/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/reducercommutativity/max.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:09:57,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:09:57,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:09:57,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:09:57,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:09:57,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:09:57,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:09:57,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:09:57,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:09:57,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:09:57,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:09:57,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:09:57,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:09:57,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:09:57,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:09:57,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:09:57,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:09:57,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:09:57,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:09:57,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:09:57,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:09:57,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:09:57,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:09:57,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:09:57,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:09:57,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:09:57,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:09:57,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:09:57,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:09:57,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:09:57,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:09:57,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:09:57,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:09:57,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:09:57,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:09:57,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:09:57,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:09:57,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:09:57,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:09:57,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:09:57,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:09:57,941 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 13:09:57,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:09:57,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:09:57,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:09:57,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:09:57,965 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:09:57,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:09:57,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:09:57,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:09:57,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:09:57,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:09:57,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:09:57,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:09:57,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:09:57,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:09:57,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:09:57,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:09:57,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:09:57,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:09:57,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:09:57,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:09:57,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:09:57,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:09:57,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:09:57,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:09:57,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:09:57,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:09:57,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:09:57,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:09:57,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:09:57,970 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 13:09:58,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:09:58,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:09:58,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:09:58,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:09:58,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:09:58,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max.i [2020-10-13 13:09:58,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c8302bc/b9ddd40858e745298be35f6de1ea6ab4/FLAG30aede326 [2020-10-13 13:09:58,866 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:09:58,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max.i [2020-10-13 13:09:58,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c8302bc/b9ddd40858e745298be35f6de1ea6ab4/FLAG30aede326 [2020-10-13 13:09:59,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c8302bc/b9ddd40858e745298be35f6de1ea6ab4 [2020-10-13 13:09:59,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:09:59,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:09:59,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:09:59,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:09:59,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:09:59,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0386e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59, skipping insertion in model container [2020-10-13 13:09:59,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:09:59,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:09:59,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:09:59,543 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:09:59,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:09:59,603 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:09:59,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59 WrapperNode [2020-10-13 13:09:59,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:09:59,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:09:59,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:09:59,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:09:59,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (1/1) ... [2020-10-13 13:09:59,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:09:59,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:09:59,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:09:59,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:09:59,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (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 13:09:59,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:09:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:09:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-13 13:09:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:09:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:09:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 13:09:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-13 13:09:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 13:09:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:09:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 13:09:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 13:09:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 13:09:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:09:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:10:00,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:10:00,081 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 13:10:00,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:10:00 BoogieIcfgContainer [2020-10-13 13:10:00,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:10:00,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:10:00,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:10:00,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:10:00,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:09:59" (1/3) ... [2020-10-13 13:10:00,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cb75ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:10:00, skipping insertion in model container [2020-10-13 13:10:00,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:59" (2/3) ... [2020-10-13 13:10:00,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cb75ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:10:00, skipping insertion in model container [2020-10-13 13:10:00,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:10:00" (3/3) ... [2020-10-13 13:10:00,094 INFO L109 eAbstractionObserver]: Analyzing ICFG max.i [2020-10-13 13:10:00,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:10:00,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:10:00,131 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:10:00,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:10:00,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:10:00,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:10:00,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:10:00,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:10:00,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:10:00,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:10:00,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:10:00,199 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-13 13:10:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:10:00,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:00,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:00,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:00,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:00,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1705268457, now seen corresponding path program 1 times [2020-10-13 13:10:00,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:00,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16248241] [2020-10-13 13:10:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:01,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:01,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:10:01,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-13 13:10:01,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:10:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:10:01,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:01,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:10:01,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:01,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:10:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:10:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:01,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:01,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:10:01,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:01,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:10:01,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:01,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:10:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:10:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:01,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:01,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:01,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:10:01,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:10:01,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:10:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:10:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:01,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:01,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:01,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:01,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:10:01,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:01,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:10:01,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:01,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:01,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:10:01,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:01,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 13:10:01,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16248241] [2020-10-13 13:10:01,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:10:01,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 13:10:01,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856677469] [2020-10-13 13:10:01,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 13:10:01,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:01,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 13:10:01,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:10:01,989 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-13 13:10:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:02,126 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-10-13 13:10:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 13:10:02,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 13:10:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:02,139 INFO L225 Difference]: With dead ends: 58 [2020-10-13 13:10:02,139 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 13:10:02,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:10:02,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 13:10:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 13:10:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 13:10:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 13:10:02,211 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 13:10:02,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:02,211 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 13:10:02,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 13:10:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 13:10:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:10:02,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:02,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:02,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:10:02,233 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:02,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:02,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1312973782, now seen corresponding path program 1 times [2020-10-13 13:10:02,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:02,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930639378] [2020-10-13 13:10:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:03,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:10:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-13 13:10:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:10:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:10:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:10:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:03,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:03,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:03,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:10:03,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:10:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:03,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:03,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:03,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:10:03,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:10:03,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:10:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:10:03,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:03,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:10:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:03,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:03,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:10:03,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:03,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:10:03,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:10:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:10:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:03,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:03,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:10:03,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:10:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:10:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 13:10:03,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930639378] [2020-10-13 13:10:03,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:03,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:10:03,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949622754] [2020-10-13 13:10:03,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:10:03,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:03,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:10:03,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:10:03,789 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 6 states. [2020-10-13 13:10:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:03,979 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2020-10-13 13:10:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:10:03,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-13 13:10:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:03,981 INFO L225 Difference]: With dead ends: 50 [2020-10-13 13:10:03,981 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 13:10:03,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 13:10:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-10-13 13:10:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 13:10:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 13:10:03,992 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 32 [2020-10-13 13:10:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:03,992 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 13:10:03,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:10:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 13:10:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 13:10:03,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:03,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:03,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:10:03,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2020573253, now seen corresponding path program 1 times [2020-10-13 13:10:03,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:03,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204873087] [2020-10-13 13:10:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:04,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:06,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 13:10:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2927 [2020-10-13 13:10:06,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:10:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:10:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:10:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:06,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:06,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:06,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:06,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:10:06,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:06,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:06,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:06,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:10:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:06,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:10:06,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:10:06,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:10:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:10:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 13:10:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:07,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:10:07,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:10:07,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:07,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:10:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:07,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:10:07,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:07,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:10:07,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:07,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 13:10:07,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204873087] [2020-10-13 13:10:07,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:07,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:10:07,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009844900] [2020-10-13 13:10:07,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:10:07,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:07,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:10:07,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:10:07,062 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-10-13 13:10:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:07,279 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2020-10-13 13:10:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:10:07,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-13 13:10:07,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:07,282 INFO L225 Difference]: With dead ends: 55 [2020-10-13 13:10:07,282 INFO L226 Difference]: Without dead ends: 35 [2020-10-13 13:10:07,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:10:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-13 13:10:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-13 13:10:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 13:10:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-13 13:10:07,291 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 44 [2020-10-13 13:10:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:07,292 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-13 13:10:07,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:10:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-13 13:10:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 13:10:07,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:07,294 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:07,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:10:07,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash -543091744, now seen corresponding path program 2 times [2020-10-13 13:10:07,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:07,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341438723] [2020-10-13 13:10:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:09,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:12,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 13:10:12,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:10:12,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:10:12,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:10:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:10:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:10:12,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:12,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:12,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:12,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:10:12,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:10:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:10:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:12,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:12,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:10:12,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:10:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:12,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:12,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:12,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:10:12,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:12,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:10:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:12,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:12,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 13:10:12,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:10:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:10:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 13:10:12,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341438723] [2020-10-13 13:10:12,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:12,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:10:12,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144814362] [2020-10-13 13:10:12,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:10:12,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:12,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:10:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:10:12,590 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 8 states. [2020-10-13 13:10:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:12,850 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-10-13 13:10:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:10:12,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-13 13:10:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:12,852 INFO L225 Difference]: With dead ends: 53 [2020-10-13 13:10:12,853 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 13:10:12,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:12,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 13:10:12,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 13:10:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:10:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-13 13:10:12,867 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 56 [2020-10-13 13:10:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:12,870 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-13 13:10:12,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:10:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-13 13:10:12,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 13:10:12,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:12,872 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 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 13:10:12,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:10:12,873 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:12,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:12,873 INFO L82 PathProgramCache]: Analyzing trace with hash 423524670, now seen corresponding path program 1 times [2020-10-13 13:10:12,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:12,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087737330] [2020-10-13 13:10:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:17,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:17,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:17,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 13:10:17,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:10:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:10:17,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:10:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:10:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:10:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:18,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:18,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:18,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:10:18,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:10:18,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:10:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:18,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 13:10:18,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:10:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:10:18,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:10:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:18,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:18,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:18,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 13:10:18,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:10:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:10:18,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:18,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:10:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:18,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:10:18,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:18,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:10:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 13:10:18,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087737330] [2020-10-13 13:10:18,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:18,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:10:18,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058577425] [2020-10-13 13:10:18,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:10:18,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:18,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:10:18,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:10:18,724 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 14 states. [2020-10-13 13:10:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:19,516 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-10-13 13:10:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:10:19,516 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-13 13:10:19,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:19,521 INFO L225 Difference]: With dead ends: 79 [2020-10-13 13:10:19,522 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 13:10:19,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:10:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 13:10:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2020-10-13 13:10:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 13:10:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-13 13:10:19,547 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 58 [2020-10-13 13:10:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:19,548 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-13 13:10:19,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:10:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-13 13:10:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 13:10:19,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:19,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 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 13:10:19,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:10:19,556 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:19,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1809728064, now seen corresponding path program 1 times [2020-10-13 13:10:19,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:19,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32203496] [2020-10-13 13:10:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:22,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:23,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:23,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 13:10:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:10:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:10:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 13:10:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:10:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:10:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:29,258 WARN L193 SmtUtils]: Spent 4.42 s on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-13 13:10:29,459 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2020-10-13 13:10:29,608 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-13 13:10:29,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:29,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:29,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:29,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:10:29,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:29,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:10:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-13 13:10:30,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:10:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:10:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:30,686 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-13 13:10:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:10:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:30,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:30,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:30,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:30,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 13:10:30,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:10:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:10:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0