/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:38:22,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:38:22,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:38:22,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:38:22,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:38:22,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:38:22,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:38:22,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:38:22,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:38:22,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:38:22,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:38:22,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:38:22,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:38:22,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:38:22,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:38:22,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:38:22,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:38:22,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:38:22,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:38:22,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:38:22,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:38:22,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:38:22,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:38:22,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:38:22,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:38:22,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:38:22,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:38:22,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:38:22,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:38:22,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:38:22,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:38:22,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:38:22,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:38:22,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:38:22,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:38:22,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:38:22,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:38:22,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:38:22,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:38:22,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:38:22,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:38:22,254 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 14:38:22,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:38:22,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:38:22,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:38:22,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:38:22,281 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:38:22,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:38:22,282 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:38:22,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:38:22,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:38:22,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:38:22,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:38:22,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:38:22,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:38:22,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:38:22,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:38:22,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:38:22,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:38:22,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:38:22,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:38:22,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:38:22,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:38:22,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:38:22,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:38:22,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:38:22,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:38:22,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:38:22,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:38:22,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:38:22,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:38:22,286 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:38:22,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:38:22,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:38:22,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:38:22,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:38:22,770 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:38:22,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 14:38:22,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c20921751/35771eeef7d64a899bb7c2ab39e19d10/FLAGa35eee059 [2020-09-25 14:38:23,524 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:38:23,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 14:38:23,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c20921751/35771eeef7d64a899bb7c2ab39e19d10/FLAGa35eee059 [2020-09-25 14:38:23,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c20921751/35771eeef7d64a899bb7c2ab39e19d10 [2020-09-25 14:38:23,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:38:23,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:38:23,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:38:23,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:38:23,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:38:23,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:38:23" (1/1) ... [2020-09-25 14:38:23,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:23, skipping insertion in model container [2020-09-25 14:38:23,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:38:23" (1/1) ... [2020-09-25 14:38:23,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:38:23,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:38:24,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:38:24,317 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:38:24,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:38:24,572 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:38:24,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24 WrapperNode [2020-09-25 14:38:24,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:38:24,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:38:24,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:38:24,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:38:24,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (1/1) ... [2020-09-25 14:38:24,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:38:24,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:38:24,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:38:24,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:38:24,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (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 14:38:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:38:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:38:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:38:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:38:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:38:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:38:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:38:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:38:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:38:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:38:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:38:26,170 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:38:26,170 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:38:26,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:38:26 BoogieIcfgContainer [2020-09-25 14:38:26,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:38:26,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:38:26,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:38:26,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:38:26,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:38:23" (1/3) ... [2020-09-25 14:38:26,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:38:26, skipping insertion in model container [2020-09-25 14:38:26,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:38:24" (2/3) ... [2020-09-25 14:38:26,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:38:26, skipping insertion in model container [2020-09-25 14:38:26,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:38:26" (3/3) ... [2020-09-25 14:38:26,197 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-09-25 14:38:26,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:38:26,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:38:26,241 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:38:26,276 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:38:26,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:38:26,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:38:26,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:38:26,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:38:26,277 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:38:26,277 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:38:26,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:38:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:38:26,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 14:38:26,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:26,334 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] [2020-09-25 14:38:26,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:26,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:26,343 INFO L82 PathProgramCache]: Analyzing trace with hash -299401006, now seen corresponding path program 1 times [2020-09-25 14:38:26,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:26,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 14:38:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:31,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 14:38:31,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 14:38:31,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:31,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:31,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:31,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:38:31,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:38:31,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:38:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:31,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:31,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:31,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:38:31,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:31,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:38:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:31,876 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 14:38:31,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 14:38:31,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:38:31,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:38:31,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451789543] [2020-09-25 14:38:31,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:38:31,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:31,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:38:31,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:38:31,909 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:38:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:34,200 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 14:38:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:38:34,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-09-25 14:38:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:34,237 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 14:38:34,238 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 14:38:34,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 14:38:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 14:38:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 14:38:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 14:38:34,360 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 119 [2020-09-25 14:38:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:34,361 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 14:38:34,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:38:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 14:38:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 14:38:34,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:34,372 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:38:34,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:38:34,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:34,373 INFO L82 PathProgramCache]: Analyzing trace with hash -290925319, now seen corresponding path program 1 times [2020-09-25 14:38:34,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:34,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820101580] [2020-09-25 14:38:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:35,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:39,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:39,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 14:38:39,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:38:39,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:38:39,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:39,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:38:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:38:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:39,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:39,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:39,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:39,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:39,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:39,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 14:38:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:38:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:39,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:39,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:38:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:38:39,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:39,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:38:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:39,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820101580] [2020-09-25 14:38:39,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:39,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:39,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599899623] [2020-09-25 14:38:39,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:39,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:39,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:39,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:39,651 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 14:38:41,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:41,763 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-25 14:38:41,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:41,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 14:38:41,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:41,772 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 14:38:41,772 INFO L226 Difference]: Without dead ends: 801 [2020-09-25 14:38:41,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-25 14:38:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-25 14:38:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-25 14:38:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-25 14:38:41,835 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 136 [2020-09-25 14:38:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:41,836 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-25 14:38:41,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-25 14:38:41,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 14:38:41,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:41,844 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:38:41,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:41,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:41,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:41,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1202844496, now seen corresponding path program 1 times [2020-09-25 14:38:41,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:41,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751793719] [2020-09-25 14:38:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:42,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:44,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:45,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:46,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:46,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 14:38:46,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:38:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:38:46,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:46,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:38:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:38:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:46,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:47,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:38:47,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:38:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:47,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:47,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:38:47,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:38:47,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:47,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:38:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:47,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751793719] [2020-09-25 14:38:47,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:47,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:47,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28898307] [2020-09-25 14:38:47,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:47,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:47,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:47,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:47,085 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-25 14:38:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:49,156 INFO L93 Difference]: Finished difference Result 1709 states and 2048 transitions. [2020-09-25 14:38:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:49,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 14:38:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:49,164 INFO L225 Difference]: With dead ends: 1709 [2020-09-25 14:38:49,164 INFO L226 Difference]: Without dead ends: 955 [2020-09-25 14:38:49,167 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 14:38:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-25 14:38:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-09-25 14:38:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-09-25 14:38:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1073 transitions. [2020-09-25 14:38:49,193 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1073 transitions. Word has length 141 [2020-09-25 14:38:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:49,193 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1073 transitions. [2020-09-25 14:38:49,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1073 transitions. [2020-09-25 14:38:49,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 14:38:49,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:49,198 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:38:49,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:49,198 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1297006145, now seen corresponding path program 1 times [2020-09-25 14:38:49,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:49,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758385410] [2020-09-25 14:38:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:49,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:54,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:54,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 14:38:54,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 14:38:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:54,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 14:38:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:38:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:54,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:54,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:54,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:54,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:54,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:54,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:38:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:54,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:54,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:38:54,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:38:54,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:54,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:54,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:38:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:54,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758385410] [2020-09-25 14:38:54,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:54,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:54,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566472186] [2020-09-25 14:38:54,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:54,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:54,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:54,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:54,543 INFO L87 Difference]: Start difference. First operand 929 states and 1073 transitions. Second operand 5 states. [2020-09-25 14:38:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:56,480 INFO L93 Difference]: Finished difference Result 2451 states and 2916 transitions. [2020-09-25 14:38:56,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:56,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 14:38:56,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:56,489 INFO L225 Difference]: With dead ends: 2451 [2020-09-25 14:38:56,490 INFO L226 Difference]: Without dead ends: 1544 [2020-09-25 14:38:56,495 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 14:38:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-09-25 14:38:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1382. [2020-09-25 14:38:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2020-09-25 14:38:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1657 transitions. [2020-09-25 14:38:56,579 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1657 transitions. Word has length 148 [2020-09-25 14:38:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:56,583 INFO L479 AbstractCegarLoop]: Abstraction has 1382 states and 1657 transitions. [2020-09-25 14:38:56,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1657 transitions. [2020-09-25 14:38:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 14:38:56,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:56,590 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:56,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:56,591 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:56,591 INFO L82 PathProgramCache]: Analyzing trace with hash 92363882, now seen corresponding path program 1 times [2020-09-25 14:38:56,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:56,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392209140] [2020-09-25 14:38:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:59,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:01,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:01,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 14:39:01,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:39:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 14:39:01,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:01,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 14:39:01,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:39:01,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:01,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:01,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:01,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:01,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:39:01,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:01,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:01,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:01,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:01,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:01,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:39:01,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:01,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:01,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:01,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:39:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:01,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:01,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:01,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:39:01,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:39:01,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:01,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:01,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:01,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:01,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:39:01,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 14:39:01,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392209140] [2020-09-25 14:39:01,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:01,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:39:01,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437126135] [2020-09-25 14:39:01,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:39:01,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:01,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:39:01,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:39:01,951 INFO L87 Difference]: Start difference. First operand 1382 states and 1657 transitions. Second operand 5 states. [2020-09-25 14:39:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:04,011 INFO L93 Difference]: Finished difference Result 3082 states and 3833 transitions. [2020-09-25 14:39:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:39:04,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-09-25 14:39:04,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:04,022 INFO L225 Difference]: With dead ends: 3082 [2020-09-25 14:39:04,022 INFO L226 Difference]: Without dead ends: 1722 [2020-09-25 14:39:04,027 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 14:39:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-09-25 14:39:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1686. [2020-09-25 14:39:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2020-09-25 14:39:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2031 transitions. [2020-09-25 14:39:04,098 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2031 transitions. Word has length 188 [2020-09-25 14:39:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:04,099 INFO L479 AbstractCegarLoop]: Abstraction has 1686 states and 2031 transitions. [2020-09-25 14:39:04,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:39:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2031 transitions. [2020-09-25 14:39:04,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 14:39:04,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:04,107 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:39:04,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:39:04,108 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:04,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:04,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1708323310, now seen corresponding path program 1 times [2020-09-25 14:39:04,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:04,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551052115] [2020-09-25 14:39:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:04,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:09,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 14:39:09,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:39:09,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:39:09,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:09,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 14:39:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:39:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:09,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:09,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:09,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:39:09,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:09,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:09,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:09,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:39:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:09,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:39:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:09,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:09,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:09,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:39:09,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:39:09,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:09,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 14:39:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 14:39:09,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551052115] [2020-09-25 14:39:09,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:09,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:39:09,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815247682] [2020-09-25 14:39:09,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:39:09,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:09,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:39:09,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:39:09,362 INFO L87 Difference]: Start difference. First operand 1686 states and 2031 transitions. Second operand 5 states. [2020-09-25 14:39:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:11,428 INFO L93 Difference]: Finished difference Result 4884 states and 5996 transitions. [2020-09-25 14:39:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:39:11,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-09-25 14:39:11,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:11,446 INFO L225 Difference]: With dead ends: 4884 [2020-09-25 14:39:11,446 INFO L226 Difference]: Without dead ends: 3220 [2020-09-25 14:39:11,453 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 14:39:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-09-25 14:39:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3015. [2020-09-25 14:39:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3015 states. [2020-09-25 14:39:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3614 transitions. [2020-09-25 14:39:11,554 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3614 transitions. Word has length 199 [2020-09-25 14:39:11,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:11,555 INFO L479 AbstractCegarLoop]: Abstraction has 3015 states and 3614 transitions. [2020-09-25 14:39:11,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:39:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3614 transitions. [2020-09-25 14:39:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 14:39:11,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:11,570 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:39:11,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:39:11,570 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:11,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1371800963, now seen corresponding path program 1 times [2020-09-25 14:39:11,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:11,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10274400] [2020-09-25 14:39:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:11,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:12,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:12,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking...