/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:35:52,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:35:52,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:35:52,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:35:52,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:35:52,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:35:52,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:35:52,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:35:52,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:35:52,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:35:52,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:35:52,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:35:52,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:35:52,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:35:52,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:35:52,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:35:52,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:35:52,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:35:52,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:35:52,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:35:52,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:35:52,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:35:52,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:35:52,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:35:52,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:35:52,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:35:52,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:35:52,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:35:52,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:35:52,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:35:52,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:35:52,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:35:52,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:35:52,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:35:52,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:35:52,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:35:52,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:35:52,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:35:52,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:35:52,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:35:52,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:35:52,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:35:52,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:35:52,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:35:52,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:35:52,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:35:52,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:35:52,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:35:52,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:35:52,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:35:52,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:35:52,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:35:52,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:35:52,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:35:52,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:35:52,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:35:52,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:35:52,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:35:52,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:35:52,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:35:52,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:35:52,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:35:52,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:35:52,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:35:52,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:35:52,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:35:52,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:35:52,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:35:52,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:35:52,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:35:52,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:35:52,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:35:53,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:35:53,328 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:35:53,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:35:53,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:35:53,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:35:53,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label27.c [2020-10-13 06:35:53,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6deeb1013/313a2392c0b242f48c1d5eadfa02dd05/FLAGb0d81fac0 [2020-10-13 06:35:54,185 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:35:54,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label27.c [2020-10-13 06:35:54,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6deeb1013/313a2392c0b242f48c1d5eadfa02dd05/FLAGb0d81fac0 [2020-10-13 06:35:54,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6deeb1013/313a2392c0b242f48c1d5eadfa02dd05 [2020-10-13 06:35:54,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:35:54,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:35:54,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:35:54,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:35:54,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:35:54,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:35:54" (1/1) ... [2020-10-13 06:35:54,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dcedafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:54, skipping insertion in model container [2020-10-13 06:35:54,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:35:54" (1/1) ... [2020-10-13 06:35:54,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:35:54,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:35:56,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:35:56,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:35:57,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:35:57,277 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:35:57,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57 WrapperNode [2020-10-13 06:35:57,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:35:57,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:35:57,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:35:57,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:35:57,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (1/1) ... [2020-10-13 06:35:57,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (1/1) ... [2020-10-13 06:35:57,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (1/1) ... [2020-10-13 06:35:57,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (1/1) ... [2020-10-13 06:35:57,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (1/1) ... [2020-10-13 06:35:57,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (1/1) ... [2020-10-13 06:35:57,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (1/1) ... [2020-10-13 06:35:57,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:35:57,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:35:57,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:35:57,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:35:57,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:35:57,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:35:57,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:35:57,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:35:57,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:35:57,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:35:57,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:35:57,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:35:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:35:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:35:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:35:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:35:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:35:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:35:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:35:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:35:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:35:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:36:01,852 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:36:01,852 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:36:01,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:36:01 BoogieIcfgContainer [2020-10-13 06:36:01,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:36:01,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:36:01,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:36:01,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:36:01,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:35:54" (1/3) ... [2020-10-13 06:36:01,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b07630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:36:01, skipping insertion in model container [2020-10-13 06:36:01,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:57" (2/3) ... [2020-10-13 06:36:01,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b07630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:36:01, skipping insertion in model container [2020-10-13 06:36:01,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:36:01" (3/3) ... [2020-10-13 06:36:01,874 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label27.c [2020-10-13 06:36:01,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:36:01,893 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:36:01,907 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:36:01,940 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:36:01,940 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:36:01,940 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:36:01,940 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:36:01,940 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:36:01,940 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:36:01,941 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:36:01,941 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:36:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:36:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2020-10-13 06:36:02,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:36:02,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:36:02,031 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:36:02,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:36:02,038 INFO L82 PathProgramCache]: Analyzing trace with hash 225301075, now seen corresponding path program 1 times [2020-10-13 06:36:02,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:36:02,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983215422] [2020-10-13 06:36:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:36:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:08,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:08,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-13 06:36:08,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:36:08,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5283 [2020-10-13 06:36:08,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:36:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:36:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:36:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:36:10,091 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-13 06:36:10,236 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-13 06:36:10,392 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-13 06:36:10,574 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-10-13 06:36:10,730 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-10-13 06:36:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:36:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:11,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:11,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:36:11,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:36:11,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:36:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:36:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:36:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:36:15,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983215422] [2020-10-13 06:36:15,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:36:15,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:36:15,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123896068] [2020-10-13 06:36:15,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:36:15,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:36:15,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:36:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:36:15,643 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:36:15,960 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 06:36:16,117 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 06:36:16,321 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-13 06:36:16,664 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-13 06:36:16,936 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-13 06:36:19,064 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-13 06:36:19,407 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 103 [2020-10-13 06:36:21,538 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:36:22,622 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:36:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:36:31,507 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:36:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:36:31,510 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 792 [2020-10-13 06:36:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:36:31,572 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:36:31,572 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:36:31,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:36:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:36:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:36:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:36:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:36:31,752 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 792 [2020-10-13 06:36:31,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:36:31,756 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:36:31,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:36:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:36:31,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-13 06:36:31,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:36:31,810 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:36:31,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:36:31,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:36:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:36:31,812 INFO L82 PathProgramCache]: Analyzing trace with hash -542333084, now seen corresponding path program 1 times [2020-10-13 06:36:31,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:36:31,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188648043] [2020-10-13 06:36:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:36:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:33,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:37,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:37,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-13 06:36:37,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:36:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 06:36:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:36:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:36:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:36:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:36:39,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:36:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:39,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:39,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:39,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:36:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:36:39,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:36:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:36:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:36:39,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:36:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:39,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:39,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:39,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:36:39,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:39,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:36:39,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:36:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:36:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:36:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:36:43,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188648043] [2020-10-13 06:36:43,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:36:43,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:36:43,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182493377] [2020-10-13 06:36:43,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:36:43,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:36:43,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:36:43,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:36:43,752 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-13 06:36:46,413 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-13 06:36:48,310 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2020-10-13 06:36:48,921 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:36:49,795 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:36:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:36:58,424 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-13 06:36:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:36:58,428 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 811 [2020-10-13 06:36:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:36:58,441 INFO L225 Difference]: With dead ends: 3123 [2020-10-13 06:36:58,441 INFO L226 Difference]: Without dead ends: 2276 [2020-10-13 06:36:58,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:36:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-13 06:36:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-13 06:36:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-13 06:36:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-13 06:36:58,505 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 811 [2020-10-13 06:36:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:36:58,507 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-13 06:36:58,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:36:58,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-13 06:36:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-13 06:36:58,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:36:58,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:36:58,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:36:58,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:36:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:36:58,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1605938878, now seen corresponding path program 1 times [2020-10-13 06:36:58,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:36:58,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672318995] [2020-10-13 06:36:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:36:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:03,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 834 [2020-10-13 06:37:03,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:37:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 06:37:03,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:37:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:37:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:37:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:05,902 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-13 06:37:06,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:06,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:06,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:06,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:37:06,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:06,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:06,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:06,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:06,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:37:06,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:06,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:37:06,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:37:06,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:37:10,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672318995] [2020-10-13 06:37:10,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:10,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:37:10,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498475284] [2020-10-13 06:37:10,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:37:10,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:10,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:37:10,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:37:10,044 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-13 06:37:10,529 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:37:15,072 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 06:37:16,048 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-13 06:37:16,362 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-10-13 06:37:16,845 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-10-13 06:37:18,112 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-10-13 06:37:21,862 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-10-13 06:37:22,251 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 06:37:22,451 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-13 06:37:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:27,208 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-13 06:37:27,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:37:27,209 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 818 [2020-10-13 06:37:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:27,223 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 06:37:27,223 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 06:37:27,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:37:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 06:37:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-13 06:37:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-13 06:37:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-13 06:37:27,300 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 818 [2020-10-13 06:37:27,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:27,302 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-13 06:37:27,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:37:27,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-13 06:37:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-10-13 06:37:27,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:27,315 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:37:27,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:37:27,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:27,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2085890249, now seen corresponding path program 1 times [2020-10-13 06:37:27,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:27,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81661756] [2020-10-13 06:37:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:27,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:27,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:32,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:32,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 846 [2020-10-13 06:37:32,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:37:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 06:37:32,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:37:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:37:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 797 [2020-10-13 06:37:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:32,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:32,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:32,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:37:32,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:33,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:33,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:33,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:33,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:33,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:37:33,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:33,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:33,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:33,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:33,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:37:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:33,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:33,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:37:33,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:37:33,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:37:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:37:33,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81661756] [2020-10-13 06:37:33,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:33,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:37:33,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102740307] [2020-10-13 06:37:33,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:37:33,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:33,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:37:33,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:37:33,529 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-13 06:37:41,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:41,789 INFO L93 Difference]: Finished difference Result 5684 states and 8005 transitions. [2020-10-13 06:37:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:37:41,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 828 [2020-10-13 06:37:41,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:41,808 INFO L225 Difference]: With dead ends: 5684 [2020-10-13 06:37:41,808 INFO L226 Difference]: Without dead ends: 3631 [2020-10-13 06:37:41,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:37:41,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-13 06:37:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2020-10-13 06:37:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-10-13 06:37:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4725 transitions. [2020-10-13 06:37:41,926 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4725 transitions. Word has length 828 [2020-10-13 06:37:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:41,928 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4725 transitions. [2020-10-13 06:37:41,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:37:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4725 transitions. [2020-10-13 06:37:41,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2020-10-13 06:37:41,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:41,946 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:37:41,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:37:41,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1839862130, now seen corresponding path program 1 times [2020-10-13 06:37:41,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:41,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740045802] [2020-10-13 06:37:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:42,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:47,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:47,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 898 [2020-10-13 06:37:47,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:37:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 06:37:47,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:37:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:37:47,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:47,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:47,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:47,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:47,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:47,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:37:47,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:47,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:37:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:37:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:47,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:47,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:37:47,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:37:47,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:37:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:37:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:47,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:47,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:37:47,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:47,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 06:37:47,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:37:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:37:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:37:48,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740045802] [2020-10-13 06:37:48,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:48,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:37:48,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866277697] [2020-10-13 06:37:48,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:37:48,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:48,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:37:48,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:37:48,338 INFO L87 Difference]: Start difference. First operand 3631 states and 4725 transitions. Second operand 7 states. [2020-10-13 06:37:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:59,411 INFO L93 Difference]: Finished difference Result 8309 states and 11659 transitions. [2020-10-13 06:37:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:37:59,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 878 [2020-10-13 06:37:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:59,443 INFO L225 Difference]: With dead ends: 8309 [2020-10-13 06:37:59,444 INFO L226 Difference]: Without dead ends: 5411 [2020-10-13 06:37:59,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:37:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2020-10-13 06:37:59,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5376. [2020-10-13 06:37:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5376 states. [2020-10-13 06:37:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 6792 transitions. [2020-10-13 06:37:59,617 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 6792 transitions. Word has length 878 [2020-10-13 06:37:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:59,618 INFO L479 AbstractCegarLoop]: Abstraction has 5376 states and 6792 transitions. [2020-10-13 06:37:59,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:37:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 6792 transitions. [2020-10-13 06:37:59,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-13 06:37:59,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:59,637 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:37:59,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:37:59,638 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:59,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:59,638 INFO L82 PathProgramCache]: Analyzing trace with hash 984628220, now seen corresponding path program 1 times [2020-10-13 06:37:59,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:59,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19684708] [2020-10-13 06:37:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:59,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:59,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:04,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:04,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 901 [2020-10-13 06:38:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-13 06:38:04,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:38:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:38:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:05,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:05,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:05,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:05,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:05,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:38:05,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:05,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:05,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:05,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:05,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:05,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:38:05,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:05,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:05,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:05,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:38:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:38:05,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:38:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:38:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:05,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:05,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:38:05,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:05,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 06:38:05,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:38:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:38:05,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19684708] [2020-10-13 06:38:05,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:05,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:38:05,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936736183] [2020-10-13 06:38:05,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:38:05,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:05,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:38:05,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:38:05,849 INFO L87 Difference]: Start difference. First operand 5376 states and 6792 transitions. Second operand 7 states. [2020-10-13 06:38:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:17,073 INFO L93 Difference]: Finished difference Result 13652 states and 18198 transitions. [2020-10-13 06:38:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:38:17,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 881 [2020-10-13 06:38:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:17,129 INFO L225 Difference]: With dead ends: 13652 [2020-10-13 06:38:17,130 INFO L226 Difference]: Without dead ends: 9009 [2020-10-13 06:38:17,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:38:17,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9009 states. [2020-10-13 06:38:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9009 to 8929. [2020-10-13 06:38:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8929 states. [2020-10-13 06:38:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 11049 transitions. [2020-10-13 06:38:17,367 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 11049 transitions. Word has length 881 [2020-10-13 06:38:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:17,367 INFO L479 AbstractCegarLoop]: Abstraction has 8929 states and 11049 transitions. [2020-10-13 06:38:17,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:38:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 11049 transitions. [2020-10-13 06:38:17,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-13 06:38:17,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:17,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:38:17,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:38:17,417 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:17,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:17,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1697431550, now seen corresponding path program 1 times [2020-10-13 06:38:17,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:17,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001438215] [2020-10-13 06:38:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:20,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:22,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:22,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-13 06:38:22,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:22,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-13 06:38:22,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:38:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 06:38:22,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:22,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:22,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:38:22,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:22,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:22,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:22,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:22,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:22,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:38:22,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:22,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:22,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:22,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:38:22,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:22,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:38:22,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:22,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:22,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:38:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:38:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:23,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:23,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:38:23,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 06:38:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:38:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:38:23,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001438215] [2020-10-13 06:38:23,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:23,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:38:23,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798942561] [2020-10-13 06:38:23,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:38:23,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:23,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:38:23,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:38:23,799 INFO L87 Difference]: Start difference. First operand 8929 states and 11049 transitions. Second operand 8 states. [2020-10-13 06:38:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:40,732 INFO L93 Difference]: Finished difference Result 30354 states and 40628 transitions. [2020-10-13 06:38:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:38:40,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 968 [2020-10-13 06:38:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:40,804 INFO L225 Difference]: With dead ends: 30354 [2020-10-13 06:38:40,804 INFO L226 Difference]: Without dead ends: 22158 [2020-10-13 06:38:40,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 06:38:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22158 states. [2020-10-13 06:38:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22158 to 22067. [2020-10-13 06:38:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22067 states. [2020-10-13 06:38:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22067 states to 22067 states and 28384 transitions. [2020-10-13 06:38:41,318 INFO L78 Accepts]: Start accepts. Automaton has 22067 states and 28384 transitions. Word has length 968 [2020-10-13 06:38:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:41,318 INFO L479 AbstractCegarLoop]: Abstraction has 22067 states and 28384 transitions. [2020-10-13 06:38:41,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:38:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22067 states and 28384 transitions. [2020-10-13 06:38:41,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-10-13 06:38:41,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:41,383 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:38:41,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:38:41,384 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:41,384 INFO L82 PathProgramCache]: Analyzing trace with hash 549692554, now seen corresponding path program 1 times [2020-10-13 06:38:41,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:41,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847697095] [2020-10-13 06:38:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:46,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:46,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-13 06:38:46,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 06:38:46,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:38:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:38:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:46,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:46,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:46,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:38:46,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:46,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:46,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:46,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:46,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:38:46,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:46,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:46,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:46,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:46,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:46,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:46,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:46,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:38:46,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:46,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 06:38:46,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:38:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:38:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:46,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:47,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:47,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:38:47,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 06:38:47,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:38:47,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:38:47,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847697095] [2020-10-13 06:38:47,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:47,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:38:47,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809138328] [2020-10-13 06:38:47,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:38:47,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:38:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:38:47,637 INFO L87 Difference]: Start difference. First operand 22067 states and 28384 transitions. Second operand 7 states. [2020-10-13 06:38:58,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:58,366 INFO L93 Difference]: Finished difference Result 62913 states and 83107 transitions. [2020-10-13 06:38:58,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:38:58,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 994 [2020-10-13 06:38:58,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:58,497 INFO L225 Difference]: With dead ends: 62913 [2020-10-13 06:38:58,498 INFO L226 Difference]: Without dead ends: 41579 [2020-10-13 06:38:58,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:38:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41579 states. [2020-10-13 06:38:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41579 to 34833. [2020-10-13 06:38:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34833 states. [2020-10-13 06:38:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34833 states to 34833 states and 43793 transitions. [2020-10-13 06:38:59,556 INFO L78 Accepts]: Start accepts. Automaton has 34833 states and 43793 transitions. Word has length 994 [2020-10-13 06:38:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:59,557 INFO L479 AbstractCegarLoop]: Abstraction has 34833 states and 43793 transitions. [2020-10-13 06:38:59,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:38:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 34833 states and 43793 transitions. [2020-10-13 06:38:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2020-10-13 06:38:59,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:59,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:38:59,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:38:59,636 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:59,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1470745867, now seen corresponding path program 1 times [2020-10-13 06:38:59,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:59,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994595445] [2020-10-13 06:38:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:00,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:02,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:04,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:04,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1074 [2020-10-13 06:39:04,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:39:04,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 06:39:04,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:39:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:39:04,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:04,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:04,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:04,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:39:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:05,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:39:05,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:39:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:39:05,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:39:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:39:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:39:05,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:39:05,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:39:05,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-13 06:39:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 06:39:05,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:39:05,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 06:39:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 324 proven. 49 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-13 06:39:05,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994595445] [2020-10-13 06:39:05,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:05,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:05,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319608689] [2020-10-13 06:39:05,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:05,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:05,660 INFO L87 Difference]: Start difference. First operand 34833 states and 43793 transitions. Second operand 7 states. [2020-10-13 06:39:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:15,877 INFO L93 Difference]: Finished difference Result 85927 states and 112323 transitions. [2020-10-13 06:39:15,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:39:15,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1052 [2020-10-13 06:39:15,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:16,062 INFO L225 Difference]: With dead ends: 85927 [2020-10-13 06:39:16,062 INFO L226 Difference]: Without dead ends: 51827 [2020-10-13 06:39:16,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:39:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51827 states. [2020-10-13 06:39:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51827 to 51814. [2020-10-13 06:39:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51814 states. [2020-10-13 06:39:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51814 states to 51814 states and 64601 transitions. [2020-10-13 06:39:17,172 INFO L78 Accepts]: Start accepts. Automaton has 51814 states and 64601 transitions. Word has length 1052 [2020-10-13 06:39:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:17,173 INFO L479 AbstractCegarLoop]: Abstraction has 51814 states and 64601 transitions. [2020-10-13 06:39:17,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:39:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 51814 states and 64601 transitions. [2020-10-13 06:39:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1166 [2020-10-13 06:39:17,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:17,259 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:39:17,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:39:17,259 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:17,260 INFO L82 PathProgramCache]: Analyzing trace with hash -799523086, now seen corresponding path program 1 times [2020-10-13 06:39:17,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:17,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148862961] [2020-10-13 06:39:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1189 [2020-10-13 06:39:22,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:39:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 06:39:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:39:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:39:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:22,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:22,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:22,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:22,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:39:22,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:22,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:22,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:22,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:22,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:39:22,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:22,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:22,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:22,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:39:22,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:39:22,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:22,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:39:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:22,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:22,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:39:22,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:39:22,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:39:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:22,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 06:39:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:23,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:23,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:39:23,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:39:23,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:39:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 06:39:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:23,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:23,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 06:39:23,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:23,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:39:23,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:23,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:23,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 06:39:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 490 proven. 49 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-13 06:39:23,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148862961] [2020-10-13 06:39:23,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:23,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:23,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012571744] [2020-10-13 06:39:23,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:23,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:23,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:23,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:23,681 INFO L87 Difference]: Start difference. First operand 51814 states and 64601 transitions. Second operand 7 states.