/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/Problem13_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:34:29,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:34:29,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:34:29,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:34:29,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:34:29,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:34:29,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:34:29,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:34:29,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:34:29,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:34:29,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:34:29,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:34:29,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:34:29,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:34:29,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:34:29,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:34:29,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:34:29,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:34:29,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:34:29,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:34:29,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:34:29,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:34:29,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:34:29,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:34:29,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:34:29,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:34:29,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:34:29,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:34:29,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:34:29,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:34:29,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:34:29,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:34:29,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:34:29,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:34:29,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:34:29,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:34:29,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:34:29,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:34:29,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:34:29,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:34:29,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:34:29,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:34:29,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:34:29,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:34:29,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:34:29,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:34:29,468 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:34:29,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:34:29,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:34:29,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:34:29,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:34:29,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:34:29,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:34:29,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:34:29,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:34:29,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:34:29,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:34:29,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:34:29,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:34:29,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:34:29,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:34:29,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:34:29,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:34:29,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:34:29,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:34:29,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:34:29,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:34:29,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:34:29,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:34:29,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:34:29,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:34:29,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:34:29,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:34:29,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:34:29,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:34:29,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:34:29,823 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:34:29,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2020-10-13 08:34:29,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0526417f8/d1f9c8cc1829426190cdc9556414d980/FLAG1b49c2046 [2020-10-13 08:34:30,647 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:34:30,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2020-10-13 08:34:30,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0526417f8/d1f9c8cc1829426190cdc9556414d980/FLAG1b49c2046 [2020-10-13 08:34:31,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0526417f8/d1f9c8cc1829426190cdc9556414d980 [2020-10-13 08:34:31,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:34:31,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:34:31,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:34:31,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:34:31,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:34:31,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:34:31" (1/1) ... [2020-10-13 08:34:31,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:31, skipping insertion in model container [2020-10-13 08:34:31,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:34:31" (1/1) ... [2020-10-13 08:34:31,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:34:31,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:34:33,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:34:33,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:34:34,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:34:34,108 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:34:34,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34 WrapperNode [2020-10-13 08:34:34,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:34:34,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:34:34,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:34:34,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:34:34,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (1/1) ... [2020-10-13 08:34:34,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (1/1) ... [2020-10-13 08:34:34,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (1/1) ... [2020-10-13 08:34:34,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (1/1) ... [2020-10-13 08:34:34,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (1/1) ... [2020-10-13 08:34:34,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (1/1) ... [2020-10-13 08:34:34,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (1/1) ... [2020-10-13 08:34:34,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:34:34,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:34:34,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:34:34,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:34:34,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:34:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:34:34,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:34:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:34:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:34:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:34:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:34:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:34:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:34:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:34:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:34:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:34:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:34:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:34:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:34:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:34:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:34:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:34:47,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:34:47,531 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:34:47,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:34:47 BoogieIcfgContainer [2020-10-13 08:34:47,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:34:47,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:34:47,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:34:47,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:34:47,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:34:31" (1/3) ... [2020-10-13 08:34:47,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abbff83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:34:47, skipping insertion in model container [2020-10-13 08:34:47,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:34" (2/3) ... [2020-10-13 08:34:47,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abbff83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:34:47, skipping insertion in model container [2020-10-13 08:34:47,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:34:47" (3/3) ... [2020-10-13 08:34:47,560 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2020-10-13 08:34:47,572 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:34:47,586 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:34:47,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:34:47,635 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:34:47,635 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:34:47,636 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:34:47,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:34:47,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:34:47,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:34:47,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:34:47,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:34:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:34:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 08:34:47,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:47,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:34:47,690 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1437185016, now seen corresponding path program 1 times [2020-10-13 08:34:47,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:47,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676016789] [2020-10-13 08:34:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:47,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:48,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:48,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 08:34:48,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-13 08:34:48,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:34:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:34:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:34:48,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:34:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:48,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:48,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:34:48,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:34:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:34:48,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676016789] [2020-10-13 08:34:48,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:34:48,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:34:48,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046929581] [2020-10-13 08:34:48,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:34:48,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:48,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:34:48,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:34:48,444 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:35:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:05,354 INFO L93 Difference]: Finished difference Result 3242 states and 5947 transitions. [2020-10-13 08:35:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:05,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 08:35:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:05,391 INFO L225 Difference]: With dead ends: 3242 [2020-10-13 08:35:05,391 INFO L226 Difference]: Without dead ends: 2044 [2020-10-13 08:35:05,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-10-13 08:35:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1987. [2020-10-13 08:35:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-10-13 08:35:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 3532 transitions. [2020-10-13 08:35:05,560 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 3532 transitions. Word has length 19 [2020-10-13 08:35:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:05,561 INFO L479 AbstractCegarLoop]: Abstraction has 1987 states and 3532 transitions. [2020-10-13 08:35:05,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:35:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 3532 transitions. [2020-10-13 08:35:05,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 08:35:05,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:05,568 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:35:05,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:35:05,569 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:05,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:05,570 INFO L82 PathProgramCache]: Analyzing trace with hash 173051777, now seen corresponding path program 1 times [2020-10-13 08:35:05,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:05,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745361951] [2020-10-13 08:35:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:06,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:06,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 08:35:06,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:35:06,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-13 08:35:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:35:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:35:06,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:35:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:35:06,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:35:06,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:06,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:06,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:35:06,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:35:06,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:35:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 08:35:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:06,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745361951] [2020-10-13 08:35:06,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:06,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:06,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42013146] [2020-10-13 08:35:06,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:06,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:06,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:06,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:06,730 INFO L87 Difference]: Start difference. First operand 1987 states and 3532 transitions. Second operand 5 states. [2020-10-13 08:35:22,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:22,695 INFO L93 Difference]: Finished difference Result 4861 states and 8772 transitions. [2020-10-13 08:35:22,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:22,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-13 08:35:22,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:22,711 INFO L225 Difference]: With dead ends: 4861 [2020-10-13 08:35:22,712 INFO L226 Difference]: Without dead ends: 2880 [2020-10-13 08:35:22,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:35:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-10-13 08:35:22,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2821. [2020-10-13 08:35:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2020-10-13 08:35:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 5054 transitions. [2020-10-13 08:35:22,796 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 5054 transitions. Word has length 88 [2020-10-13 08:35:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:22,797 INFO L479 AbstractCegarLoop]: Abstraction has 2821 states and 5054 transitions. [2020-10-13 08:35:22,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 5054 transitions. [2020-10-13 08:35:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 08:35:22,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:22,801 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:35:22,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:35:22,802 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:22,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1541855700, now seen corresponding path program 1 times [2020-10-13 08:35:22,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:22,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893023803] [2020-10-13 08:35:22,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:23,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:23,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:35:23,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:35:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-13 08:35:23,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:35:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:35:23,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:23,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:23,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:23,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:23,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:35:23,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:23,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:23,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:23,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:23,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:35:23,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 08:35:23,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:35:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:23,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893023803] [2020-10-13 08:35:23,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:23,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:23,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367439775] [2020-10-13 08:35:23,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:23,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:23,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:23,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:23,946 INFO L87 Difference]: Start difference. First operand 2821 states and 5054 transitions. Second operand 5 states. [2020-10-13 08:35:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:38,318 INFO L93 Difference]: Finished difference Result 8108 states and 14814 transitions. [2020-10-13 08:35:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:38,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-13 08:35:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:38,348 INFO L225 Difference]: With dead ends: 8108 [2020-10-13 08:35:38,348 INFO L226 Difference]: Without dead ends: 5293 [2020-10-13 08:35:38,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:35:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2020-10-13 08:35:38,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 5281. [2020-10-13 08:35:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5281 states. [2020-10-13 08:35:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 8593 transitions. [2020-10-13 08:35:38,525 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 8593 transitions. Word has length 91 [2020-10-13 08:35:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:38,526 INFO L479 AbstractCegarLoop]: Abstraction has 5281 states and 8593 transitions. [2020-10-13 08:35:38,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 8593 transitions. [2020-10-13 08:35:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 08:35:38,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:38,536 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:35:38,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:35:38,536 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:38,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1135085951, now seen corresponding path program 1 times [2020-10-13 08:35:38,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:38,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210658207] [2020-10-13 08:35:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:38,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:38,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:39,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:39,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:35:39,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:35:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-13 08:35:39,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 08:35:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:35:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:39,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:39,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:35:39,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:39,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:39,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:39,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:35:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:35:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:35:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:39,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210658207] [2020-10-13 08:35:39,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:39,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:39,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447738494] [2020-10-13 08:35:39,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:39,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:39,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:39,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:39,855 INFO L87 Difference]: Start difference. First operand 5281 states and 8593 transitions. Second operand 5 states. [2020-10-13 08:35:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:57,460 INFO L93 Difference]: Finished difference Result 15450 states and 25755 transitions. [2020-10-13 08:35:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:57,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 08:35:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:57,510 INFO L225 Difference]: With dead ends: 15450 [2020-10-13 08:35:57,510 INFO L226 Difference]: Without dead ends: 10175 [2020-10-13 08:35:57,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:35:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10175 states. [2020-10-13 08:35:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10175 to 10165. [2020-10-13 08:35:57,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10165 states. [2020-10-13 08:35:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10165 states to 10165 states and 15570 transitions. [2020-10-13 08:35:57,781 INFO L78 Accepts]: Start accepts. Automaton has 10165 states and 15570 transitions. Word has length 104 [2020-10-13 08:35:57,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:57,782 INFO L479 AbstractCegarLoop]: Abstraction has 10165 states and 15570 transitions. [2020-10-13 08:35:57,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 10165 states and 15570 transitions. [2020-10-13 08:35:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 08:35:57,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:57,791 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:35:57,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:35:57,791 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash -808157789, now seen corresponding path program 1 times [2020-10-13 08:35:57,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:57,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582405497] [2020-10-13 08:35:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:58,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:58,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:35:58,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:35:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1164 [2020-10-13 08:35:58,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:35:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:35:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:59,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:59,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:59,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:35:59,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:59,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:59,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:59,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:35:59,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 08:35:59,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:35:59,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:59,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582405497] [2020-10-13 08:35:59,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:59,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:35:59,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491426964] [2020-10-13 08:35:59,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:35:59,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:35:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:35:59,335 INFO L87 Difference]: Start difference. First operand 10165 states and 15570 transitions. Second operand 6 states. [2020-10-13 08:36:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:19,682 INFO L93 Difference]: Finished difference Result 39078 states and 63056 transitions. [2020-10-13 08:36:19,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:36:19,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-13 08:36:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:20,643 INFO L225 Difference]: With dead ends: 39078 [2020-10-13 08:36:20,643 INFO L226 Difference]: Without dead ends: 28919 [2020-10-13 08:36:20,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:36:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28919 states. [2020-10-13 08:36:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28919 to 28882. [2020-10-13 08:36:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28882 states. [2020-10-13 08:36:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28882 states to 28882 states and 42380 transitions. [2020-10-13 08:36:21,249 INFO L78 Accepts]: Start accepts. Automaton has 28882 states and 42380 transitions. Word has length 138 [2020-10-13 08:36:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:21,250 INFO L479 AbstractCegarLoop]: Abstraction has 28882 states and 42380 transitions. [2020-10-13 08:36:21,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:36:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 28882 states and 42380 transitions. [2020-10-13 08:36:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 08:36:21,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:21,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:36:21,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:36:21,263 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:21,264 INFO L82 PathProgramCache]: Analyzing trace with hash 334559531, now seen corresponding path program 1 times [2020-10-13 08:36:21,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:21,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262095000] [2020-10-13 08:36:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:24,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:24,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 08:36:24,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:36:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3499 [2020-10-13 08:36:24,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-10-13 08:36:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:36:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:24,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:24,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:24,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:24,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:24,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:36:24,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:24,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:24,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:36:24,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:36:24,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:36:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:25,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:25,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:36:25,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-13 08:36:25,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:36:25,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:36:25,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262095000] [2020-10-13 08:36:25,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:25,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:25,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084966081] [2020-10-13 08:36:25,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:25,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:25,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:25,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:25,368 INFO L87 Difference]: Start difference. First operand 28882 states and 42380 transitions. Second operand 5 states. [2020-10-13 08:36:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:47,022 INFO L93 Difference]: Finished difference Result 84557 states and 130298 transitions. [2020-10-13 08:36:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:47,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-13 08:36:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:47,305 INFO L225 Difference]: With dead ends: 84557 [2020-10-13 08:36:47,305 INFO L226 Difference]: Without dead ends: 55681 [2020-10-13 08:36:47,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:36:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55681 states. [2020-10-13 08:36:48,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55681 to 55675. [2020-10-13 08:36:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55675 states. [2020-10-13 08:36:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55675 states to 55675 states and 83504 transitions. [2020-10-13 08:36:48,816 INFO L78 Accepts]: Start accepts. Automaton has 55675 states and 83504 transitions. Word has length 249 [2020-10-13 08:36:48,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:48,817 INFO L479 AbstractCegarLoop]: Abstraction has 55675 states and 83504 transitions. [2020-10-13 08:36:48,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:48,817 INFO L276 IsEmpty]: Start isEmpty. Operand 55675 states and 83504 transitions. [2020-10-13 08:36:48,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-13 08:36:48,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:48,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-13 08:36:48,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:36:48,868 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:48,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:48,868 INFO L82 PathProgramCache]: Analyzing trace with hash 186604000, now seen corresponding path program 1 times [2020-10-13 08:36:48,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:48,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326935561] [2020-10-13 08:36:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:49,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:49,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:52,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:53,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:53,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-13 08:36:53,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:36:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 08:36:53,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-13 08:36:53,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:36:53,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:54,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:54,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:36:54,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:54,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:54,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:54,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:36:54,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 08:36:54,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:36:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:36:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:54,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:54,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:54,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:36:54,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:54,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-13 08:36:54,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:36:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:54,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 08:36:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:55,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:55,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 08:36:55,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-13 08:36:55,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:55,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:36:55,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-13 08:36:55,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 08:36:55,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326935561] [2020-10-13 08:36:55,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:55,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:36:55,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277704529] [2020-10-13 08:36:55,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:36:55,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:55,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:36:55,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:36:55,567 INFO L87 Difference]: Start difference. First operand 55675 states and 83504 transitions. Second operand 7 states. [2020-10-13 08:37:26,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:26,044 INFO L93 Difference]: Finished difference Result 118202 states and 192546 transitions. [2020-10-13 08:37:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:37:26,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-13 08:37:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:26,483 INFO L225 Difference]: With dead ends: 118202 [2020-10-13 08:37:26,483 INFO L226 Difference]: Without dead ends: 61699 [2020-10-13 08:37:26,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:37:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61699 states. [2020-10-13 08:37:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61699 to 61567. [2020-10-13 08:37:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61567 states. [2020-10-13 08:37:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61567 states to 61567 states and 101361 transitions. [2020-10-13 08:37:29,085 INFO L78 Accepts]: Start accepts. Automaton has 61567 states and 101361 transitions. Word has length 398 [2020-10-13 08:37:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:29,086 INFO L479 AbstractCegarLoop]: Abstraction has 61567 states and 101361 transitions. [2020-10-13 08:37:29,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:37:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 61567 states and 101361 transitions. [2020-10-13 08:37:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-13 08:37:29,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:29,160 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:37:29,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:37:29,160 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:29,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1333056423, now seen corresponding path program 1 times [2020-10-13 08:37:29,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:29,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804922850] [2020-10-13 08:37:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:29,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:31,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:33,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:34,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-13 08:37:34,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:37:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 08:37:34,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 264 [2020-10-13 08:37:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:37:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:37:34,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:34,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:34,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:37:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:34,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:34,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:37:34,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:37:34,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:34,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:37:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:34,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:34,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:34,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 08:37:34,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 08:37:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:37:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:37:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-13 08:37:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:34,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:34,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 08:37:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 08:37:34,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-13 08:37:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2020-10-13 08:37:35,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804922850] [2020-10-13 08:37:35,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:35,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:35,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114943325] [2020-10-13 08:37:35,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:35,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:35,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:35,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:35,078 INFO L87 Difference]: Start difference. First operand 61567 states and 101361 transitions. Second operand 5 states. [2020-10-13 08:37:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:53,970 INFO L93 Difference]: Finished difference Result 123015 states and 200915 transitions. [2020-10-13 08:37:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:53,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2020-10-13 08:37:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:54,271 INFO L225 Difference]: With dead ends: 123015 [2020-10-13 08:37:54,272 INFO L226 Difference]: Without dead ends: 61558 [2020-10-13 08:37:54,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:37:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61558 states. [2020-10-13 08:37:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61558 to 61553. [2020-10-13 08:37:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61553 states. [2020-10-13 08:37:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61553 states to 61553 states and 101271 transitions. [2020-10-13 08:37:57,928 INFO L78 Accepts]: Start accepts. Automaton has 61553 states and 101271 transitions. Word has length 457 [2020-10-13 08:37:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:57,928 INFO L479 AbstractCegarLoop]: Abstraction has 61553 states and 101271 transitions. [2020-10-13 08:37:57,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 61553 states and 101271 transitions. [2020-10-13 08:37:57,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-13 08:37:57,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:57,989 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:37:57,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:37:57,990 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:57,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash 544898140, now seen corresponding path program 1 times [2020-10-13 08:37:57,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:57,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067706986] [2020-10-13 08:37:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:58,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:58,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:02,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:03,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:03,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-13 08:38:03,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:38:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 08:38:03,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 455 [2020-10-13 08:38:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:38:03,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:03,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:03,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:03,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:03,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:38:03,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:03,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:03,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:03,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:03,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 08:38:03,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:03,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:38:03,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:03,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 08:38:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:03,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:03,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 08:38:03,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:38:03,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 08:38:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:03,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:03,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 08:38:03,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-13 08:38:03,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-13 08:38:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2020-10-13 08:38:03,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067706986] [2020-10-13 08:38:03,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:03,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:03,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758631706] [2020-10-13 08:38:03,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:03,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:03,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:03,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:03,887 INFO L87 Difference]: Start difference. First operand 61553 states and 101271 transitions. Second operand 5 states.