/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=0.4 --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/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:03,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:03,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:03,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:03,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:03,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:03,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:03,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:03,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:03,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:03,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:03,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:03,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:03,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:03,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:03,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:03,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:03,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:03,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:03,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:03,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:03,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:03,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:03,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:03,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:03,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:03,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:03,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:03,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:03,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:03,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:03,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:03,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:03,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:03,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:03,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:03,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:03,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:03,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:03,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:03,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:03,627 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 05:38:03,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:03,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:03,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:03,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:03,655 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:03,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:03,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:03,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:03,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:03,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:03,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:03,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:03,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:03,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:03,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:03,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:03,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:03,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:03,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:03,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:03,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:03,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:03,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:03,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:03,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:03,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:03,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:03,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:03,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:03,660 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:38:04,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:04,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:04,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:04,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:04,137 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:04,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 05:38:04,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/444860947/a9b5a809770649fbab170ecc644ff0ef/FLAG5b9e7f81f [2020-09-25 05:38:04,872 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:04,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 05:38:04,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/444860947/a9b5a809770649fbab170ecc644ff0ef/FLAG5b9e7f81f [2020-09-25 05:38:05,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/444860947/a9b5a809770649fbab170ecc644ff0ef [2020-09-25 05:38:05,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:05,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:05,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:05,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:05,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:05,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:05,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283e1fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05, skipping insertion in model container [2020-09-25 05:38:05,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:05,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:05,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:05,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:05,726 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:05,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:05,994 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:05,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05 WrapperNode [2020-09-25 05:38:05,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:05,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:05,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:05,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:06,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:06,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:06,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:06,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:06,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:06,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:06,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (1/1) ... [2020-09-25 05:38:06,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:06,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:06,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:06,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:06,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (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 05:38:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:07,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:07,693 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:07,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:07 BoogieIcfgContainer [2020-09-25 05:38:07,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:07,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:07,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:07,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:07,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:05" (1/3) ... [2020-09-25 05:38:07,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:07, skipping insertion in model container [2020-09-25 05:38:07,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:05" (2/3) ... [2020-09-25 05:38:07,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:07, skipping insertion in model container [2020-09-25 05:38:07,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:07" (3/3) ... [2020-09-25 05:38:07,715 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 05:38:07,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:07,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:07,765 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:07,803 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:07,803 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:07,803 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:07,804 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:07,804 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:07,804 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:07,804 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:07,804 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 05:38:07,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:07,851 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] [2020-09-25 05:38:07,852 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 05:38:07,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:07,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808696751] [2020-09-25 05:38:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:09,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 05:38:09,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-25 05:38:09,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:09,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 05:38:09,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:38:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:09,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:09,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:38:09,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:09,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:09,280 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 05:38:09,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808696751] [2020-09-25 05:38:09,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:09,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:09,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697377696] [2020-09-25 05:38:09,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:09,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:09,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:09,313 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:11,639 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 05:38:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:11,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 05:38:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:11,665 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 05:38:11,666 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 05:38:11,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 05:38:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 05:38:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 05:38:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 05:38:11,782 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 64 [2020-09-25 05:38:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:11,783 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 05:38:11,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 05:38:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 05:38:11,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:11,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:11,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:11,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:11,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:11,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1704622095, now seen corresponding path program 1 times [2020-09-25 05:38:11,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:11,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000185096] [2020-09-25 05:38:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:15,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 05:38:15,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:38:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3925 [2020-09-25 05:38:15,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:15,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:15,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:38:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 05:38:15,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-09-25 05:38:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:15,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:15,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:38:15,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:15,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:16,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:16,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:16,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 05:38:16,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:16,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:38:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:16,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000185096] [2020-09-25 05:38:16,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:16,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:16,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989200309] [2020-09-25 05:38:16,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:16,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:16,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:16,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:16,207 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 05:38:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:17,997 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 05:38:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:17,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 05:38:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:18,005 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 05:38:18,006 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 05:38:18,009 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 05:38:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 05:38:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 05:38:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 05:38:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 05:38:18,052 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 143 [2020-09-25 05:38:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:18,053 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 05:38:18,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 05:38:18,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 05:38:18,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:18,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:18,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:18,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:18,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:18,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1280909557, now seen corresponding path program 1 times [2020-09-25 05:38:18,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:18,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777560280] [2020-09-25 05:38:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:19,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:19,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 05:38:19,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:19,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-09-25 05:38:19,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:19,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:19,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:19,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 05:38:19,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:38:19,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:19,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:19,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:19,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:19,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:19,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:19,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:19,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:19,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:19,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:38:19,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:19,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 05:38:19,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:19,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:38:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:20,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777560280] [2020-09-25 05:38:20,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:20,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:20,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061701604] [2020-09-25 05:38:20,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:20,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:20,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:20,017 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 6 states. [2020-09-25 05:38:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:22,659 INFO L93 Difference]: Finished difference Result 3013 states and 4181 transitions. [2020-09-25 05:38:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:22,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2020-09-25 05:38:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:22,674 INFO L225 Difference]: With dead ends: 3013 [2020-09-25 05:38:22,674 INFO L226 Difference]: Without dead ends: 2144 [2020-09-25 05:38:22,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-09-25 05:38:22,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2102. [2020-09-25 05:38:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2020-09-25 05:38:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2759 transitions. [2020-09-25 05:38:22,753 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2759 transitions. Word has length 155 [2020-09-25 05:38:22,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:22,754 INFO L479 AbstractCegarLoop]: Abstraction has 2102 states and 2759 transitions. [2020-09-25 05:38:22,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2759 transitions. [2020-09-25 05:38:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 05:38:22,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:22,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:22,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:22,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:22,764 INFO L82 PathProgramCache]: Analyzing trace with hash 522738282, now seen corresponding path program 1 times [2020-09-25 05:38:22,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:22,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575405722] [2020-09-25 05:38:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:27,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 05:38:27,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:38:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-09-25 05:38:27,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:27,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:38:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:38:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:27,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:27,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:27,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:27,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:27,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:28,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:28,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:28,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:38:28,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:28,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:38:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:28,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:38:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:28,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:38:28,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:28,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 05:38:28,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:28,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:38:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:28,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575405722] [2020-09-25 05:38:28,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:28,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:38:28,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280528013] [2020-09-25 05:38:28,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:28,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:28,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:28,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:28,440 INFO L87 Difference]: Start difference. First operand 2102 states and 2759 transitions. Second operand 8 states. [2020-09-25 05:38:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:31,653 INFO L93 Difference]: Finished difference Result 4675 states and 6211 transitions. [2020-09-25 05:38:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:38:31,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 05:38:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:31,671 INFO L225 Difference]: With dead ends: 4675 [2020-09-25 05:38:31,671 INFO L226 Difference]: Without dead ends: 1770 [2020-09-25 05:38:31,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:38:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2020-09-25 05:38:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1756. [2020-09-25 05:38:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1756 states. [2020-09-25 05:38:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2135 transitions. [2020-09-25 05:38:31,744 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2135 transitions. Word has length 236 [2020-09-25 05:38:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:31,745 INFO L479 AbstractCegarLoop]: Abstraction has 1756 states and 2135 transitions. [2020-09-25 05:38:31,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2135 transitions. [2020-09-25 05:38:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-25 05:38:31,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:31,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:31,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:31,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:31,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1039864954, now seen corresponding path program 1 times [2020-09-25 05:38:31,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:31,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477948583] [2020-09-25 05:38:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:31,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:36,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:36,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-09-25 05:38:36,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:38:36,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:36,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:38:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 05:38:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:36,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:36,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:36,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:36,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:36,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:36,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:36,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:36,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:36,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:38:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:37,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:37,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 05:38:37,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:37,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:37,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:38:37,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:37,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:38:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:37,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:37,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:37,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 05:38:37,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:37,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 05:38:37,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:37,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 05:38:37,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:37,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477948583] [2020-09-25 05:38:37,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:37,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:38:37,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066334795] [2020-09-25 05:38:37,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:37,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:37,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:37,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:37,851 INFO L87 Difference]: Start difference. First operand 1756 states and 2135 transitions. Second operand 8 states. [2020-09-25 05:38:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:40,782 INFO L93 Difference]: Finished difference Result 5461 states and 7199 transitions. [2020-09-25 05:38:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:38:40,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 289 [2020-09-25 05:38:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:40,807 INFO L225 Difference]: With dead ends: 5461 [2020-09-25 05:38:40,807 INFO L226 Difference]: Without dead ends: 3720 [2020-09-25 05:38:40,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:38:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2020-09-25 05:38:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 3177. [2020-09-25 05:38:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2020-09-25 05:38:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 3962 transitions. [2020-09-25 05:38:40,977 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 3962 transitions. Word has length 289 [2020-09-25 05:38:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:40,979 INFO L479 AbstractCegarLoop]: Abstraction has 3177 states and 3962 transitions. [2020-09-25 05:38:40,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 3962 transitions. [2020-09-25 05:38:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-25 05:38:40,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:41,002 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:38:41,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:41,005 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:41,007 INFO L82 PathProgramCache]: Analyzing trace with hash 622861221, now seen corresponding path program 1 times [2020-09-25 05:38:41,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:41,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471266745] [2020-09-25 05:38:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:46,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-09-25 05:38:46,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:38:46,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:46,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:38:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 05:38:46,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:46,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:46,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:46,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:46,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:46,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:46,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:46,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:46,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:46,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:38:46,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:46,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 05:38:46,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:46,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:38:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 05:38:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:46,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:46,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 05:38:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 05:38:46,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:46,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 05:38:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:46,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471266745] [2020-09-25 05:38:46,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:46,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:46,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599093978] [2020-09-25 05:38:46,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:46,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:46,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:46,787 INFO L87 Difference]: Start difference. First operand 3177 states and 3962 transitions. Second operand 7 states. [2020-09-25 05:38:49,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:49,392 INFO L93 Difference]: Finished difference Result 6854 states and 8682 transitions. [2020-09-25 05:38:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:38:49,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-09-25 05:38:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:49,412 INFO L225 Difference]: With dead ends: 6854 [2020-09-25 05:38:49,412 INFO L226 Difference]: Without dead ends: 3842 [2020-09-25 05:38:49,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:38:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2020-09-25 05:38:49,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3804. [2020-09-25 05:38:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3804 states. [2020-09-25 05:38:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 4738 transitions. [2020-09-25 05:38:49,522 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 4738 transitions. Word has length 296 [2020-09-25 05:38:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:49,523 INFO L479 AbstractCegarLoop]: Abstraction has 3804 states and 4738 transitions. [2020-09-25 05:38:49,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 4738 transitions. [2020-09-25 05:38:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-09-25 05:38:49,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:49,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:49,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:38:49,538 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:49,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1564839767, now seen corresponding path program 1 times [2020-09-25 05:38:49,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:49,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208038379] [2020-09-25 05:38:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking...