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5954 states. [2020-10-13 09:34:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5954 to 5511. [2020-10-13 09:34:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-13 09:34:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 6901 transitions. [2020-10-13 09:34:19,975 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 6901 transitions. Word has length 237 [2020-10-13 09:34:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:19,976 INFO L479 AbstractCegarLoop]: Abstraction has 5511 states and 6901 transitions. [2020-10-13 09:34:19,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 6901 transitions. [2020-10-13 09:34:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-13 09:34:19,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:19,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:19,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:34:19,982 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:19,983 INFO L82 PathProgramCache]: Analyzing trace with hash 208022459, now seen corresponding path program 1 times [2020-10-13 09:34:19,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:19,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997819760] [2020-10-13 09:34:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:21,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:21,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:34:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:34:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-10-13 09:34:21,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 09:34:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 09:34:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:21,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:21,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:21,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:34:21,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:21,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:21,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 09:34:21,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:34:21,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 09:34:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:21,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997819760] [2020-10-13 09:34:21,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:21,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:21,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929951748] [2020-10-13 09:34:21,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:21,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:21,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:21,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:21,884 INFO L87 Difference]: Start difference. First operand 5511 states and 6901 transitions. Second operand 5 states. [2020-10-13 09:34:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:37,595 INFO L93 Difference]: Finished difference Result 11052 states and 13898 transitions. [2020-10-13 09:34:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:37,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-13 09:34:37,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:37,622 INFO L225 Difference]: With dead ends: 11052 [2020-10-13 09:34:37,622 INFO L226 Difference]: Without dead ends: 5519 [2020-10-13 09:34:37,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2020-10-13 09:34:37,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5511. [2020-10-13 09:34:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-13 09:34:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 6893 transitions. [2020-10-13 09:34:37,733 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 6893 transitions. Word has length 238 [2020-10-13 09:34:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:37,734 INFO L479 AbstractCegarLoop]: Abstraction has 5511 states and 6893 transitions. [2020-10-13 09:34:37,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 6893 transitions. [2020-10-13 09:34:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-13 09:34:37,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:37,739 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:37,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:34:37,740 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:37,740 INFO L82 PathProgramCache]: Analyzing trace with hash -550046646, now seen corresponding path program 1 times [2020-10-13 09:34:37,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:37,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113203164] [2020-10-13 09:34:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:42,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:42,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:34:42,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:34:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4842 [2020-10-13 09:34:42,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 09:34:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:34:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:42,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:42,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:42,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:42,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:34:42,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:42,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:34:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:34:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:42,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 09:34:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:42,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:42,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 09:34:42,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:34:42,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:34:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 09:34:43,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113203164] [2020-10-13 09:34:43,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:43,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:43,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459951028] [2020-10-13 09:34:43,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:43,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:43,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:43,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:43,060 INFO L87 Difference]: Start difference. First operand 5511 states and 6893 transitions. Second operand 5 states. [2020-10-13 09:34:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:53,679 INFO L93 Difference]: Finished difference Result 11047 states and 13871 transitions. [2020-10-13 09:34:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:53,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-13 09:34:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:53,705 INFO L225 Difference]: With dead ends: 11047 [2020-10-13 09:34:53,705 INFO L226 Difference]: Without dead ends: 5519 [2020-10-13 09:34:53,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2020-10-13 09:34:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5511. [2020-10-13 09:34:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-13 09:34:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 6889 transitions. [2020-10-13 09:34:53,808 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 6889 transitions. Word has length 243 [2020-10-13 09:34:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:53,808 INFO L479 AbstractCegarLoop]: Abstraction has 5511 states and 6889 transitions. [2020-10-13 09:34:53,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 6889 transitions. [2020-10-13 09:34:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-13 09:34:53,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:53,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:53,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:34:53,815 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:53,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2055082277, now seen corresponding path program 1 times [2020-10-13 09:34:53,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:53,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565678288] [2020-10-13 09:34:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:55,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:57,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:57,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-13 09:34:57,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3172 [2020-10-13 09:34:57,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 209 [2020-10-13 09:34:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:34:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:57,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:57,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:57,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:34:57,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:57,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:57,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:57,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:34:57,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:57,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:34:57,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:57,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 09:34:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:57,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:57,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:34:57,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:34:57,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:34:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:34:57,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565678288] [2020-10-13 09:34:57,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:57,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:57,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906008063] [2020-10-13 09:34:57,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:57,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:57,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:57,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:57,425 INFO L87 Difference]: Start difference. First operand 5511 states and 6889 transitions. Second operand 5 states. [2020-10-13 09:35:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:09,674 INFO L93 Difference]: Finished difference Result 11048 states and 13862 transitions. [2020-10-13 09:35:09,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:09,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-13 09:35:09,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:09,692 INFO L225 Difference]: With dead ends: 11048 [2020-10-13 09:35:09,692 INFO L226 Difference]: Without dead ends: 5519 [2020-10-13 09:35:09,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2020-10-13 09:35:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5511. [2020-10-13 09:35:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-13 09:35:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 6887 transitions. [2020-10-13 09:35:09,807 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 6887 transitions. Word has length 254 [2020-10-13 09:35:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:09,808 INFO L479 AbstractCegarLoop]: Abstraction has 5511 states and 6887 transitions. [2020-10-13 09:35:09,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 6887 transitions. [2020-10-13 09:35:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-13 09:35:09,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:09,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:09,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:35:09,815 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:09,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:09,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1162069363, now seen corresponding path program 1 times [2020-10-13 09:35:09,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:09,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429127504] [2020-10-13 09:35:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:09,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:14,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:14,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:35:14,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:35:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4947 [2020-10-13 09:35:14,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:35:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-10-13 09:35:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 09:35:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:14,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:14,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:14,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:14,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:14,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:35:14,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:15,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:15,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:35:15,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:35:15,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:15,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 09:35:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:15,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:35:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:35:15,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:35:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:35:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:35:15,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429127504] [2020-10-13 09:35:15,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:15,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:35:15,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761996562] [2020-10-13 09:35:15,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:35:15,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:15,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:35:15,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:15,237 INFO L87 Difference]: Start difference. First operand 5511 states and 6887 transitions. Second operand 6 states.