/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem15_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:04:34,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:04:34,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:04:34,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:04:34,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:04:34,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:04:34,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:04:34,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:04:34,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:04:34,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:04:34,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:04:34,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:04:34,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:04:34,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:04:34,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:04:34,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:04:34,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:04:34,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:04:34,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:04:34,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:04:34,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:04:34,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:04:34,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:04:34,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:04:34,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:04:34,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:04:34,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:04:34,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:04:34,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:04:34,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:04:34,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:04:34,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:04:34,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:04:34,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:04:34,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:04:34,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:04:34,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:04:34,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:04:34,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:04:34,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:04:34,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:04:34,902 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 [2020-10-14 22:04:34,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:04:34,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:04:34,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:04:34,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:04:34,927 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:04:34,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:04:34,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:04:34,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:04:34,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:04:34,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:04:34,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:04:34,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:04:34,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:04:34,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:04:34,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:04:34,929 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:04:34,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:04:34,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:04:34,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:04:34,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:04:34,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:04:34,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:04:34,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:04:34,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:04:34,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:04:34,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:04:34,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:04:34,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:04:34,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:04:34,931 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:04:35,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:04:35,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:04:35,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:04:35,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:04:35,275 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:04:35,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47.c [2020-10-14 22:04:35,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/547263b7e/26aeee26cda649289a92f26f44cde66b/FLAG34553ec1d [2020-10-14 22:04:36,054 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:04:36,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label47.c [2020-10-14 22:04:36,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/547263b7e/26aeee26cda649289a92f26f44cde66b/FLAG34553ec1d [2020-10-14 22:04:36,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/547263b7e/26aeee26cda649289a92f26f44cde66b [2020-10-14 22:04:36,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:04:36,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:04:36,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:04:36,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:04:36,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:04:36,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:36" (1/1) ... [2020-10-14 22:04:36,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dbf34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:36, skipping insertion in model container [2020-10-14 22:04:36,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:36" (1/1) ... [2020-10-14 22:04:36,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:04:36,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:04:37,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:04:37,328 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:04:37,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:04:37,715 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:04:37,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37 WrapperNode [2020-10-14 22:04:37,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:04:37,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:04:37,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:04:37,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:04:37,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ... [2020-10-14 22:04:37,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ... [2020-10-14 22:04:37,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ... [2020-10-14 22:04:37,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ... [2020-10-14 22:04:37,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ... [2020-10-14 22:04:37,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ... [2020-10-14 22:04:37,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ... [2020-10-14 22:04:37,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:04:37,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:04:37,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:04:37,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:04:37,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (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 [2020-10-14 22:04:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:04:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:04:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:04:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:04:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:04:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:04:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:04:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:04:37,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:04:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:04:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:04:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:04:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:04:43,809 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:04:43,810 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:04:43,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:43 BoogieIcfgContainer [2020-10-14 22:04:43,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:04:43,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:04:43,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:04:43,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:04:43,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:36" (1/3) ... [2020-10-14 22:04:43,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61de5f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:43, skipping insertion in model container [2020-10-14 22:04:43,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (2/3) ... [2020-10-14 22:04:43,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61de5f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:43, skipping insertion in model container [2020-10-14 22:04:43,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:43" (3/3) ... [2020-10-14 22:04:43,834 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label47.c [2020-10-14 22:04:43,846 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:04:43,859 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:04:43,872 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:04:43,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:04:43,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:04:43,904 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:04:43,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:04:43,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:04:43,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:04:43,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:04:43,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:04:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:04:43,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 22:04:43,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:43,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:43,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:43,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1707794149, now seen corresponding path program 1 times [2020-10-14 22:04:43,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:43,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891255978] [2020-10-14 22:04:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:44,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:44,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 22:04:44,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 22:04:44,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:44,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 22:04:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-14 22:04:44,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:44,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:44,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:44,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:44,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:04:44,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:44,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:04:44,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891255978] [2020-10-14 22:04:44,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:04:44,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:04:44,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667008284] [2020-10-14 22:04:44,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:04:44,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:44,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:04:44,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:04:44,673 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 22:04:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:50,871 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 22:04:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:04:50,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 22:04:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:50,902 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 22:04:50,902 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 22:04:50,911 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 [2020-10-14 22:04:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 22:04:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 22:04:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 22:04:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 22:04:51,021 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 15 [2020-10-14 22:04:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:51,022 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 22:04:51,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:04:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 22:04:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 22:04:51,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:51,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:51,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:04:51,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash -581258366, now seen corresponding path program 1 times [2020-10-14 22:04:51,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:51,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804573859] [2020-10-14 22:04:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 22:04:52,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:04:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-14 22:04:52,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:52,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:52,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:04:52,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:04:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:52,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:04:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:52,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:53,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:04:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 22:04:53,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:53,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:04:53,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 22:04:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:04:53,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804573859] [2020-10-14 22:04:53,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:04:53,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:04:53,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259297980] [2020-10-14 22:04:53,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:53,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:53,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:53,170 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-14 22:05:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:00,501 INFO L93 Difference]: Finished difference Result 1710 states and 2417 transitions. [2020-10-14 22:05:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:05:00,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-10-14 22:05:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:00,508 INFO L225 Difference]: With dead ends: 1710 [2020-10-14 22:05:00,508 INFO L226 Difference]: Without dead ends: 1025 [2020-10-14 22:05:00,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:05:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-14 22:05:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1014. [2020-10-14 22:05:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-10-14 22:05:00,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1367 transitions. [2020-10-14 22:05:00,565 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1367 transitions. Word has length 84 [2020-10-14 22:05:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:00,565 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 1367 transitions. [2020-10-14 22:05:00,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1367 transitions. [2020-10-14 22:05:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 22:05:00,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:00,569 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:00,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:05:00,569 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:00,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:00,570 INFO L82 PathProgramCache]: Analyzing trace with hash 352264813, now seen corresponding path program 1 times [2020-10-14 22:05:00,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:00,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485997896] [2020-10-14 22:05:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:00,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:01,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:01,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 22:05:01,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:01,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-14 22:05:01,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:01,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:01,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:05:01,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:01,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:05:01,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:01,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:01,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:01,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:05:01,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:01,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:01,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:01,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:05:01,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:05:01,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:01,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:05:01,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:05:01,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485997896] [2020-10-14 22:05:01,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:05:01,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:05:01,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551328139] [2020-10-14 22:05:01,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:05:01,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:01,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:05:01,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:05:01,659 INFO L87 Difference]: Start difference. First operand 1014 states and 1367 transitions. Second operand 8 states. [2020-10-14 22:05:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:12,701 INFO L93 Difference]: Finished difference Result 3019 states and 4374 transitions. [2020-10-14 22:05:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:05:12,706 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-14 22:05:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:12,730 INFO L225 Difference]: With dead ends: 3019 [2020-10-14 22:05:12,730 INFO L226 Difference]: Without dead ends: 2318 [2020-10-14 22:05:12,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:05:12,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-10-14 22:05:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1981. [2020-10-14 22:05:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-10-14 22:05:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2652 transitions. [2020-10-14 22:05:12,820 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2652 transitions. Word has length 89 [2020-10-14 22:05:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:12,823 INFO L479 AbstractCegarLoop]: Abstraction has 1981 states and 2652 transitions. [2020-10-14 22:05:12,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:05:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2652 transitions. [2020-10-14 22:05:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 22:05:12,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:12,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:12,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:05:12,844 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:12,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:12,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1513418889, now seen corresponding path program 1 times [2020-10-14 22:05:12,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:12,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895217962] [2020-10-14 22:05:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:13,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:14,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:15,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:17,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:17,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 22:05:17,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 22:05:17,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 22:05:17,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:17,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:05:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:05:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:18,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:18,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:18,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:18,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:05:18,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:18,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:18,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:18,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:05:18,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:18,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 22:05:18,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:18,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:05:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:05:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:18,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:05:18,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 22:05:18,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:18,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:05:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 22:05:18,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895217962] [2020-10-14 22:05:18,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:18,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:05:18,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100890580] [2020-10-14 22:05:18,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:18,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:18,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:18,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:18,723 INFO L87 Difference]: Start difference. First operand 1981 states and 2652 transitions. Second operand 7 states. [2020-10-14 22:05:28,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:28,332 INFO L93 Difference]: Finished difference Result 5915 states and 7993 transitions. [2020-10-14 22:05:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:05:28,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-14 22:05:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:28,357 INFO L225 Difference]: With dead ends: 5915 [2020-10-14 22:05:28,357 INFO L226 Difference]: Without dead ends: 3940 [2020-10-14 22:05:28,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:05:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2020-10-14 22:05:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3860. [2020-10-14 22:05:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3860 states. [2020-10-14 22:05:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 4786 transitions. [2020-10-14 22:05:28,471 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 4786 transitions. Word has length 233 [2020-10-14 22:05:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:28,472 INFO L479 AbstractCegarLoop]: Abstraction has 3860 states and 4786 transitions. [2020-10-14 22:05:28,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 4786 transitions. [2020-10-14 22:05:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 22:05:28,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:28,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:28,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:05:28,480 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash 264638278, now seen corresponding path program 1 times [2020-10-14 22:05:28,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:28,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167749900] [2020-10-14 22:05:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:28,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:33,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:33,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 22:05:33,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:05:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 22:05:33,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:33,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:05:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:05:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:33,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:33,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:33,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:33,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:05:33,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:33,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:33,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:34,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:34,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:05:34,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:34,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 22:05:34,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:34,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:05:34,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:05:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:34,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:34,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:05:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:05:34,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:34,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:05:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:05:34,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167749900] [2020-10-14 22:05:34,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:34,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:05:34,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383231327] [2020-10-14 22:05:34,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:34,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:34,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:34,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:34,696 INFO L87 Difference]: Start difference. First operand 3860 states and 4786 transitions. Second operand 7 states. [2020-10-14 22:05:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:43,679 INFO L93 Difference]: Finished difference Result 7479 states and 9360 transitions. [2020-10-14 22:05:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:05:43,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-14 22:05:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:43,709 INFO L225 Difference]: With dead ends: 7479 [2020-10-14 22:05:43,709 INFO L226 Difference]: Without dead ends: 3932 [2020-10-14 22:05:43,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:05:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2020-10-14 22:05:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3871. [2020-10-14 22:05:43,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3871 states. [2020-10-14 22:05:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 4791 transitions. [2020-10-14 22:05:43,835 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 4791 transitions. Word has length 301 [2020-10-14 22:05:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:43,837 INFO L479 AbstractCegarLoop]: Abstraction has 3871 states and 4791 transitions. [2020-10-14 22:05:43,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 4791 transitions. [2020-10-14 22:05:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 22:05:43,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:43,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:43,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:05:43,843 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:43,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1192857223, now seen corresponding path program 1 times [2020-10-14 22:05:43,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:43,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906219096] [2020-10-14 22:05:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:44,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:45,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:47,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:48,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:48,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 22:05:48,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:05:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4962 [2020-10-14 22:05:48,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:48,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:48,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:05:48,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:05:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-14 22:05:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:49,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:49,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:49,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:05:49,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:49,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:05:49,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:49,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:49,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:05:49,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 22:05:49,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:49,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:05:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:05:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:50,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:50,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:05:50,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:50,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-14 22:05:50,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:50,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:50,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:50,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:50,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 22:05:50,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 22:05:50,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906219096] [2020-10-14 22:05:50,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:50,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:05:50,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306284396] [2020-10-14 22:05:50,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:50,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:50,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:50,135 INFO L87 Difference]: Start difference. First operand 3871 states and 4791 transitions. Second operand 7 states. [2020-10-14 22:06:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:03,847 INFO L93 Difference]: Finished difference Result 8081 states and 10881 transitions. [2020-10-14 22:06:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:06:03,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-14 22:06:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:03,879 INFO L225 Difference]: With dead ends: 8081 [2020-10-14 22:06:03,879 INFO L226 Difference]: Without dead ends: 6089 [2020-10-14 22:06:03,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:06:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2020-10-14 22:06:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 5121. [2020-10-14 22:06:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5121 states. [2020-10-14 22:06:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 6504 transitions. [2020-10-14 22:06:04,048 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 6504 transitions. Word has length 310 [2020-10-14 22:06:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:04,050 INFO L479 AbstractCegarLoop]: Abstraction has 5121 states and 6504 transitions. [2020-10-14 22:06:04,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 6504 transitions. [2020-10-14 22:06:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-14 22:06:04,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:04,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:04,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:06:04,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:04,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1307265716, now seen corresponding path program 1 times [2020-10-14 22:06:04,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:04,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126965042] [2020-10-14 22:06:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:06,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:06,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-14 22:06:06,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:06,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2096 [2020-10-14 22:06:06,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:06,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:06:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:06:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:06,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:06,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:06,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:06,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:06,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:06,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:06:06,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 22:06:06,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:06,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:06:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:06,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:06:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:06,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:06,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:06:06,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:06,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:06:06,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:06,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:06:06,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:06:07,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126965042] [2020-10-14 22:06:07,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:07,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:07,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705928123] [2020-10-14 22:06:07,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:07,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:07,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:07,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:07,063 INFO L87 Difference]: Start difference. First operand 5121 states and 6504 transitions. Second operand 7 states. [2020-10-14 22:06:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:19,614 INFO L93 Difference]: Finished difference Result 11583 states and 14984 transitions. [2020-10-14 22:06:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:06:19,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-10-14 22:06:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:19,648 INFO L225 Difference]: With dead ends: 11583 [2020-10-14 22:06:19,649 INFO L226 Difference]: Without dead ends: 6775 [2020-10-14 22:06:19,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2020-10-14 22:06:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 6724. [2020-10-14 22:06:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6724 states. [2020-10-14 22:06:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 8338 transitions. [2020-10-14 22:06:19,830 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 8338 transitions. Word has length 385 [2020-10-14 22:06:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:19,832 INFO L479 AbstractCegarLoop]: Abstraction has 6724 states and 8338 transitions. [2020-10-14 22:06:19,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:19,832 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 8338 transitions. [2020-10-14 22:06:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-14 22:06:19,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:19,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:06:19,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:06:19,844 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:19,845 INFO L82 PathProgramCache]: Analyzing trace with hash 300973826, now seen corresponding path program 1 times [2020-10-14 22:06:19,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:19,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260144833] [2020-10-14 22:06:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:25,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:25,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-14 22:06:25,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:06:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 22:06:25,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:25,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:06:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:06:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:06:25,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:25,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:25,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:06:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:25,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:25,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:25,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:25,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:25,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:06:25,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 22:06:25,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:25,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:06:25,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:06:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:25,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:06:25,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 22:06:25,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:25,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:06:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:25,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:06:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:25,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:26,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:26,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:06:26,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:26,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 22:06:26,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:26,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:06:26,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 208 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-14 22:06:26,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260144833] [2020-10-14 22:06:26,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:26,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:26,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709310168] [2020-10-14 22:06:26,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:26,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:26,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:26,203 INFO L87 Difference]: Start difference. First operand 6724 states and 8338 transitions. Second operand 7 states. [2020-10-14 22:06:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:42,316 INFO L93 Difference]: Finished difference Result 13863 states and 17906 transitions. [2020-10-14 22:06:42,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:06:42,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 406 [2020-10-14 22:06:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:42,355 INFO L225 Difference]: With dead ends: 13863 [2020-10-14 22:06:42,355 INFO L226 Difference]: Without dead ends: 8068 [2020-10-14 22:06:42,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:42,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8068 states. [2020-10-14 22:06:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8068 to 8052. [2020-10-14 22:06:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8052 states. [2020-10-14 22:06:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8052 states to 8052 states and 9878 transitions. [2020-10-14 22:06:42,571 INFO L78 Accepts]: Start accepts. Automaton has 8052 states and 9878 transitions. Word has length 406 [2020-10-14 22:06:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:42,571 INFO L479 AbstractCegarLoop]: Abstraction has 8052 states and 9878 transitions. [2020-10-14 22:06:42,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 8052 states and 9878 transitions. [2020-10-14 22:06:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-14 22:06:42,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:42,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:42,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:06:42,585 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:42,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:42,586 INFO L82 PathProgramCache]: Analyzing trace with hash 48918406, now seen corresponding path program 1 times [2020-10-14 22:06:42,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:42,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255227419] [2020-10-14 22:06:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:47,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:47,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-14 22:06:47,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:06:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4788 [2020-10-14 22:06:47,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:47,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:06:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:06:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:47,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:47,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:47,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:47,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:47,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:06:47,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:47,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:47,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:47,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:06:47,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 22:06:47,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:47,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:06:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:47,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:06:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:48,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:48,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:48,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:48,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 22:06:48,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:48,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:06:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:06:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:48,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:48,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 22:06:48,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:48,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:06:48,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:48,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:48,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:48,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 22:06:48,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:48,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 136 proven. 92 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 22:06:48,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255227419] [2020-10-14 22:06:48,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:48,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:48,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331248218] [2020-10-14 22:06:48,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:48,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:48,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:48,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:48,536 INFO L87 Difference]: Start difference. First operand 8052 states and 9878 transitions. Second operand 7 states. [2020-10-14 22:07:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:01,101 INFO L93 Difference]: Finished difference Result 17435 states and 21431 transitions. [2020-10-14 22:07:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:07:01,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-14 22:07:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:01,142 INFO L225 Difference]: With dead ends: 17435 [2020-10-14 22:07:01,142 INFO L226 Difference]: Without dead ends: 9696 [2020-10-14 22:07:01,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:07:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9696 states. [2020-10-14 22:07:01,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9696 to 9634. [2020-10-14 22:07:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9634 states. [2020-10-14 22:07:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9634 states to 9634 states and 11596 transitions. [2020-10-14 22:07:01,386 INFO L78 Accepts]: Start accepts. Automaton has 9634 states and 11596 transitions. Word has length 493 [2020-10-14 22:07:01,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:01,387 INFO L479 AbstractCegarLoop]: Abstraction has 9634 states and 11596 transitions. [2020-10-14 22:07:01,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 9634 states and 11596 transitions. [2020-10-14 22:07:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-14 22:07:01,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:01,396 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:01,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:07:01,396 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:01,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1746273346, now seen corresponding path program 1 times [2020-10-14 22:07:01,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:01,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692408668] [2020-10-14 22:07:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:02,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:03,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-14 22:07:03,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:07:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2317 [2020-10-14 22:07:03,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:03,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:07:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:07:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:03,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:03,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:03,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:07:03,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:03,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:04,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:04,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:04,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:04,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:04,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:04,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:07:04,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:04,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:04,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:04,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:04,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:04,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:04,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:07:04,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:07:04,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:04,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:07:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:07:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:04,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 22:07:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 22:07:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:04,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 22:07:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:07:04,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692408668] [2020-10-14 22:07:04,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:04,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:07:04,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646729189] [2020-10-14 22:07:04,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:07:04,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:04,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:07:04,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:07:04,583 INFO L87 Difference]: Start difference. First operand 9634 states and 11596 transitions. Second operand 7 states. [2020-10-14 22:07:17,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:17,291 INFO L93 Difference]: Finished difference Result 19629 states and 23695 transitions. [2020-10-14 22:07:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:07:17,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 505 [2020-10-14 22:07:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:17,333 INFO L225 Difference]: With dead ends: 19629 [2020-10-14 22:07:17,333 INFO L226 Difference]: Without dead ends: 10308 [2020-10-14 22:07:17,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:07:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10308 states. [2020-10-14 22:07:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10308 to 9936. [2020-10-14 22:07:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9936 states. [2020-10-14 22:07:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9936 states to 9936 states and 11356 transitions. [2020-10-14 22:07:17,526 INFO L78 Accepts]: Start accepts. Automaton has 9936 states and 11356 transitions. Word has length 505 [2020-10-14 22:07:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:17,528 INFO L479 AbstractCegarLoop]: Abstraction has 9936 states and 11356 transitions. [2020-10-14 22:07:17,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9936 states and 11356 transitions. [2020-10-14 22:07:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-14 22:07:17,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:17,538 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:17,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:07:17,539 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:17,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:17,539 INFO L82 PathProgramCache]: Analyzing trace with hash -468724958, now seen corresponding path program 1 times [2020-10-14 22:07:17,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:17,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772014849] [2020-10-14 22:07:17,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:17,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:18,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:19,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:19,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-14 22:07:19,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:07:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2136 [2020-10-14 22:07:19,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:19,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:07:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:07:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:19,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:19,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:19,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:19,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:07:19,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:19,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:20,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:20,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:20,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:20,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 22:07:20,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:20,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:20,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:20,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:20,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:20,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:07:20,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:07:20,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:20,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:07:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:20,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:07:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:20,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:20,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:07:20,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:07:20,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:20,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:07:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:07:20,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772014849] [2020-10-14 22:07:20,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:20,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:07:20,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888244772] [2020-10-14 22:07:20,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:07:20,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:20,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:07:20,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:07:20,517 INFO L87 Difference]: Start difference. First operand 9936 states and 11356 transitions. Second operand 7 states. [2020-10-14 22:07:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:33,063 INFO L93 Difference]: Finished difference Result 19425 states and 23048 transitions. [2020-10-14 22:07:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:07:33,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 508 [2020-10-14 22:07:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:33,107 INFO L225 Difference]: With dead ends: 19425 [2020-10-14 22:07:33,107 INFO L226 Difference]: Without dead ends: 12914 [2020-10-14 22:07:33,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:07:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12914 states. [2020-10-14 22:07:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12914 to 12564. [2020-10-14 22:07:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12564 states. [2020-10-14 22:07:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12564 states to 12564 states and 14589 transitions. [2020-10-14 22:07:33,327 INFO L78 Accepts]: Start accepts. Automaton has 12564 states and 14589 transitions. Word has length 508 [2020-10-14 22:07:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:33,328 INFO L479 AbstractCegarLoop]: Abstraction has 12564 states and 14589 transitions. [2020-10-14 22:07:33,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 12564 states and 14589 transitions. [2020-10-14 22:07:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-14 22:07:33,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:33,337 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:33,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:07:33,337 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:33,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:33,338 INFO L82 PathProgramCache]: Analyzing trace with hash 847110166, now seen corresponding path program 1 times [2020-10-14 22:07:33,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:33,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123633461] [2020-10-14 22:07:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:34,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:07:34,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-14 22:07:34,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:34,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:07:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 22:07:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:34,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:34,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:07:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:34,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:34,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:34,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:07:34,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:34,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:34,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:34,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:07:34,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:07:34,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:34,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:07:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:34,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:07:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:34,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:07:34,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 22:07:34,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:34,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:07:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:07:34,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123633461] [2020-10-14 22:07:34,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:34,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:07:34,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051402226] [2020-10-14 22:07:34,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:07:34,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:34,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:07:34,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:07:34,889 INFO L87 Difference]: Start difference. First operand 12564 states and 14589 transitions. Second operand 7 states. [2020-10-14 22:07:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:43,283 INFO L93 Difference]: Finished difference Result 24607 states and 28714 transitions. [2020-10-14 22:07:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:07:43,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-14 22:07:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:43,322 INFO L225 Difference]: With dead ends: 24607 [2020-10-14 22:07:43,323 INFO L226 Difference]: Without dead ends: 12667 [2020-10-14 22:07:43,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:07:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12667 states. [2020-10-14 22:07:43,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12667 to 12566. [2020-10-14 22:07:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12566 states. [2020-10-14 22:07:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12566 states to 12566 states and 14009 transitions. [2020-10-14 22:07:43,550 INFO L78 Accepts]: Start accepts. Automaton has 12566 states and 14009 transitions. Word has length 518 [2020-10-14 22:07:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:43,551 INFO L479 AbstractCegarLoop]: Abstraction has 12566 states and 14009 transitions. [2020-10-14 22:07:43,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:43,552 INFO L276 IsEmpty]: Start isEmpty. Operand 12566 states and 14009 transitions. [2020-10-14 22:07:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-14 22:07:43,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:43,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:43,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:07:43,563 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:43,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2141846787, now seen corresponding path program 1 times [2020-10-14 22:07:43,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:43,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14972287] [2020-10-14 22:07:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:46,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:46,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 575 [2020-10-14 22:07:46,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:07:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2835 [2020-10-14 22:07:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:46,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:07:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:07:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:07:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:46,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:46,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:07:46,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:46,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:46,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:46,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:07:46,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:46,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 22:07:46,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:46,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:07:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:46,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:07:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:47,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:47,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:07:47,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 22:07:47,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:47,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:07:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:47,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:07:47,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:47,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:07:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:07:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:07:47,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:47,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 22:07:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 382 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:07:47,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14972287] [2020-10-14 22:07:47,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:47,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:07:47,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44498052] [2020-10-14 22:07:47,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:07:47,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:47,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:07:47,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:07:47,744 INFO L87 Difference]: Start difference. First operand 12566 states and 14009 transitions. Second operand 10 states. [2020-10-14 22:08:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:09,618 INFO L93 Difference]: Finished difference Result 25296 states and 29145 transitions. [2020-10-14 22:08:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 22:08:09,621 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 561 [2020-10-14 22:08:09,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:09,659 INFO L225 Difference]: With dead ends: 25296 [2020-10-14 22:08:09,659 INFO L226 Difference]: Without dead ends: 16151 [2020-10-14 22:08:09,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2020-10-14 22:08:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16151 states. [2020-10-14 22:08:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16151 to 15745. [2020-10-14 22:08:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15745 states. [2020-10-14 22:08:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15745 states to 15745 states and 17571 transitions. [2020-10-14 22:08:09,986 INFO L78 Accepts]: Start accepts. Automaton has 15745 states and 17571 transitions. Word has length 561 [2020-10-14 22:08:09,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:09,987 INFO L479 AbstractCegarLoop]: Abstraction has 15745 states and 17571 transitions. [2020-10-14 22:08:09,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:08:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 15745 states and 17571 transitions. [2020-10-14 22:08:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2020-10-14 22:08:09,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:09,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:08:09,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:08:09,997 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:09,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2146890532, now seen corresponding path program 1 times [2020-10-14 22:08:09,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:10,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670817189] [2020-10-14 22:08:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:10,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:10,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-14 22:08:10,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-14 22:08:10,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:10,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:08:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 22:08:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:10,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:10,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:10,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:08:10,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:10,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:11,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:11,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:11,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:11,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:08:11,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:11,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 22:08:11,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:11,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:11,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:11,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:08:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:11,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:11,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:11,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:08:11,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:11,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:08:11,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:11,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:08:11,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:08:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:11,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:11,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 22:08:11,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:11,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 22:08:11,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:11,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 22:08:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:08:11,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670817189] [2020-10-14 22:08:11,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:11,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:08:11,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922409259] [2020-10-14 22:08:11,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:08:11,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:11,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:08:11,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:08:11,602 INFO L87 Difference]: Start difference. First operand 15745 states and 17571 transitions. Second operand 7 states. [2020-10-14 22:08:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:27,169 INFO L93 Difference]: Finished difference Result 31831 states and 36600 transitions. [2020-10-14 22:08:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:08:27,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 568 [2020-10-14 22:08:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:27,212 INFO L225 Difference]: With dead ends: 31831 [2020-10-14 22:08:27,213 INFO L226 Difference]: Without dead ends: 19509