/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:02:05,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:02:05,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:02:05,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:02:05,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:02:05,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:02:05,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:02:05,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:02:05,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:02:05,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:02:05,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:02:05,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:02:05,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:02:05,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:02:05,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:02:05,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:02:05,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:02:05,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:02:05,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:02:05,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:02:05,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:02:05,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:02:05,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:02:05,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:02:05,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:02:05,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:02:05,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:02:05,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:02:05,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:02:05,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:02:05,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:02:05,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:02:05,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:02:05,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:02:05,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:02:05,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:02:05,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:02:05,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:02:05,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:02:05,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:02:05,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:02:05,956 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 09:02:05,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:02:05,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:02:05,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:02:05,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:02:05,980 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:02:05,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:02:05,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:02:05,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:02:05,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:02:05,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:02:05,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:02:05,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:02:05,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:02:05,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:02:05,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:02:05,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:02:05,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:02:05,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:02:05,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:02:05,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:02:05,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:02:05,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:02:05,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:02:05,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:02:05,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:02:05,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:02:05,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:02:05,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:02:05,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:02:05,985 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 09:02:06,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:02:06,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:02:06,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:02:06,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:02:06,335 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:02:06,336 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label22.c [2020-10-13 09:02:06,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf3363723/e4d291d5d6b742ba908bbfd2768a9d62/FLAGbcd2274f5 [2020-10-13 09:02:07,099 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:02:07,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label22.c [2020-10-13 09:02:07,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf3363723/e4d291d5d6b742ba908bbfd2768a9d62/FLAGbcd2274f5 [2020-10-13 09:02:07,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf3363723/e4d291d5d6b742ba908bbfd2768a9d62 [2020-10-13 09:02:07,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:02:07,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:02:07,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:02:07,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:02:07,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:02:07,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:07" (1/1) ... [2020-10-13 09:02:07,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:07, skipping insertion in model container [2020-10-13 09:02:07,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:07" (1/1) ... [2020-10-13 09:02:07,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:02:07,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:02:08,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:02:08,385 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:02:08,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:02:08,759 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:02:08,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08 WrapperNode [2020-10-13 09:02:08,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:02:08,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:02:08,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:02:08,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:02:08,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (1/1) ... [2020-10-13 09:02:08,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (1/1) ... [2020-10-13 09:02:08,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (1/1) ... [2020-10-13 09:02:08,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (1/1) ... [2020-10-13 09:02:08,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (1/1) ... [2020-10-13 09:02:08,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (1/1) ... [2020-10-13 09:02:08,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (1/1) ... [2020-10-13 09:02:09,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:02:09,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:02:09,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:02:09,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:02:09,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (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 09:02:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:02:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:02:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:02:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:02:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:02:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:02:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:02:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:02:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:02:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:02:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:02:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:02:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:02:15,046 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:02:15,047 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:02:15,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:15 BoogieIcfgContainer [2020-10-13 09:02:15,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:02:15,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:02:15,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:02:15,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:02:15,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:02:07" (1/3) ... [2020-10-13 09:02:15,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5880c573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:15, skipping insertion in model container [2020-10-13 09:02:15,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:08" (2/3) ... [2020-10-13 09:02:15,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5880c573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:15, skipping insertion in model container [2020-10-13 09:02:15,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:15" (3/3) ... [2020-10-13 09:02:15,064 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label22.c [2020-10-13 09:02:15,075 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:02:15,084 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:02:15,100 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:02:15,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:02:15,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:02:15,133 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:02:15,133 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:02:15,133 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:02:15,133 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:02:15,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:02:15,134 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:02:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:02:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 09:02:15,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:15,174 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] [2020-10-13 09:02:15,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:15,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1306431624, now seen corresponding path program 1 times [2020-10-13 09:02:15,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:15,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089267879] [2020-10-13 09:02:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:15,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:15,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:15,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 09:02:15,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-13 09:02:15,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:02:15,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:02:15,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:02:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:02:15,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:15,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:02:15,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:02:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:15,832 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 09:02:15,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089267879] [2020-10-13 09:02:15,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:02:15,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:02:15,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921929300] [2020-10-13 09:02:15,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:02:15,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:02:15,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:02:15,859 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:02:23,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:23,765 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-13 09:02:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:23,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 09:02:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:23,796 INFO L225 Difference]: With dead ends: 1224 [2020-10-13 09:02:23,796 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 09:02:23,807 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 09:02:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 09:02:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-13 09:02:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:02:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-13 09:02:23,930 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 24 [2020-10-13 09:02:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:23,930 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-13 09:02:23,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:02:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-13 09:02:23,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 09:02:23,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:23,939 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:02:23,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:02:23,939 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:23,940 INFO L82 PathProgramCache]: Analyzing trace with hash -328033145, now seen corresponding path program 1 times [2020-10-13 09:02:23,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:23,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844826978] [2020-10-13 09:02:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:24,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:25,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:25,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:02:25,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:02:25,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-10-13 09:02:25,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:02:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:02:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:25,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:25,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:25,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:02:25,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:25,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:02:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:02:25,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:02:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:25,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844826978] [2020-10-13 09:02:25,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:25,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:25,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49296986] [2020-10-13 09:02:25,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:25,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:25,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:25,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:25,307 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-13 09:02:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:33,874 INFO L93 Difference]: Finished difference Result 1395 states and 2299 transitions. [2020-10-13 09:02:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:33,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 09:02:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:33,887 INFO L225 Difference]: With dead ends: 1395 [2020-10-13 09:02:33,888 INFO L226 Difference]: Without dead ends: 1022 [2020-10-13 09:02:33,890 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 09:02:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-10-13 09:02:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1016. [2020-10-13 09:02:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-13 09:02:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1466 transitions. [2020-10-13 09:02:33,935 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1466 transitions. Word has length 94 [2020-10-13 09:02:33,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:33,937 INFO L479 AbstractCegarLoop]: Abstraction has 1016 states and 1466 transitions. [2020-10-13 09:02:33,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1466 transitions. [2020-10-13 09:02:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 09:02:33,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:33,946 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:02:33,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:02:33,947 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:33,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1375804861, now seen corresponding path program 1 times [2020-10-13 09:02:33,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:33,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169292834] [2020-10-13 09:02:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:34,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:34,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:02:34,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:34,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-13 09:02:34,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:02:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:02:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:02:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:34,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:34,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:34,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:34,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:02:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:02:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:34,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:34,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:34,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:02:34,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:34,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-13 09:02:34,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:34,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:02:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:02:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:35,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169292834] [2020-10-13 09:02:35,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:02:35,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:02:35,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122708251] [2020-10-13 09:02:35,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:02:35,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:35,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:02:35,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:02:35,025 INFO L87 Difference]: Start difference. First operand 1016 states and 1466 transitions. Second operand 7 states. [2020-10-13 09:02:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:44,988 INFO L93 Difference]: Finished difference Result 2365 states and 3515 transitions. [2020-10-13 09:02:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:02:44,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-13 09:02:44,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:44,998 INFO L225 Difference]: With dead ends: 2365 [2020-10-13 09:02:44,999 INFO L226 Difference]: Without dead ends: 1355 [2020-10-13 09:02:45,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:02:45,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-10-13 09:02:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1329. [2020-10-13 09:02:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-10-13 09:02:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1742 transitions. [2020-10-13 09:02:45,056 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1742 transitions. Word has length 96 [2020-10-13 09:02:45,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:45,057 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1742 transitions. [2020-10-13 09:02:45,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:02:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1742 transitions. [2020-10-13 09:02:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 09:02:45,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:45,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:02:45,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:02:45,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:45,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1018476545, now seen corresponding path program 1 times [2020-10-13 09:02:45,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:45,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716411614] [2020-10-13 09:02:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:45,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:45,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:45,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:02:45,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:02:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-13 09:02:45,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:02:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:02:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:45,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:45,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:45,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:45,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:02:45,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:46,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:46,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:02:46,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:02:46,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:46,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:02:46,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:46,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716411614] [2020-10-13 09:02:46,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:46,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:46,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041383040] [2020-10-13 09:02:46,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:46,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:46,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:46,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:46,092 INFO L87 Difference]: Start difference. First operand 1329 states and 1742 transitions. Second operand 5 states. [2020-10-13 09:02:57,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:57,259 INFO L93 Difference]: Finished difference Result 2986 states and 4096 transitions. [2020-10-13 09:02:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:57,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 09:02:57,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:57,270 INFO L225 Difference]: With dead ends: 2986 [2020-10-13 09:02:57,270 INFO L226 Difference]: Without dead ends: 1659 [2020-10-13 09:02:57,277 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 09:02:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-10-13 09:02:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1655. [2020-10-13 09:02:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-10-13 09:02:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2108 transitions. [2020-10-13 09:02:57,335 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2108 transitions. Word has length 98 [2020-10-13 09:02:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:57,335 INFO L479 AbstractCegarLoop]: Abstraction has 1655 states and 2108 transitions. [2020-10-13 09:02:57,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2108 transitions. [2020-10-13 09:02:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 09:02:57,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:57,344 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:02:57,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:02:57,345 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:57,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:57,345 INFO L82 PathProgramCache]: Analyzing trace with hash -396281549, now seen corresponding path program 1 times [2020-10-13 09:02:57,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:57,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71254741] [2020-10-13 09:02:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:58,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:58,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 09:02:58,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:02:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-13 09:02:58,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:02:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:02:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:58,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:58,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:02:58,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:58,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:58,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:02:58,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:02:58,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:02:58,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:58,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71254741] [2020-10-13 09:02:58,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:58,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:58,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008179523] [2020-10-13 09:02:58,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:58,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:58,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:58,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:58,701 INFO L87 Difference]: Start difference. First operand 1655 states and 2108 transitions. Second operand 5 states. [2020-10-13 09:03:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:05,584 INFO L93 Difference]: Finished difference Result 4251 states and 5583 transitions. [2020-10-13 09:03:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:05,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 09:03:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:05,605 INFO L225 Difference]: With dead ends: 4251 [2020-10-13 09:03:05,605 INFO L226 Difference]: Without dead ends: 2910 [2020-10-13 09:03:05,608 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 09:03:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-10-13 09:03:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2020-10-13 09:03:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2910 states. [2020-10-13 09:03:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 3568 transitions. [2020-10-13 09:03:05,697 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 3568 transitions. Word has length 104 [2020-10-13 09:03:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:05,698 INFO L479 AbstractCegarLoop]: Abstraction has 2910 states and 3568 transitions. [2020-10-13 09:03:05,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 3568 transitions. [2020-10-13 09:03:05,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 09:03:05,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:05,700 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:03:05,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:03:05,700 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:05,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:05,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1167130857, now seen corresponding path program 1 times [2020-10-13 09:03:05,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:05,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813838971] [2020-10-13 09:03:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 09:03:06,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-13 09:03:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:03:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:03:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:06,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:06,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:03:06,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:03:06,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:06,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:03:06,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:03:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:03:06,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813838971] [2020-10-13 09:03:06,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:06,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:06,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748602276] [2020-10-13 09:03:06,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:06,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:06,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:06,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:06,764 INFO L87 Difference]: Start difference. First operand 2910 states and 3568 transitions. Second operand 5 states. [2020-10-13 09:03:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:17,509 INFO L93 Difference]: Finished difference Result 8022 states and 10063 transitions. [2020-10-13 09:03:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:17,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 09:03:17,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:17,540 INFO L225 Difference]: With dead ends: 8022 [2020-10-13 09:03:17,540 INFO L226 Difference]: Without dead ends: 5426 [2020-10-13 09:03:17,547 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 09:03:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2020-10-13 09:03:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 5409. [2020-10-13 09:03:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5409 states. [2020-10-13 09:03:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 6678 transitions. [2020-10-13 09:03:17,700 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 6678 transitions. Word has length 110 [2020-10-13 09:03:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:17,701 INFO L479 AbstractCegarLoop]: Abstraction has 5409 states and 6678 transitions. [2020-10-13 09:03:17,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 6678 transitions. [2020-10-13 09:03:17,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 09:03:17,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:17,705 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:17,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:03:17,705 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:17,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1921600978, now seen corresponding path program 1 times [2020-10-13 09:03:17,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:17,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103758727] [2020-10-13 09:03:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:17,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:20,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:03:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:03:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2600 [2020-10-13 09:03:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 09:03:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:03:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:20,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:20,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:20,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:20,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:20,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:03:20,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:20,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:20,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:20,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:03:20,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:20,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:03:20,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:20,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:03:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:20,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:20,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:03:20,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:03:20,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:03:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 09:03:20,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103758727] [2020-10-13 09:03:20,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:20,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:20,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954151723] [2020-10-13 09:03:20,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:20,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:20,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:20,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:20,614 INFO L87 Difference]: Start difference. First operand 5409 states and 6678 transitions. Second operand 5 states. [2020-10-13 09:03:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:31,082 INFO L93 Difference]: Finished difference Result 10511 states and 13634 transitions. [2020-10-13 09:03:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:31,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 09:03:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:31,117 INFO L225 Difference]: With dead ends: 10511 [2020-10-13 09:03:31,118 INFO L226 Difference]: Without dead ends: 6653 [2020-10-13 09:03:31,128 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 09:03:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6653 states. [2020-10-13 09:03:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6653 to 6651. [2020-10-13 09:03:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6651 states. [2020-10-13 09:03:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6651 states to 6651 states and 8113 transitions. [2020-10-13 09:03:31,298 INFO L78 Accepts]: Start accepts. Automaton has 6651 states and 8113 transitions. Word has length 177 [2020-10-13 09:03:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:31,299 INFO L479 AbstractCegarLoop]: Abstraction has 6651 states and 8113 transitions. [2020-10-13 09:03:31,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6651 states and 8113 transitions. [2020-10-13 09:03:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:03:31,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:31,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:31,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:03:31,304 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:31,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:31,304 INFO L82 PathProgramCache]: Analyzing trace with hash 558167526, now seen corresponding path program 1 times [2020-10-13 09:03:31,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:31,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122267861] [2020-10-13 09:03:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:35,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:35,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 09:03:35,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:35,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4394 [2020-10-13 09:03:35,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:03:35,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:03:35,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:35,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:35,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:35,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:35,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:03:35,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:35,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:35,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:35,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:03:35,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:03:35,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:03:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:35,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:36,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:36,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:03:36,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:36,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 09:03:36,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:03:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:03:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:03:36,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122267861] [2020-10-13 09:03:36,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:36,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:36,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977687794] [2020-10-13 09:03:36,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:36,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:36,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:36,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:36,202 INFO L87 Difference]: Start difference. First operand 6651 states and 8113 transitions. Second operand 5 states. [2020-10-13 09:03:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:44,180 INFO L93 Difference]: Finished difference Result 11767 states and 14575 transitions. [2020-10-13 09:03:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:44,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 09:03:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:44,230 INFO L225 Difference]: With dead ends: 11767 [2020-10-13 09:03:44,231 INFO L226 Difference]: Without dead ends: 6651 [2020-10-13 09:03:44,243 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 09:03:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2020-10-13 09:03:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6651. [2020-10-13 09:03:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6651 states. [2020-10-13 09:03:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6651 states to 6651 states and 8101 transitions. [2020-10-13 09:03:44,416 INFO L78 Accepts]: Start accepts. Automaton has 6651 states and 8101 transitions. Word has length 180 [2020-10-13 09:03:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:44,417 INFO L479 AbstractCegarLoop]: Abstraction has 6651 states and 8101 transitions. [2020-10-13 09:03:44,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:44,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6651 states and 8101 transitions. [2020-10-13 09:03:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 09:03:44,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:44,421 INFO L422 BasicCegarLoop]: trace histogram [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, 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 09:03:44,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:03:44,421 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:44,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:44,422 INFO L82 PathProgramCache]: Analyzing trace with hash -465315420, now seen corresponding path program 1 times [2020-10-13 09:03:44,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:44,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198770165] [2020-10-13 09:03:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:44,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:44,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:47,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 09:03:47,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:03:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-10-13 09:03:47,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:03:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:03:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:47,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:47,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:47,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:03:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:47,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:47,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:03:47,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:47,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:03:47,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:03:47,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 09:03:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:47,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:03:47,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 09:03:47,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:03:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:03:47,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198770165] [2020-10-13 09:03:47,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:47,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:03:47,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747543051] [2020-10-13 09:03:47,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:03:47,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:47,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:03:47,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:03:47,728 INFO L87 Difference]: Start difference. First operand 6651 states and 8101 transitions. Second operand 8 states. [2020-10-13 09:04:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:03,582 INFO L93 Difference]: Finished difference Result 20380 states and 27472 transitions. [2020-10-13 09:04:03,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:04:03,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-10-13 09:04:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:03,661 INFO L225 Difference]: With dead ends: 20380 [2020-10-13 09:04:03,661 INFO L226 Difference]: Without dead ends: 14042 [2020-10-13 09:04:03,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:04:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14042 states. [2020-10-13 09:04:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14042 to 14029. [2020-10-13 09:04:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14029 states. [2020-10-13 09:04:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14029 states to 14029 states and 18365 transitions. [2020-10-13 09:04:04,166 INFO L78 Accepts]: Start accepts. Automaton has 14029 states and 18365 transitions. Word has length 182 [2020-10-13 09:04:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:04,167 INFO L479 AbstractCegarLoop]: Abstraction has 14029 states and 18365 transitions. [2020-10-13 09:04:04,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:04:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14029 states and 18365 transitions. [2020-10-13 09:04:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 09:04:04,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:04,176 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:04,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:04:04,177 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:04,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:04,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2126108288, now seen corresponding path program 1 times [2020-10-13 09:04:04,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:04,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312361003] [2020-10-13 09:04:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:08,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 09:04:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:04:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4384 [2020-10-13 09:04:08,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-10-13 09:04:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:04:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:08,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:08,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:08,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:08,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:04:08,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:08,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:08,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:08,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:04:08,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:08,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:04:08,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:08,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:04:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:08,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:08,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:04:08,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:08,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:04:08,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:08,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:04:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:04:09,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312361003] [2020-10-13 09:04:09,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:09,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:09,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934022179] [2020-10-13 09:04:09,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:09,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:09,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:09,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:09,066 INFO L87 Difference]: Start difference. First operand 14029 states and 18365 transitions. Second operand 5 states. [2020-10-13 09:04:17,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:17,859 INFO L93 Difference]: Finished difference Result 30887 states and 42003 transitions. [2020-10-13 09:04:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:17,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-13 09:04:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:17,962 INFO L225 Difference]: With dead ends: 30887 [2020-10-13 09:04:17,962 INFO L226 Difference]: Without dead ends: 16236 [2020-10-13 09:04:18,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16236 states. [2020-10-13 09:04:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16236 to 16234. [2020-10-13 09:04:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16234 states. [2020-10-13 09:04:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16234 states to 16234 states and 21108 transitions. [2020-10-13 09:04:18,557 INFO L78 Accepts]: Start accepts. Automaton has 16234 states and 21108 transitions. Word has length 211 [2020-10-13 09:04:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:18,558 INFO L479 AbstractCegarLoop]: Abstraction has 16234 states and 21108 transitions. [2020-10-13 09:04:18,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 16234 states and 21108 transitions. [2020-10-13 09:04:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-13 09:04:18,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:18,571 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:18,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:04:18,572 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:18,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1498662045, now seen corresponding path program 1 times [2020-10-13 09:04:18,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:18,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111323487] [2020-10-13 09:04:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:21,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:22,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:22,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 09:04:22,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3817 [2020-10-13 09:04:22,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-13 09:04:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:04:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:22,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:22,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:22,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:22,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:22,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:22,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:22,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:04:22,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:22,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:04:22,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:22,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 09:04:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:22,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:22,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 09:04:22,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:22,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:04:22,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:22,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:04:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:23,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 09:04:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:23,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:23,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:23,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:04:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 09:04:23,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:04:23,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:04:23,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111323487] [2020-10-13 09:04:23,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:23,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:04:23,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797320812] [2020-10-13 09:04:23,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:04:23,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:23,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:04:23,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:04:23,345 INFO L87 Difference]: Start difference. First operand 16234 states and 21108 transitions. Second operand 8 states. [2020-10-13 09:04:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:37,373 INFO L93 Difference]: Finished difference Result 29753 states and 39812 transitions. [2020-10-13 09:04:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:04:37,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 254 [2020-10-13 09:04:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:37,451 INFO L225 Difference]: With dead ends: 29753 [2020-10-13 09:04:37,451 INFO L226 Difference]: Without dead ends: 16309 [2020-10-13 09:04:37,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:04:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16309 states. [2020-10-13 09:04:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16309 to 16285. [2020-10-13 09:04:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16285 states. [2020-10-13 09:04:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16285 states to 16285 states and 21386 transitions. [2020-10-13 09:04:37,917 INFO L78 Accepts]: Start accepts. Automaton has 16285 states and 21386 transitions. Word has length 254 [2020-10-13 09:04:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:37,918 INFO L479 AbstractCegarLoop]: Abstraction has 16285 states and 21386 transitions. [2020-10-13 09:04:37,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:04:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 16285 states and 21386 transitions. [2020-10-13 09:04:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-13 09:04:37,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:37,933 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:37,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:04:37,933 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:37,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1580658337, now seen corresponding path program 1 times [2020-10-13 09:04:37,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:37,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742835895] [2020-10-13 09:04:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:41,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:41,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-13 09:04:41,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:41,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3059 [2020-10-13 09:04:41,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:04:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:04:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:41,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:41,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:41,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:04:41,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:41,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:41,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:04:41,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:04:41,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:41,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 09:04:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:41,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:41,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:04:41,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:41,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:04:41,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:04:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:41,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 09:04:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:41,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:41,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:04:41,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 09:04:41,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:04:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 09:04:42,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742835895] [2020-10-13 09:04:42,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:42,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:04:42,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021387684] [2020-10-13 09:04:42,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:04:42,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:42,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:04:42,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:42,084 INFO L87 Difference]: Start difference. First operand 16285 states and 21386 transitions. Second operand 6 states. [2020-10-13 09:04:49,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:49,975 INFO L93 Difference]: Finished difference Result 30024 states and 40190 transitions. [2020-10-13 09:04:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:04:49,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-10-13 09:04:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:50,057 INFO L225 Difference]: With dead ends: 30024 [2020-10-13 09:04:50,058 INFO L226 Difference]: Without dead ends: 16323 [2020-10-13 09:04:50,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:04:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16323 states. [2020-10-13 09:04:50,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16323 to 16285. [2020-10-13 09:04:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16285 states. [2020-10-13 09:04:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16285 states to 16285 states and 21321 transitions. [2020-10-13 09:04:50,521 INFO L78 Accepts]: Start accepts. Automaton has 16285 states and 21321 transitions. Word has length 270 [2020-10-13 09:04:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:50,522 INFO L479 AbstractCegarLoop]: Abstraction has 16285 states and 21321 transitions. [2020-10-13 09:04:50,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:04:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 16285 states and 21321 transitions. [2020-10-13 09:04:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-13 09:04:50,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:50,534 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:50,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:04:50,534 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:50,535 INFO L82 PathProgramCache]: Analyzing trace with hash 902301368, now seen corresponding path program 1 times [2020-10-13 09:04:50,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:50,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172267532] [2020-10-13 09:04:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:52,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:53,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:53,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-13 09:04:53,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2903 [2020-10-13 09:04:53,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-13 09:04:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:04:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:53,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:53,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:53,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:04:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:53,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:53,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:04:53,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:04:53,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:53,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:53,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 09:04:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:53,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:53,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:53,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 09:04:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:04:53,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 09:04:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:53,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-13 09:04:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:53,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:54,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:54,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:04:54,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 09:04:54,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:04:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:04:54,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172267532] [2020-10-13 09:04:54,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:54,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:54,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974624387] [2020-10-13 09:04:54,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:54,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:54,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:54,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:54,227 INFO L87 Difference]: Start difference. First operand 16285 states and 21321 transitions. Second operand 7 states. [2020-10-13 09:05:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:02,268 INFO L93 Difference]: Finished difference Result 29795 states and 39776 transitions. [2020-10-13 09:05:02,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:05:02,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-13 09:05:02,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:02,313 INFO L225 Difference]: With dead ends: 29795 [2020-10-13 09:05:02,314 INFO L226 Difference]: Without dead ends: 16295 [2020-10-13 09:05:02,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:05:02,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16295 states. [2020-10-13 09:05:02,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16295 to 16285. [2020-10-13 09:05:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16285 states. [2020-10-13 09:05:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16285 states to 16285 states and 21286 transitions. [2020-10-13 09:05:02,745 INFO L78 Accepts]: Start accepts. Automaton has 16285 states and 21286 transitions. Word has length 286 [2020-10-13 09:05:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:02,745 INFO L479 AbstractCegarLoop]: Abstraction has 16285 states and 21286 transitions. [2020-10-13 09:05:02,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:05:02,745 INFO L276 IsEmpty]: Start isEmpty. Operand 16285 states and 21286 transitions. [2020-10-13 09:05:02,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-13 09:05:02,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:02,756 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 09:05:02,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:05:02,756 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:02,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:02,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1309853698, now seen corresponding path program 1 times [2020-10-13 09:05:02,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:02,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222887383] [2020-10-13 09:05:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:02,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:04,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:05,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-13 09:05:05,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:05:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2750 [2020-10-13 09:05:05,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-13 09:05:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:05:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:05,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:05,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:05,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:05,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:05,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:05,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:05,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:05,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:05:05,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:05:05,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:05,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 09:05:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:05,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:05,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:05:05,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:05:05,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:05:05,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-13 09:05:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:06,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:06,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:05:06,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-13 09:05:06,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:05:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:05:06,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:05:06,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222887383] [2020-10-13 09:05:06,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:06,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:05:06,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629728381] [2020-10-13 09:05:06,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:05:06,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:06,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:05:06,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:05:06,260 INFO L87 Difference]: Start difference. First operand 16285 states and 21286 transitions. Second operand 7 states. [2020-10-13 09:05:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:17,343 INFO L93 Difference]: Finished difference Result 29991 states and 39930 transitions. [2020-10-13 09:05:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:05:17,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-13 09:05:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:17,391 INFO L225 Difference]: With dead ends: 29991 [2020-10-13 09:05:17,391 INFO L226 Difference]: Without dead ends: 16293 [2020-10-13 09:05:17,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:05:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16293 states. [2020-10-13 09:05:17,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16293 to 16281. [2020-10-13 09:05:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16281 states. [2020-10-13 09:05:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16281 states to 16281 states and 21091 transitions. [2020-10-13 09:05:17,742 INFO L78 Accepts]: Start accepts. Automaton has 16281 states and 21091 transitions. Word has length 287 [2020-10-13 09:05:17,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:17,742 INFO L479 AbstractCegarLoop]: Abstraction has 16281 states and 21091 transitions. [2020-10-13 09:05:17,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:05:17,742 INFO L276 IsEmpty]: Start isEmpty. Operand 16281 states and 21091 transitions. [2020-10-13 09:05:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 09:05:17,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:17,756 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:17,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:05:17,757 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash -475879653, now seen corresponding path program 1 times [2020-10-13 09:05:17,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:17,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759152069] [2020-10-13 09:05:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:17,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:18,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:05:18,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-13 09:05:18,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:05:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:05:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-13 09:05:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:18,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:18,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:18,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:18,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:18,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:05:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:18,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:18,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:18,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:18,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 09:05:18,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:18,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-13 09:05:18,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:05:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-13 09:05:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-13 09:05:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:18,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:18,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:05:18,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:05:18,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:05:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 34 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:05:18,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759152069] [2020-10-13 09:05:18,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:18,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:05:18,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999307749] [2020-10-13 09:05:18,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:05:18,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:18,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:05:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:05:18,950 INFO L87 Difference]: Start difference. First operand 16281 states and 21091 transitions. Second operand 7 states. [2020-10-13 09:05:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:31,328 INFO L93 Difference]: Finished difference Result 32336 states and 42287 transitions. [2020-10-13 09:05:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:05:31,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-13 09:05:31,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:31,371 INFO L225 Difference]: With dead ends: 32336 [2020-10-13 09:05:31,371 INFO L226 Difference]: Without dead ends: 16368 [2020-10-13 09:05:31,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:05:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16368 states. [2020-10-13 09:05:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16368 to 15396. [2020-10-13 09:05:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15396 states. [2020-10-13 09:05:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15396 states to 15396 states and 19238 transitions. [2020-10-13 09:05:31,693 INFO L78 Accepts]: Start accepts. Automaton has 15396 states and 19238 transitions. Word has length 298 [2020-10-13 09:05:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:31,694 INFO L479 AbstractCegarLoop]: Abstraction has 15396 states and 19238 transitions. [2020-10-13 09:05:31,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:05:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 15396 states and 19238 transitions. [2020-10-13 09:05:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-13 09:05:31,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:31,705 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2020-10-13 09:05:31,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:05:31,705 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:31,706 INFO L82 PathProgramCache]: Analyzing trace with hash -223857175, now seen corresponding path program 1 times [2020-10-13 09:05:31,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:31,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338344435] [2020-10-13 09:05:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:36,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:36,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-13 09:05:36,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:05:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:05:36,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-13 09:05:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:05:36,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:36,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:36,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:05:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:36,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:36,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:36,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:05:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:37,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:05:37,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:37,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:05:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:05:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:37,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:37,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 09:05:37,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:37,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:05:37,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:05:37,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-13 09:05:37,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338344435] [2020-10-13 09:05:37,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:37,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:37,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536961161] [2020-10-13 09:05:37,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:37,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:37,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:37,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:37,242 INFO L87 Difference]: Start difference. First operand 15396 states and 19238 transitions. Second operand 5 states. [2020-10-13 09:05:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:46,112 INFO L93 Difference]: Finished difference Result 35457 states and 45912 transitions. [2020-10-13 09:05:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:46,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-10-13 09:05:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:46,160 INFO L225 Difference]: With dead ends: 35457 [2020-10-13 09:05:46,160 INFO L226 Difference]: Without dead ends: 22884 [2020-10-13 09:05:46,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:05:46,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22884 states. [2020-10-13 09:05:46,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22884 to 18520. [2020-10-13 09:05:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18520 states. [2020-10-13 09:05:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18520 states to 18520 states and 24027 transitions. [2020-10-13 09:05:46,552 INFO L78 Accepts]: Start accepts. Automaton has 18520 states and 24027 transitions. Word has length 423 [2020-10-13 09:05:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:46,554 INFO L479 AbstractCegarLoop]: Abstraction has 18520 states and 24027 transitions. [2020-10-13 09:05:46,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 18520 states and 24027 transitions. [2020-10-13 09:05:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-13 09:05:46,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:46,571 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:05:46,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:05:46,572 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:46,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:46,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1752338343, now seen corresponding path program 1 times [2020-10-13 09:05:46,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:46,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065766528] [2020-10-13 09:05:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking...