/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:26:24,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:26:24,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:26:24,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:26:24,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:26:24,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:26:24,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:26:24,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:26:24,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:26:24,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:26:24,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:26:24,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:26:24,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:26:24,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:26:24,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:26:24,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:26:24,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:26:24,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:26:24,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:26:24,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:26:24,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:26:24,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:26:24,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:26:24,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:26:24,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:26:24,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:26:24,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:26:24,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:26:24,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:26:24,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:26:24,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:26:24,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:26:24,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:26:24,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:26:24,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:26:24,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:26:24,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:26:24,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:26:24,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:26:24,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:26:24,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:26:24,250 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 [2020-09-25 04:26:24,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:26:24,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:26:24,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:26:24,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:26:24,302 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:26:24,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:26:24,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:26:24,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:26:24,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:26:24,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:26:24,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:26:24,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:26:24,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:26:24,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:26:24,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:26:24,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:26:24,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:26:24,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:26:24,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:26:24,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:26:24,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:26:24,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:24,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:26:24,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:26:24,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:26:24,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:26:24,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:26:24,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:26:24,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:26:24,310 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:26:24,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:26:24,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:26:24,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:26:24,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:26:24,787 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:26:24,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-25 04:26:24,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d70ac8d8/1ed6d68dc50345edb2c6d3c123dc91ac/FLAGdfa0ec008 [2020-09-25 04:26:25,512 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:26:25,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label01.c [2020-09-25 04:26:25,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d70ac8d8/1ed6d68dc50345edb2c6d3c123dc91ac/FLAGdfa0ec008 [2020-09-25 04:26:25,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d70ac8d8/1ed6d68dc50345edb2c6d3c123dc91ac [2020-09-25 04:26:25,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:26:25,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:26:25,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:25,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:26:25,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:26:25,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25, skipping insertion in model container [2020-09-25 04:26:25,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:26:25,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:26:26,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:26,330 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:26:26,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:26,613 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:26:26,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26 WrapperNode [2020-09-25 04:26:26,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:26,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:26:26,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:26:26,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:26:26,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (1/1) ... [2020-09-25 04:26:26,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (1/1) ... [2020-09-25 04:26:26,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (1/1) ... [2020-09-25 04:26:26,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (1/1) ... [2020-09-25 04:26:26,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (1/1) ... [2020-09-25 04:26:26,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (1/1) ... [2020-09-25 04:26:26,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (1/1) ... [2020-09-25 04:26:26,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:26:26,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:26:26,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:26:26,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:26:26,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (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 [2020-09-25 04:26:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:26:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:26:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:26:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:26:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:26:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:26:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:26:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:26:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:26:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:26:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:26:28,236 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:26:28,236 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:26:28,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:28 BoogieIcfgContainer [2020-09-25 04:26:28,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:26:28,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:26:28,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:26:28,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:26:28,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:26:25" (1/3) ... [2020-09-25 04:26:28,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:28, skipping insertion in model container [2020-09-25 04:26:28,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:26" (2/3) ... [2020-09-25 04:26:28,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:28, skipping insertion in model container [2020-09-25 04:26:28,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:28" (3/3) ... [2020-09-25 04:26:28,259 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label01.c [2020-09-25 04:26:28,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:26:28,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:26:28,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:26:28,340 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:26:28,341 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:26:28,341 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:26:28,341 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:26:28,341 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:26:28,341 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:26:28,342 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:26:28,342 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:26:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:26:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 04:26:28,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:28,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:28,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:28,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1587967458, now seen corresponding path program 1 times [2020-09-25 04:26:28,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:28,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 04:26:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:33,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 04:26:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 04:26:33,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:33,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:26:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 04:26:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:26:33,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:34,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:34,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:34,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:26:34,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:34,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:26:34,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:34,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 04:26:34,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:34,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:26:34,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977257932] [2020-09-25 04:26:34,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:34,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:34,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:34,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:34,138 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 04:26:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:37,025 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:26:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:37,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 04:26:37,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:37,062 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:26:37,062 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:26:37,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:26:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:26:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:26:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:26:37,184 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 139 [2020-09-25 04:26:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:37,185 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:26:37,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:26:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 04:26:37,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:37,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:37,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:37,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 366034702, now seen corresponding path program 1 times [2020-09-25 04:26:37,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:37,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011741147] [2020-09-25 04:26:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:37,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:39,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 04:26:42,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:26:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:26:42,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:26:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 04:26:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:42,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:42,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:42,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:42,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:26:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:26:42,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:42,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:26:42,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:26:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:42,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011741147] [2020-09-25 04:26:42,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:42,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:42,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137768645] [2020-09-25 04:26:42,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:42,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:42,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:42,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:42,554 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 04:26:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:44,606 INFO L93 Difference]: Finished difference Result 1623 states and 2082 transitions. [2020-09-25 04:26:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:44,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 04:26:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:44,614 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 04:26:44,614 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 04:26:44,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 04:26:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 968. [2020-09-25 04:26:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-25 04:26:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1232 transitions. [2020-09-25 04:26:44,667 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1232 transitions. Word has length 157 [2020-09-25 04:26:44,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:44,668 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1232 transitions. [2020-09-25 04:26:44,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:44,668 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1232 transitions. [2020-09-25 04:26:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 04:26:44,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:44,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:44,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:44,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:44,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:44,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1889998438, now seen corresponding path program 1 times [2020-09-25 04:26:44,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:44,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572978962] [2020-09-25 04:26:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:49,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:49,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 04:26:49,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:49,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 04:26:49,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:49,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 04:26:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 04:26:49,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:49,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:49,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:49,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:49,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:49,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:49,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:26:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:49,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:49,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:26:49,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:26:49,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:49,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:26:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:50,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572978962] [2020-09-25 04:26:50,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:50,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:50,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48280215] [2020-09-25 04:26:50,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:50,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:50,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:50,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:50,024 INFO L87 Difference]: Start difference. First operand 968 states and 1232 transitions. Second operand 5 states. [2020-09-25 04:26:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:52,105 INFO L93 Difference]: Finished difference Result 2422 states and 3187 transitions. [2020-09-25 04:26:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:52,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-25 04:26:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:52,116 INFO L225 Difference]: With dead ends: 2422 [2020-09-25 04:26:52,116 INFO L226 Difference]: Without dead ends: 1476 [2020-09-25 04:26:52,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:52,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-09-25 04:26:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1426. [2020-09-25 04:26:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-09-25 04:26:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1751 transitions. [2020-09-25 04:26:52,170 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1751 transitions. Word has length 177 [2020-09-25 04:26:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:52,171 INFO L479 AbstractCegarLoop]: Abstraction has 1426 states and 1751 transitions. [2020-09-25 04:26:52,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1751 transitions. [2020-09-25 04:26:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 04:26:52,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:52,181 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:52,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:52,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1392969778, now seen corresponding path program 1 times [2020-09-25 04:26:52,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:52,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849919964] [2020-09-25 04:26:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 04:26:57,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 04:26:57,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 04:26:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 04:26:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:57,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:26:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:26:57,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:26:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:57,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:26:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:26:57,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:26:57,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:26:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 04:26:57,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849919964] [2020-09-25 04:26:57,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:57,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:57,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24789567] [2020-09-25 04:26:57,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:57,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:57,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:57,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:57,603 INFO L87 Difference]: Start difference. First operand 1426 states and 1751 transitions. Second operand 5 states. [2020-09-25 04:26:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:59,709 INFO L93 Difference]: Finished difference Result 3476 states and 4457 transitions. [2020-09-25 04:26:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:59,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-09-25 04:26:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:59,726 INFO L225 Difference]: With dead ends: 3476 [2020-09-25 04:26:59,727 INFO L226 Difference]: Without dead ends: 2072 [2020-09-25 04:26:59,733 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 [2020-09-25 04:26:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2020-09-25 04:26:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2034. [2020-09-25 04:26:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2034 states. [2020-09-25 04:26:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2499 transitions. [2020-09-25 04:26:59,795 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2499 transitions. Word has length 196 [2020-09-25 04:26:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:59,796 INFO L479 AbstractCegarLoop]: Abstraction has 2034 states and 2499 transitions. [2020-09-25 04:26:59,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2499 transitions. [2020-09-25 04:26:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 04:26:59,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:59,806 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:59,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:59,806 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:59,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:59,807 INFO L82 PathProgramCache]: Analyzing trace with hash 546258273, now seen corresponding path program 1 times [2020-09-25 04:26:59,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:59,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537281745] [2020-09-25 04:26:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:01,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 04:27:04,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:27:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:27:04,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 04:27:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 04:27:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:04,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:05,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:05,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:05,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:27:05,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:05,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:05,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:27:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:05,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:27:05,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:27:05,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:05,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:27:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:27:05,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537281745] [2020-09-25 04:27:05,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:05,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:05,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144695724] [2020-09-25 04:27:05,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:05,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:05,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:05,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:05,108 INFO L87 Difference]: Start difference. First operand 2034 states and 2499 transitions. Second operand 5 states. [2020-09-25 04:27:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:07,255 INFO L93 Difference]: Finished difference Result 4680 states and 5952 transitions. [2020-09-25 04:27:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:07,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-09-25 04:27:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:07,275 INFO L225 Difference]: With dead ends: 4680 [2020-09-25 04:27:07,275 INFO L226 Difference]: Without dead ends: 2668 [2020-09-25 04:27:07,284 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 [2020-09-25 04:27:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2020-09-25 04:27:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2644. [2020-09-25 04:27:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-09-25 04:27:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3205 transitions. [2020-09-25 04:27:07,372 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3205 transitions. Word has length 203 [2020-09-25 04:27:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:07,373 INFO L479 AbstractCegarLoop]: Abstraction has 2644 states and 3205 transitions. [2020-09-25 04:27:07,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3205 transitions. [2020-09-25 04:27:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 04:27:07,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:07,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:27:07,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:27:07,387 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:07,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1688950377, now seen corresponding path program 1 times [2020-09-25 04:27:07,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:07,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120344268] [2020-09-25 04:27:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 04:27:12,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:27:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:27:12,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-09-25 04:27:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:27:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:12,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:12,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:27:12,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:12,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:27:12,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:27:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:12,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 04:27:12,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 04:27:12,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:27:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:27:12,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:27:12,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120344268] [2020-09-25 04:27:12,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:12,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:27:12,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098293640] [2020-09-25 04:27:12,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:12,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:12,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:12,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:12,692 INFO L87 Difference]: Start difference. First operand 2644 states and 3205 transitions. Second operand 5 states. [2020-09-25 04:27:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:14,643 INFO L93 Difference]: Finished difference Result 6320 states and 7778 transitions. [2020-09-25 04:27:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:14,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-09-25 04:27:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:14,644 INFO L225 Difference]: With dead ends: 6320 [2020-09-25 04:27:14,645 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:27:14,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:27:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:27:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:27:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:27:14,662 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 246 [2020-09-25 04:27:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:14,662 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:27:14,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:27:14,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:27:14,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:27:14,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:27:15,434 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 19 [2020-09-25 04:27:15,583 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 19