/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/Problem15_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:10:39,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:10:39,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:10:39,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:10:39,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:10:39,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:10:39,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:10:39,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:10:39,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:10:39,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:10:39,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:10:39,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:10:39,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:10:39,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:10:39,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:10:39,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:10:39,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:10:39,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:10:39,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:10:39,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:10:39,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:10:39,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:10:39,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:10:39,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:10:39,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:10:39,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:10:39,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:10:39,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:10:39,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:10:39,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:10:39,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:10:39,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:10:39,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:10:39,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:10:39,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:10:39,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:10:39,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:10:39,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:10:39,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:10:39,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:10:39,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:10:39,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:10:39,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:10:39,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:10:39,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:10:39,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:10:39,965 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:10:39,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:10:39,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:10:39,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:10:39,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:10:39,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:10:39,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:10:39,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:10:39,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:10:39,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:10:39,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:10:39,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:10:39,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:10:39,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:10:39,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:10:39,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:10:39,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:10:39,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:10:39,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:10:39,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:10:39,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:10:39,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:10:39,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:10:39,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:10:39,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:10:39,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:10:40,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:10:40,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:10:40,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:10:40,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:10:40,290 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:10:40,291 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label54.c [2020-10-13 09:10:40,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/762df1641/1b4c92896d714d94be24c4285271011d/FLAG7eb597a04 [2020-10-13 09:10:41,076 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:10:41,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label54.c [2020-10-13 09:10:41,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/762df1641/1b4c92896d714d94be24c4285271011d/FLAG7eb597a04 [2020-10-13 09:10:41,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/762df1641/1b4c92896d714d94be24c4285271011d [2020-10-13 09:10:41,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:10:41,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:10:41,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:10:41,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:10:41,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:10:41,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:41" (1/1) ... [2020-10-13 09:10:41,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143143ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:41, skipping insertion in model container [2020-10-13 09:10:41,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:41" (1/1) ... [2020-10-13 09:10:41,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:10:41,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:10:42,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:10:42,383 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:10:42,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:10:42,683 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:10:42,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42 WrapperNode [2020-10-13 09:10:42,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:10:42,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:10:42,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:10:42,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:10:42,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (1/1) ... [2020-10-13 09:10:42,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (1/1) ... [2020-10-13 09:10:42,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (1/1) ... [2020-10-13 09:10:42,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (1/1) ... [2020-10-13 09:10:42,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (1/1) ... [2020-10-13 09:10:42,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (1/1) ... [2020-10-13 09:10:42,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (1/1) ... [2020-10-13 09:10:42,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:10:42,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:10:42,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:10:42,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:10:42,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:10:42,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:10:42,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:10:42,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:10:42,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:10:42,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:10:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:10:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:10:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:10:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:10:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:10:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:10:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:10:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:10:48,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:10:48,873 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:10:48,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:10:48 BoogieIcfgContainer [2020-10-13 09:10:48,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:10:48,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:10:48,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:10:48,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:10:48,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:10:41" (1/3) ... [2020-10-13 09:10:48,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e0c051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:10:48, skipping insertion in model container [2020-10-13 09:10:48,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:42" (2/3) ... [2020-10-13 09:10:48,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e0c051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:10:48, skipping insertion in model container [2020-10-13 09:10:48,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:10:48" (3/3) ... [2020-10-13 09:10:48,895 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label54.c [2020-10-13 09:10:48,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:10:48,921 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:10:48,941 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:10:48,980 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:10:48,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:10:48,984 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:10:48,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:10:48,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:10:48,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:10:48,984 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:10:48,985 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:10:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:10:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 09:10:49,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:49,028 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] [2020-10-13 09:10:49,029 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:49,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:49,039 INFO L82 PathProgramCache]: Analyzing trace with hash 54256576, now seen corresponding path program 1 times [2020-10-13 09:10:49,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:49,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601639046] [2020-10-13 09:10:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:49,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:49,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 09:10:49,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-13 09:10:49,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:10:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:10:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:10:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:10:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:49,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:49,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:49,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:10:49,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:10:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:49,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601639046] [2020-10-13 09:10:49,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:10:49,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:10:49,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299504838] [2020-10-13 09:10:49,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:10:49,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:49,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:10:49,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:10:49,891 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:10:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:56,293 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:10:56,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:56,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 09:10:56,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:56,332 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:10:56,333 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:10:56,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:10:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:10:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:10:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:10:56,455 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 46 [2020-10-13 09:10:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:56,456 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:10:56,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:10:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:10:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 09:10:56,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:56,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:56,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:10:56,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:56,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1700418364, now seen corresponding path program 1 times [2020-10-13 09:10:56,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:56,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519799559] [2020-10-13 09:10:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:57,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:57,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:10:57,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1368 [2020-10-13 09:10:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:10:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 09:10:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:10:57,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:57,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:57,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:10:57,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:58,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:58,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:58,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:10:58,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:10:58,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:58,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:58,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:10:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:58,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519799559] [2020-10-13 09:10:58,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:58,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:58,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189086668] [2020-10-13 09:10:58,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:58,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:58,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:58,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:58,123 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-13 09:11:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:04,687 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-13 09:11:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:04,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 09:11:04,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:04,700 INFO L225 Difference]: With dead ends: 2008 [2020-10-13 09:11:04,701 INFO L226 Difference]: Without dead ends: 1323 [2020-10-13 09:11:04,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-13 09:11:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-13 09:11:04,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-13 09:11:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-13 09:11:04,759 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 115 [2020-10-13 09:11:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:04,760 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-13 09:11:04,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-13 09:11:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 09:11:04,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:04,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:04,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:11:04,765 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1390890329, now seen corresponding path program 1 times [2020-10-13 09:11:04,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:04,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634532867] [2020-10-13 09:11:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:04,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:06,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:09,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:09,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-13 09:11:09,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:11:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4876 [2020-10-13 09:11:09,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:11:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:11:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:09,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:09,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:09,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:09,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:11:09,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:09,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:09,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:09,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:11:09,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:11:09,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:11:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:11:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:10,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:10,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:11:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-13 09:11:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:11:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:11:10,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634532867] [2020-10-13 09:11:10,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:10,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:11:10,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871495294] [2020-10-13 09:11:10,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:11:10,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:10,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:11:10,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:10,678 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 6 states. [2020-10-13 09:11:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:18,846 INFO L93 Difference]: Finished difference Result 2708 states and 3509 transitions. [2020-10-13 09:11:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:11:18,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2020-10-13 09:11:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:18,861 INFO L225 Difference]: With dead ends: 2708 [2020-10-13 09:11:18,862 INFO L226 Difference]: Without dead ends: 1357 [2020-10-13 09:11:18,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:11:18,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-10-13 09:11:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1317. [2020-10-13 09:11:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-13 09:11:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1697 transitions. [2020-10-13 09:11:18,923 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1697 transitions. Word has length 220 [2020-10-13 09:11:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:18,925 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1697 transitions. [2020-10-13 09:11:18,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:11:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1697 transitions. [2020-10-13 09:11:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-13 09:11:18,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:18,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:18,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:11:18,935 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:18,935 INFO L82 PathProgramCache]: Analyzing trace with hash 750671322, now seen corresponding path program 1 times [2020-10-13 09:11:18,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:18,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108541643] [2020-10-13 09:11:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:24,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-13 09:11:24,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:11:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 09:11:24,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:11:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:11:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:24,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:24,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:24,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:24,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:24,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:24,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:24,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:11:24,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 09:11:24,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:24,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:11:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:11:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:24,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:11:24,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 09:11:24,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:11:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:11:24,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108541643] [2020-10-13 09:11:24,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:24,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:11:24,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038959960] [2020-10-13 09:11:24,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:11:24,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:24,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:11:24,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:11:24,846 INFO L87 Difference]: Start difference. First operand 1317 states and 1697 transitions. Second operand 7 states. [2020-10-13 09:11:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:36,337 INFO L93 Difference]: Finished difference Result 3349 states and 4510 transitions. [2020-10-13 09:11:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:11:36,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-13 09:11:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:36,355 INFO L225 Difference]: With dead ends: 3349 [2020-10-13 09:11:36,355 INFO L226 Difference]: Without dead ends: 1991 [2020-10-13 09:11:36,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:11:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-10-13 09:11:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1975. [2020-10-13 09:11:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-10-13 09:11:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2517 transitions. [2020-10-13 09:11:36,449 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2517 transitions. Word has length 287 [2020-10-13 09:11:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:36,451 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 2517 transitions. [2020-10-13 09:11:36,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:11:36,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2517 transitions. [2020-10-13 09:11:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 09:11:36,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:36,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:36,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:11:36,458 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:36,458 INFO L82 PathProgramCache]: Analyzing trace with hash 899976135, now seen corresponding path program 1 times [2020-10-13 09:11:36,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:36,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460539243] [2020-10-13 09:11:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:36,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:41,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:41,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 09:11:41,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:11:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4623 [2020-10-13 09:11:41,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-13 09:11:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 09:11:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:41,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:41,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:41,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:11:41,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:41,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:41,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:41,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:41,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:11:41,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:41,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:11:41,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:41,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:41,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:41,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:11:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:41,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:41,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:11:41,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:11:41,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:11:41,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:11:41,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460539243] [2020-10-13 09:11:41,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:41,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:41,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31728955] [2020-10-13 09:11:41,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:41,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:41,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:41,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:41,769 INFO L87 Difference]: Start difference. First operand 1975 states and 2517 transitions. Second operand 5 states. [2020-10-13 09:11:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:48,419 INFO L93 Difference]: Finished difference Result 4606 states and 5941 transitions. [2020-10-13 09:11:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:48,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 09:11:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:48,445 INFO L225 Difference]: With dead ends: 4606 [2020-10-13 09:11:48,445 INFO L226 Difference]: Without dead ends: 3262 [2020-10-13 09:11:48,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:48,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2020-10-13 09:11:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2644. [2020-10-13 09:11:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-10-13 09:11:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3415 transitions. [2020-10-13 09:11:48,543 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3415 transitions. Word has length 326 [2020-10-13 09:11:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:48,545 INFO L479 AbstractCegarLoop]: Abstraction has 2644 states and 3415 transitions. [2020-10-13 09:11:48,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3415 transitions. [2020-10-13 09:11:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-13 09:11:48,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:48,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:48,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:11:48,556 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:48,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1148766976, now seen corresponding path program 1 times [2020-10-13 09:11:48,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:48,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494716449] [2020-10-13 09:11:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:48,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-13 09:11:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:11:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4345 [2020-10-13 09:11:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-13 09:11:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:11:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:53,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:53,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:53,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:53,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:11:53,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:53,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:53,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:53,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:11:53,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:11:53,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:11:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:53,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:11:53,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:11:53,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:11:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 09:11:53,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494716449] [2020-10-13 09:11:53,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:53,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:53,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043520006] [2020-10-13 09:11:53,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:53,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:53,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:53,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:53,706 INFO L87 Difference]: Start difference. First operand 2644 states and 3415 transitions. Second operand 5 states. [2020-10-13 09:11:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:58,872 INFO L93 Difference]: Finished difference Result 5307 states and 6870 transitions. [2020-10-13 09:11:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:58,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-13 09:11:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:58,894 INFO L225 Difference]: With dead ends: 5307 [2020-10-13 09:11:58,894 INFO L226 Difference]: Without dead ends: 2644 [2020-10-13 09:11:58,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-10-13 09:11:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2644. [2020-10-13 09:11:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-10-13 09:11:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3411 transitions. [2020-10-13 09:11:58,965 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3411 transitions. Word has length 342 [2020-10-13 09:11:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:58,966 INFO L479 AbstractCegarLoop]: Abstraction has 2644 states and 3411 transitions. [2020-10-13 09:11:58,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3411 transitions. [2020-10-13 09:11:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-13 09:11:58,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:58,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:58,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:11:58,973 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:58,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1713181577, now seen corresponding path program 1 times [2020-10-13 09:11:58,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:58,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951048527] [2020-10-13 09:11:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:59,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:02,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-13 09:12:02,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:12:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3433 [2020-10-13 09:12:02,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-13 09:12:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 09:12:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:02,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:02,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:02,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:02,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:02,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:02,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:02,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:12:02,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:02,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:02,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:02,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:02,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:02,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:02,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:12:02,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:12:02,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:12:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-13 09:12:02,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951048527] [2020-10-13 09:12:02,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:02,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:02,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480378357] [2020-10-13 09:12:02,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:02,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:02,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:02,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:02,895 INFO L87 Difference]: Start difference. First operand 2644 states and 3411 transitions. Second operand 5 states. [2020-10-13 09:12:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:11,998 INFO L93 Difference]: Finished difference Result 6552 states and 8802 transitions. [2020-10-13 09:12:11,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:11,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2020-10-13 09:12:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:12,021 INFO L225 Difference]: With dead ends: 6552 [2020-10-13 09:12:12,021 INFO L226 Difference]: Without dead ends: 3918 [2020-10-13 09:12:12,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2020-10-13 09:12:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3913. [2020-10-13 09:12:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3913 states. [2020-10-13 09:12:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 5005 transitions. [2020-10-13 09:12:12,132 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 5005 transitions. Word has length 345 [2020-10-13 09:12:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:12,133 INFO L479 AbstractCegarLoop]: Abstraction has 3913 states and 5005 transitions. [2020-10-13 09:12:12,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:12:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 5005 transitions. [2020-10-13 09:12:12,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-13 09:12:12,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:12,141 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:12,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:12:12,141 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:12,142 INFO L82 PathProgramCache]: Analyzing trace with hash -745745660, now seen corresponding path program 1 times [2020-10-13 09:12:12,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:12,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876965389] [2020-10-13 09:12:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:13,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-13 09:12:16,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:12:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4434 [2020-10-13 09:12:16,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 322 [2020-10-13 09:12:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 09:12:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:16,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:16,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:16,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:12:16,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:16,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:17,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:17,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:12:17,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:12:17,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:12:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 09:12:17,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876965389] [2020-10-13 09:12:17,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:17,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:12:17,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081907307] [2020-10-13 09:12:17,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:12:17,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:17,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:12:17,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:17,108 INFO L87 Difference]: Start difference. First operand 3913 states and 5005 transitions. Second operand 6 states. [2020-10-13 09:12:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:32,364 INFO L93 Difference]: Finished difference Result 10325 states and 14026 transitions. [2020-10-13 09:12:32,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:12:32,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 356 [2020-10-13 09:12:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:32,402 INFO L225 Difference]: With dead ends: 10325 [2020-10-13 09:12:32,403 INFO L226 Difference]: Without dead ends: 6422 [2020-10-13 09:12:32,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:12:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6422 states. [2020-10-13 09:12:32,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6422 to 6422. [2020-10-13 09:12:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6422 states. [2020-10-13 09:12:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6422 states to 6422 states and 8392 transitions. [2020-10-13 09:12:32,610 INFO L78 Accepts]: Start accepts. Automaton has 6422 states and 8392 transitions. Word has length 356 [2020-10-13 09:12:32,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:32,611 INFO L479 AbstractCegarLoop]: Abstraction has 6422 states and 8392 transitions. [2020-10-13 09:12:32,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:12:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6422 states and 8392 transitions. [2020-10-13 09:12:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-13 09:12:32,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:32,621 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:32,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:12:32,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:32,622 INFO L82 PathProgramCache]: Analyzing trace with hash -751978457, now seen corresponding path program 1 times [2020-10-13 09:12:32,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:32,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639539826] [2020-10-13 09:12:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:32,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:36,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:37,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-13 09:12:37,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:12:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:12:37,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 392 [2020-10-13 09:12:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 09:12:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:37,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:37,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:12:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:37,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:37,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:37,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:12:37,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:37,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:37,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:37,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:12:37,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:12:37,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:12:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:38,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:38,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 09:12:38,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:12:38,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:38,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:12:38,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-13 09:12:38,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639539826] [2020-10-13 09:12:38,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:38,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:38,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395495272] [2020-10-13 09:12:38,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:38,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:38,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:38,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:38,106 INFO L87 Difference]: Start difference. First operand 6422 states and 8392 transitions. Second operand 5 states. [2020-10-13 09:12:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:48,202 INFO L93 Difference]: Finished difference Result 18144 states and 24369 transitions. [2020-10-13 09:12:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:48,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-10-13 09:12:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:48,261 INFO L225 Difference]: With dead ends: 18144 [2020-10-13 09:12:48,261 INFO L226 Difference]: Without dead ends: 11732 [2020-10-13 09:12:48,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11732 states. [2020-10-13 09:12:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11732 to 11720. [2020-10-13 09:12:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11720 states. [2020-10-13 09:12:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11720 states to 11720 states and 14969 transitions. [2020-10-13 09:12:48,570 INFO L78 Accepts]: Start accepts. Automaton has 11720 states and 14969 transitions. Word has length 424 [2020-10-13 09:12:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:48,571 INFO L479 AbstractCegarLoop]: Abstraction has 11720 states and 14969 transitions. [2020-10-13 09:12:48,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:12:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11720 states and 14969 transitions. [2020-10-13 09:12:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-13 09:12:48,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:48,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:48,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:12:48,584 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:48,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1690536469, now seen corresponding path program 1 times [2020-10-13 09:12:48,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:48,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300691993] [2020-10-13 09:12:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:48,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:53,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-13 09:12:53,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:12:53,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:12:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:12:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:12:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:53,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:53,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:53,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:53,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:53,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:53,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:53,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:12:53,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:12:53,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:53,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:53,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:53,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:12:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:12:53,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:12:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:12:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:12:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:54,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:54,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:12:54,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:54,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:12:54,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:12:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 198 proven. 79 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 09:12:54,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300691993] [2020-10-13 09:12:54,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:54,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:12:54,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103195802] [2020-10-13 09:12:54,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:12:54,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:54,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:12:54,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:12:54,176 INFO L87 Difference]: Start difference. First operand 11720 states and 14969 transitions. Second operand 7 states. [2020-10-13 09:13:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:00,706 INFO L93 Difference]: Finished difference Result 23563 states and 30522 transitions. [2020-10-13 09:13:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:13:00,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-13 09:13:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:00,752 INFO L225 Difference]: With dead ends: 23563 [2020-10-13 09:13:00,752 INFO L226 Difference]: Without dead ends: 11853 [2020-10-13 09:13:00,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:13:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2020-10-13 09:13:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 11825. [2020-10-13 09:13:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11825 states. [2020-10-13 09:13:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11825 states to 11825 states and 15056 transitions. [2020-10-13 09:13:01,118 INFO L78 Accepts]: Start accepts. Automaton has 11825 states and 15056 transitions. Word has length 425 [2020-10-13 09:13:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:01,119 INFO L479 AbstractCegarLoop]: Abstraction has 11825 states and 15056 transitions. [2020-10-13 09:13:01,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:13:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 11825 states and 15056 transitions. [2020-10-13 09:13:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-13 09:13:01,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:01,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:13:01,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:13:01,132 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:01,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1422920080, now seen corresponding path program 1 times [2020-10-13 09:13:01,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:01,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357236038] [2020-10-13 09:13:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:06,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:06,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-13 09:13:06,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:13:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 09:13:06,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:13:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:13:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:13:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:06,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:06,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:06,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:06,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:06,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:06,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:06,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:06,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:13:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:13:06,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-13 09:13:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:13:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:06,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:06,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:13:06,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:13:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-13 09:13:06,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:13:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:13:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:07,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-13 09:13:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:07,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:07,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:13:07,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:07,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:13:07,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:13:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:07,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 201 proven. 82 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 09:13:07,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357236038] [2020-10-13 09:13:07,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:07,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:13:07,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947581116] [2020-10-13 09:13:07,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:13:07,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:13:07,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:13:07,299 INFO L87 Difference]: Start difference. First operand 11825 states and 15056 transitions. Second operand 7 states. [2020-10-13 09:13:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:21,163 INFO L93 Difference]: Finished difference Result 27121 states and 35226 transitions. [2020-10-13 09:13:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:13:21,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-10-13 09:13:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:21,232 INFO L225 Difference]: With dead ends: 27121 [2020-10-13 09:13:21,232 INFO L226 Difference]: Without dead ends: 15005 [2020-10-13 09:13:21,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:13:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15005 states. [2020-10-13 09:13:21,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15005 to 14895. [2020-10-13 09:13:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14895 states. [2020-10-13 09:13:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14895 states to 14895 states and 18955 transitions. [2020-10-13 09:13:21,660 INFO L78 Accepts]: Start accepts. Automaton has 14895 states and 18955 transitions. Word has length 465 [2020-10-13 09:13:21,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:21,661 INFO L479 AbstractCegarLoop]: Abstraction has 14895 states and 18955 transitions. [2020-10-13 09:13:21,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:13:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 14895 states and 18955 transitions. [2020-10-13 09:13:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-13 09:13:21,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:21,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:13:21,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:13:21,684 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:21,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1817984710, now seen corresponding path program 1 times [2020-10-13 09:13:21,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:21,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491903013] [2020-10-13 09:13:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:25,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:26,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-13 09:13:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:13:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:13:26,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-13 09:13:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:13:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:26,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:26,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:26,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:26,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:26,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:26,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:26,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:27,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:27,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:13:27,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:13:27,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:27,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:13:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:27,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:27,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:13:27,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:13:27,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:13:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:27,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:13:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:13:27,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:13:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-10-13 09:13:27,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491903013] [2020-10-13 09:13:27,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:27,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:27,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957786785] [2020-10-13 09:13:27,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:27,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:27,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:27,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:27,397 INFO L87 Difference]: Start difference. First operand 14895 states and 18955 transitions. Second operand 5 states. [2020-10-13 09:13:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:42,172 INFO L93 Difference]: Finished difference Result 36593 states and 47429 transitions. [2020-10-13 09:13:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:42,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 481 [2020-10-13 09:13:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:42,244 INFO L225 Difference]: With dead ends: 36593 [2020-10-13 09:13:42,244 INFO L226 Difference]: Without dead ends: 21756 [2020-10-13 09:13:42,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21756 states. [2020-10-13 09:13:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21756 to 21736. [2020-10-13 09:13:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21736 states. [2020-10-13 09:13:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21736 states to 21736 states and 27849 transitions. [2020-10-13 09:13:42,697 INFO L78 Accepts]: Start accepts. Automaton has 21736 states and 27849 transitions. Word has length 481 [2020-10-13 09:13:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:42,698 INFO L479 AbstractCegarLoop]: Abstraction has 21736 states and 27849 transitions. [2020-10-13 09:13:42,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 21736 states and 27849 transitions. [2020-10-13 09:13:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-13 09:13:42,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:42,714 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:42,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:13:42,715 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:42,715 INFO L82 PathProgramCache]: Analyzing trace with hash -752181765, now seen corresponding path program 1 times [2020-10-13 09:13:42,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:42,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860448851] [2020-10-13 09:13:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:43,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:47,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:47,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-13 09:13:47,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:13:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 09:13:47,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:13:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 09:13:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:13:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:48,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:48,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:48,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:48,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:13:48,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:48,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:13:48,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:13:48,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:13:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:13:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:48,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:13:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:13:48,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:13:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 09:13:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:48,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:13:48,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:13:48,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 09:13:48,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:13:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:13:48,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:48,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-13 09:13:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:48,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:13:48,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 09:13:48,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:13:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 311 proven. 78 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-13 09:13:48,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860448851] [2020-10-13 09:13:48,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:48,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:13:48,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799600585] [2020-10-13 09:13:48,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:13:48,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:48,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:13:48,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:13:48,855 INFO L87 Difference]: Start difference. First operand 21736 states and 27849 transitions. Second operand 7 states. [2020-10-13 09:13:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:59,544 INFO L93 Difference]: Finished difference Result 44733 states and 59762 transitions. [2020-10-13 09:13:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:13:59,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-13 09:13:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:59,635 INFO L225 Difference]: With dead ends: 44733 [2020-10-13 09:13:59,636 INFO L226 Difference]: Without dead ends: 22062 [2020-10-13 09:13:59,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:13:59,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22062 states. [2020-10-13 09:14:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22062 to 17143. [2020-10-13 09:14:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17143 states. [2020-10-13 09:14:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17143 states to 17143 states and 21685 transitions. [2020-10-13 09:14:00,083 INFO L78 Accepts]: Start accepts. Automaton has 17143 states and 21685 transitions. Word has length 493 [2020-10-13 09:14:00,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:00,083 INFO L479 AbstractCegarLoop]: Abstraction has 17143 states and 21685 transitions. [2020-10-13 09:14:00,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:14:00,084 INFO L276 IsEmpty]: Start isEmpty. Operand 17143 states and 21685 transitions. [2020-10-13 09:14:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-10-13 09:14:00,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:00,100 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:14:00,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:14:00,100 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:00,101 INFO L82 PathProgramCache]: Analyzing trace with hash -807286071, now seen corresponding path program 1 times [2020-10-13 09:14:00,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:00,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055226916] [2020-10-13 09:14:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:00,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:05,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:05,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-13 09:14:05,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:14:05,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:14:05,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:14:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 09:14:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:14:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:05,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:05,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:05,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:14:05,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:05,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:05,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:14:05,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:14:05,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:14:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:05,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:14:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:14:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:14:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:14:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:05,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:05,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:14:05,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:14:05,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-13 09:14:05,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:14:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:14:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:14:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:06,025 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-13 09:14:06,233 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-13 09:14:06,433 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-13 09:14:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-13 09:14:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:06,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:06,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:06,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:14:06,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:14:06,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:14:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 329 proven. 82 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-13 09:14:07,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055226916] [2020-10-13 09:14:07,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:07,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:14:07,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519936673] [2020-10-13 09:14:07,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:14:07,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:07,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:14:07,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:14:07,174 INFO L87 Difference]: Start difference. First operand 17143 states and 21685 transitions. Second operand 10 states. [2020-10-13 09:14:07,403 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-13 09:14:07,737 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-13 09:14:07,940 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-13 09:14:08,117 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-10-13 09:14:09,924 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-10-13 09:14:10,450 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-10-13 09:14:10,715 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-10-13 09:14:12,943 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-13 09:14:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:19,940 INFO L93 Difference]: Finished difference Result 34427 states and 43657 transitions. [2020-10-13 09:14:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:14:19,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 519 [2020-10-13 09:14:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:19,995 INFO L225 Difference]: With dead ends: 34427 [2020-10-13 09:14:19,995 INFO L226 Difference]: Without dead ends: 17244 [2020-10-13 09:14:20,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:14:20,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17244 states. [2020-10-13 09:14:20,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17244 to 17181. [2020-10-13 09:14:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17181 states. [2020-10-13 09:14:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17181 states to 17181 states and 21668 transitions. [2020-10-13 09:14:20,355 INFO L78 Accepts]: Start accepts. Automaton has 17181 states and 21668 transitions. Word has length 519 [2020-10-13 09:14:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:20,356 INFO L479 AbstractCegarLoop]: Abstraction has 17181 states and 21668 transitions. [2020-10-13 09:14:20,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:14:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 17181 states and 21668 transitions. [2020-10-13 09:14:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-13 09:14:20,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:20,369 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:14:20,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:14:20,370 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:20,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:20,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1677942885, now seen corresponding path program 1 times [2020-10-13 09:14:20,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:20,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660840109] [2020-10-13 09:14:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:20,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:25,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:25,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-13 09:14:25,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:14:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:14:25,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 490 [2020-10-13 09:14:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 09:14:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:25,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:25,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:25,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:14:25,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:25,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:25,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:14:25,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:25,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:14:25,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:25,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:14:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:25,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:25,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:14:25,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:25,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:14:25,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:25,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:25,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:25,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:25,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:25,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:14:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:25,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:14:25,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:14:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 09:14:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-13 09:14:25,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660840109] [2020-10-13 09:14:25,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:25,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:25,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717221167] [2020-10-13 09:14:25,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:25,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:25,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:25,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:25,960 INFO L87 Difference]: Start difference. First operand 17181 states and 21668 transitions. Second operand 5 states.