/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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:25,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:25,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:25,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:25,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:25,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:25,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:25,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:25,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:25,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:25,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:25,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:25,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:25,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:25,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:25,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:25,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:25,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:25,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:25,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:25,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:25,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:25,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:25,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:25,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:25,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:25,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:25,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:25,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:25,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:25,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:25,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:25,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:25,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:25,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:25,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:25,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:25,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:25,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:25,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:25,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:25,126 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 05:39:25,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:25,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:25,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:25,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:25,154 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:25,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:25,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:25,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:25,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:25,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:25,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:25,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:25,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:25,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:25,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:25,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:25,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:25,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:25,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:25,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:25,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:25,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:25,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:25,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:25,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:25,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:25,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:25,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:25,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:25,160 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 05:39:25,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:25,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:25,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:25,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:25,704 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:25,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 05:39:25,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bb9cca1/3d1e46bb240943799bf9da7cb3d31af7/FLAG00a5e06f6 [2020-09-25 05:39:26,502 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:26,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 05:39:26,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bb9cca1/3d1e46bb240943799bf9da7cb3d31af7/FLAG00a5e06f6 [2020-09-25 05:39:26,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bb9cca1/3d1e46bb240943799bf9da7cb3d31af7 [2020-09-25 05:39:26,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:26,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:26,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:26,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:26,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:26,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:26" (1/1) ... [2020-09-25 05:39:26,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:26, skipping insertion in model container [2020-09-25 05:39:26,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:26" (1/1) ... [2020-09-25 05:39:26,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:26,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:27,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:27,540 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:27,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:27,661 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:27,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27 WrapperNode [2020-09-25 05:39:27,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:27,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:27,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:27,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:27,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (1/1) ... [2020-09-25 05:39:27,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (1/1) ... [2020-09-25 05:39:27,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (1/1) ... [2020-09-25 05:39:27,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (1/1) ... [2020-09-25 05:39:27,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (1/1) ... [2020-09-25 05:39:27,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (1/1) ... [2020-09-25 05:39:27,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (1/1) ... [2020-09-25 05:39:27,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:27,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:27,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:27,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:27,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (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 05:39:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:29,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:29,432 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:29,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:29 BoogieIcfgContainer [2020-09-25 05:39:29,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:29,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:29,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:29,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:29,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:26" (1/3) ... [2020-09-25 05:39:29,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:29, skipping insertion in model container [2020-09-25 05:39:29,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:27" (2/3) ... [2020-09-25 05:39:29,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:29, skipping insertion in model container [2020-09-25 05:39:29,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:29" (3/3) ... [2020-09-25 05:39:29,452 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 05:39:29,465 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:29,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:29,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:29,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:29,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:29,547 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:29,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:29,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:29,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:29,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:29,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 05:39:29,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:29,599 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] [2020-09-25 05:39:29,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:29,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:29,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 05:39:29,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:29,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 05:39:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:30,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:39:30,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-09-25 05:39:30,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:30,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:39:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:39:30,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:39:31,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:31,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:31,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:31,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:39:31,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:31,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:31,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:31,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:31,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:39:31,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:31,120 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 05:39:31,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 05:39:31,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:31,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:39:31,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959856163] [2020-09-25 05:39:31,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:31,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:31,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:31,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:31,154 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 05:39:34,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:34,449 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 05:39:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:39:34,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 05:39:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:34,489 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 05:39:34,489 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 05:39:34,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 05:39:34,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 05:39:34,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 05:39:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 05:39:34,637 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 05:39:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:34,638 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 05:39:34,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 05:39:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 05:39:34,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:34,647 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, 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] [2020-09-25 05:39:34,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:34,648 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 05:39:34,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:34,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024450105] [2020-09-25 05:39:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:37,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 05:39:37,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3082 [2020-09-25 05:39:37,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:37,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:37,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:37,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:39:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:37,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:37,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:39:37,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:37,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:37,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:38,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:38,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 05:39:38,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:38,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:39:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:38,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024450105] [2020-09-25 05:39:38,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:38,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:38,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470679381] [2020-09-25 05:39:38,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:38,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:38,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:38,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:38,187 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 5 states. [2020-09-25 05:39:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:39,917 INFO L93 Difference]: Finished difference Result 1762 states and 2316 transitions. [2020-09-25 05:39:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:39,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 05:39:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:39,928 INFO L225 Difference]: With dead ends: 1762 [2020-09-25 05:39:39,928 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 05:39:39,931 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 05:39:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 05:39:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-09-25 05:39:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 05:39:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1333 transitions. [2020-09-25 05:39:40,000 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1333 transitions. Word has length 148 [2020-09-25 05:39:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:40,003 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1333 transitions. [2020-09-25 05:39:40,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1333 transitions. [2020-09-25 05:39:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 05:39:40,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:40,021 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, 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] [2020-09-25 05:39:40,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:40,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash -379911190, now seen corresponding path program 1 times [2020-09-25 05:39:40,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:40,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980400754] [2020-09-25 05:39:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:40,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:41,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:41,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 05:39:41,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-09-25 05:39:41,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:41,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 05:39:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 05:39:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:41,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:41,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:41,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:41,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:41,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:41,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:41,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:41,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:39:41,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 05:39:41,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:41,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:41,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980400754] [2020-09-25 05:39:41,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:41,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:41,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481269915] [2020-09-25 05:39:41,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:41,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:41,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:41,828 INFO L87 Difference]: Start difference. First operand 1039 states and 1333 transitions. Second operand 5 states. [2020-09-25 05:39:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:43,658 INFO L93 Difference]: Finished difference Result 2538 states and 3407 transitions. [2020-09-25 05:39:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:43,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 05:39:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:43,669 INFO L225 Difference]: With dead ends: 2538 [2020-09-25 05:39:43,669 INFO L226 Difference]: Without dead ends: 1664 [2020-09-25 05:39:43,674 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 05:39:43,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-09-25 05:39:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1644. [2020-09-25 05:39:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-09-25 05:39:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2011 transitions. [2020-09-25 05:39:43,741 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2011 transitions. Word has length 160 [2020-09-25 05:39:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:43,742 INFO L479 AbstractCegarLoop]: Abstraction has 1644 states and 2011 transitions. [2020-09-25 05:39:43,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2011 transitions. [2020-09-25 05:39:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 05:39:43,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:43,754 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:43,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:43,755 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:43,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2020435647, now seen corresponding path program 1 times [2020-09-25 05:39:43,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:43,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280333628] [2020-09-25 05:39:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 05:39:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:39:48,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:48,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:48,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 05:39:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:48,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:48,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:48,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:48,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:48,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:49,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:49,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:49,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 05:39:49,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:49,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:39:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:39:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:49,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:49,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 05:39:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:49,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 05:39:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:49,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280333628] [2020-09-25 05:39:49,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:49,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:39:49,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230860035] [2020-09-25 05:39:49,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:39:49,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:49,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:39:49,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:49,369 INFO L87 Difference]: Start difference. First operand 1644 states and 2011 transitions. Second operand 8 states. [2020-09-25 05:39:52,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:52,466 INFO L93 Difference]: Finished difference Result 4441 states and 5813 transitions. [2020-09-25 05:39:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:39:52,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2020-09-25 05:39:52,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:52,490 INFO L225 Difference]: With dead ends: 4441 [2020-09-25 05:39:52,490 INFO L226 Difference]: Without dead ends: 2962 [2020-09-25 05:39:52,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:39:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-09-25 05:39:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2913. [2020-09-25 05:39:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2913 states. [2020-09-25 05:39:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3757 transitions. [2020-09-25 05:39:52,610 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3757 transitions. Word has length 237 [2020-09-25 05:39:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:52,610 INFO L479 AbstractCegarLoop]: Abstraction has 2913 states and 3757 transitions. [2020-09-25 05:39:52,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:39:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3757 transitions. [2020-09-25 05:39:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 05:39:52,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:52,618 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:52,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:52,618 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:52,619 INFO L82 PathProgramCache]: Analyzing trace with hash 878642836, now seen corresponding path program 1 times [2020-09-25 05:39:52,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:52,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251069604] [2020-09-25 05:39:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 05:39:57,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:39:57,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:39:57,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:57,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:39:57,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:39:57,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:57,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:57,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:39:57,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:39:57,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:57,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 05:39:57,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:39:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:58,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:58,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 05:39:58,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:58,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:58,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251069604] [2020-09-25 05:39:58,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:58,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:58,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439793717] [2020-09-25 05:39:58,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:58,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:58,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:58,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:58,254 INFO L87 Difference]: Start difference. First operand 2913 states and 3757 transitions. Second operand 7 states. [2020-09-25 05:40:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:00,575 INFO L93 Difference]: Finished difference Result 6515 states and 8781 transitions. [2020-09-25 05:40:00,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:40:00,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-09-25 05:40:00,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:00,601 INFO L225 Difference]: With dead ends: 6515 [2020-09-25 05:40:00,601 INFO L226 Difference]: Without dead ends: 3135 [2020-09-25 05:40:00,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:40:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2020-09-25 05:40:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2763. [2020-09-25 05:40:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2763 states. [2020-09-25 05:40:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3516 transitions. [2020-09-25 05:40:00,703 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3516 transitions. Word has length 241 [2020-09-25 05:40:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:00,703 INFO L479 AbstractCegarLoop]: Abstraction has 2763 states and 3516 transitions. [2020-09-25 05:40:00,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:40:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3516 transitions. [2020-09-25 05:40:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-25 05:40:00,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:00,711 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:00,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:00,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:00,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2070552790, now seen corresponding path program 1 times [2020-09-25 05:40:00,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:00,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332354961] [2020-09-25 05:40:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:00,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:05,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-09-25 05:40:05,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:40:05,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:05,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:40:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:40:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:05,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:05,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:05,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:40:05,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:05,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:05,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:05,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:06,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:06,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 05:40:06,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:06,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:40:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:06,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:40:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:06,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 05:40:06,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 05:40:06,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:06,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 05:40:06,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:06,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332354961] [2020-09-25 05:40:06,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:06,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:40:06,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249922656] [2020-09-25 05:40:06,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:40:06,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:06,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:40:06,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:06,743 INFO L87 Difference]: Start difference. First operand 2763 states and 3516 transitions. Second operand 8 states. [2020-09-25 05:40:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:09,136 INFO L93 Difference]: Finished difference Result 6617 states and 8669 transitions. [2020-09-25 05:40:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:40:09,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 277 [2020-09-25 05:40:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:09,157 INFO L225 Difference]: With dead ends: 6617 [2020-09-25 05:40:09,158 INFO L226 Difference]: Without dead ends: 3845 [2020-09-25 05:40:09,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:40:09,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2020-09-25 05:40:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3831. [2020-09-25 05:40:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3831 states. [2020-09-25 05:40:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3831 states to 3831 states and 4824 transitions. [2020-09-25 05:40:09,257 INFO L78 Accepts]: Start accepts. Automaton has 3831 states and 4824 transitions. Word has length 277 [2020-09-25 05:40:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:09,257 INFO L479 AbstractCegarLoop]: Abstraction has 3831 states and 4824 transitions. [2020-09-25 05:40:09,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:40:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3831 states and 4824 transitions. [2020-09-25 05:40:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-09-25 05:40:09,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:09,269 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:40:09,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:40:09,270 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:09,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:09,270 INFO L82 PathProgramCache]: Analyzing trace with hash -381976138, now seen corresponding path program 1 times [2020-09-25 05:40:09,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:09,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885423574] [2020-09-25 05:40:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:09,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking...