/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:23:14,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:23:14,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:23:14,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:23:14,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:23:14,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:23:14,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:23:14,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:23:14,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:23:14,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:23:14,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:23:14,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:23:14,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:23:14,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:23:14,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:23:14,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:23:14,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:23:14,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:23:14,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:23:14,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:23:14,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:23:14,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:23:14,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:23:14,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:23:14,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:23:14,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:23:14,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:23:14,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:23:14,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:23:14,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:23:14,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:23:14,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:23:14,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:23:14,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:23:14,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:23:14,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:23:14,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:23:14,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:23:14,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:23:14,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:23:14,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:23:14,319 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 13:23:14,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:23:14,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:23:14,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:23:14,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:23:14,348 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:23:14,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:23:14,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:23:14,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:23:14,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:23:14,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:23:14,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:23:14,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:23:14,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:23:14,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:23:14,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:23:14,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:23:14,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:23:14,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:23:14,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:23:14,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:23:14,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:23:14,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:23:14,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:23:14,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:23:14,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:23:14,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:23:14,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:23:14,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:23:14,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:23:14,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:23:14,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:23:14,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:23:14,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:23:14,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:23:14,814 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:23:14,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 13:23:14,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c71a29c5a/1fbbe1522805411da9c08e9545044083/FLAG0b5c1114e [2020-09-25 13:23:15,391 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:23:15,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 13:23:15,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c71a29c5a/1fbbe1522805411da9c08e9545044083/FLAG0b5c1114e [2020-09-25 13:23:15,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c71a29c5a/1fbbe1522805411da9c08e9545044083 [2020-09-25 13:23:15,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:23:15,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:23:15,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:15,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:23:15,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:23:15,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:15,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc0a92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:15, skipping insertion in model container [2020-09-25 13:23:15,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:15" (1/1) ... [2020-09-25 13:23:15,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:23:15,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:23:16,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:16,011 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:23:16,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:16,051 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:23:16,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16 WrapperNode [2020-09-25 13:23:16,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:16,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:23:16,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:23:16,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:23:16,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (1/1) ... [2020-09-25 13:23:16,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (1/1) ... [2020-09-25 13:23:16,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (1/1) ... [2020-09-25 13:23:16,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (1/1) ... [2020-09-25 13:23:16,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (1/1) ... [2020-09-25 13:23:16,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (1/1) ... [2020-09-25 13:23:16,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (1/1) ... [2020-09-25 13:23:16,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:23:16,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:23:16,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:23:16,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:23:16,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (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 13:23:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:23:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:23:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 13:23:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 13:23:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:23:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:23:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:23:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 13:23:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 13:23:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:23:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:23:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:23:16,497 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:23:16,498 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:23:16,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:16 BoogieIcfgContainer [2020-09-25 13:23:16,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:23:16,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:23:16,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:23:16,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:23:16,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:23:15" (1/3) ... [2020-09-25 13:23:16,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9e2dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:16, skipping insertion in model container [2020-09-25 13:23:16,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:16" (2/3) ... [2020-09-25 13:23:16,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9e2dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:16, skipping insertion in model container [2020-09-25 13:23:16,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:16" (3/3) ... [2020-09-25 13:23:16,513 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2020-09-25 13:23:16,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:23:16,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:23:16,568 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:23:16,603 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:23:16,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:23:16,604 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:23:16,604 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:23:16,604 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:23:16,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:23:16,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:23:16,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:23:16,634 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:23:16,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:23:16,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:16,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:16,647 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:16,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 13:23:16,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:16,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340902241] [2020-09-25 13:23:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:23:16,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 13:23:16,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:23:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:16,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:23:17,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:17,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:17,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:17,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:17,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:17,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:17,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:17,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:23:17,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:17,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:23:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:17,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:23:17,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:17,166 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 13:23:17,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340902241] [2020-09-25 13:23:17,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:17,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:17,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710496349] [2020-09-25 13:23:17,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:17,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:17,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:17,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:17,198 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 13:23:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:17,305 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 13:23:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:23:17,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:23:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:17,328 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:17,328 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:23:17,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:23:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:23:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:23:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:17,396 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 13:23:17,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:17,396 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:17,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:17,397 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:23:17,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:17,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:17,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:23:17,400 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:17,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:17,401 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 13:23:17,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:17,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236543120] [2020-09-25 13:23:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:17,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:23:17,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:17,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 13:23:17,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:17,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:17,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:17,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:17,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:17,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:17,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:17,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:17,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:17,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:17,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:17,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:17,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:23:17,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:17,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:17,681 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 13:23:17,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236543120] [2020-09-25 13:23:17,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:17,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:17,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243900366] [2020-09-25 13:23:17,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:17,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:17,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:17,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:17,685 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 13:23:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:17,755 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 13:23:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:17,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:23:17,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:17,758 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:23:17,758 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:23:17,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:23:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:23:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:23:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:17,770 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 13:23:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:17,771 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:17,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:17,771 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:23:17,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:17,773 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:23:17,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:23:17,774 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:17,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 13:23:17,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:17,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176001375] [2020-09-25 13:23:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:23:19,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:19,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1867 [2020-09-25 13:23:19,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:23:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:19,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:19,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:19,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 13:23:19,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:19,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:19,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:23:19,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:19,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:19,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:23:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:19,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:23:19,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176001375] [2020-09-25 13:23:19,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:19,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:23:19,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512007887] [2020-09-25 13:23:19,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:19,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:19,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:19,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:19,984 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 13:23:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:20,130 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 13:23:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:20,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:23:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:20,133 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:20,134 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:23:20,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:23:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 13:23:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:23:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 13:23:20,146 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 13:23:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:20,146 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 13:23:20,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 13:23:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:23:20,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:20,149 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:23:20,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:23:20,150 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 13:23:20,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:20,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317933986] [2020-09-25 13:23:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:21,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:21,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:23:21,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:23:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-09-25 13:23:21,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:21,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:23:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:23:21,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:21,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:21,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:21,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:21,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:21,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:21,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:21,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:23:21,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 13:23:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:22,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:22,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:23:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:22,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:22,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:23:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:22,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:22,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:22,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:22,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:23:22,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:22,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:22,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:23:22,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317933986] [2020-09-25 13:23:22,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:22,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:22,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147471503] [2020-09-25 13:23:22,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:22,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:22,128 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 13:23:22,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:22,277 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2020-09-25 13:23:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:23:22,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:23:22,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:22,280 INFO L225 Difference]: With dead ends: 104 [2020-09-25 13:23:22,280 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:23:22,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:23:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:23:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 13:23:22,293 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 35 [2020-09-25 13:23:22,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:22,294 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 13:23:22,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:22,294 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 13:23:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:23:22,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:22,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 13:23:22,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:23:22,298 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:22,299 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 13:23:22,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:22,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458344773] [2020-09-25 13:23:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:23:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:23:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:27,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:23:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:27,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:27,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:27,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:31,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:23:31,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3806 [2020-09-25 13:23:31,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:31,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:31,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:31,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:31,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 13:23:31,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:31,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:31,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:31,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:31,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:31,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:31,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:31,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:31,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:31,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:31,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:23:31,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:31,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:31,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:31,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:31,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:23:31,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:31,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:23:31,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458344773] [2020-09-25 13:23:31,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:31,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:31,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617881390] [2020-09-25 13:23:31,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:31,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:31,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:31,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:31,425 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-09-25 13:23:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:31,566 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2020-09-25 13:23:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:31,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:23:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:31,569 INFO L225 Difference]: With dead ends: 72 [2020-09-25 13:23:31,569 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:23:31,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:23:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:23:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 13:23:31,580 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 13:23:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:31,581 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 13:23:31,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 13:23:31,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:23:31,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:31,584 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2020-09-25 13:23:31,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:23:31,585 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:31,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:31,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 13:23:31,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:31,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473204412] [2020-09-25 13:23:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:31,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:23:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:23:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:23:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:36,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:36,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:41,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:23:41,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:23:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:23:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:41,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:23:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:41,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:41,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 13:23:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:41,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:41,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:41,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:41,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:41,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:41,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:41,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:41,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:41,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:41,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:41,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:41,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:41,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:41,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 13:23:41,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:41,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:42,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:42,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:42,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:42,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:42,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:42,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:42,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:42,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:42,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:42,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 13:23:42,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473204412] [2020-09-25 13:23:42,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:42,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:42,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255264630] [2020-09-25 13:23:42,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:42,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:42,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:42,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:42,053 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 9 states. [2020-09-25 13:23:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:42,277 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-09-25 13:23:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:23:42,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 13:23:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:42,281 INFO L225 Difference]: With dead ends: 78 [2020-09-25 13:23:42,281 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 13:23:42,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:23:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 13:23:42,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-09-25 13:23:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 13:23:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-09-25 13:23:42,307 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 67 [2020-09-25 13:23:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:42,309 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-09-25 13:23:42,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-09-25 13:23:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:23:42,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:42,318 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 13:23:42,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:23:42,318 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:42,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:42,319 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 13:23:42,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:42,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917937886] [2020-09-25 13:23:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:42,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:23:47,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:23:47,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:47,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:47,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:47,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:23:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:23:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:23:52,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:23:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:52,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:23:52,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:52,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:52,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:52,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:52,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:52,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:52,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 13:23:52,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:52,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:52,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:52,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:52,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:52,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:52,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 13:23:52,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917937886] [2020-09-25 13:23:52,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:52,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:52,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748871418] [2020-09-25 13:23:52,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:52,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:52,789 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 9 states. [2020-09-25 13:23:53,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:53,012 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-09-25 13:23:53,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:23:53,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 13:23:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:53,016 INFO L225 Difference]: With dead ends: 108 [2020-09-25 13:23:53,017 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 13:23:53,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:23:53,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 13:23:53,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2020-09-25 13:23:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 13:23:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 128 transitions. [2020-09-25 13:23:53,051 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 128 transitions. Word has length 69 [2020-09-25 13:23:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:53,055 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 128 transitions. [2020-09-25 13:23:53,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:53,055 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 128 transitions. [2020-09-25 13:23:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 13:23:53,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:53,058 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:23:53,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:53,059 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 13:23:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:53,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694403748] [2020-09-25 13:23:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 13:23:58,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:58,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:23:58,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:23:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:58,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:58,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:03,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 13:24:03,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 13:24:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:24:03,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:03,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:24:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:24:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 13:24:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:04,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:24:04,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:24:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-25 13:24:04,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:04,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:24:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:04,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:24:04,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:04,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:24:04,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 13:24:04,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:04,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:24:04,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:04,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:04,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:04,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:24:04,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:04,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:24:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:04,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:24:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:04,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:04,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:24:04,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:04,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:04,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:24:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:04,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:05,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:24:05,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:24:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1350 [2020-09-25 13:24:05,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:05,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:24:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 13:24:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:05,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:05,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:24:05,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 13:24:05,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:05,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:24:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:05,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:05,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:05,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:05,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:05,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:05,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:05,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:05,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:24:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:05,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:05,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:05,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:24:05,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:05,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:05,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:05,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:24:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:05,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:05,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:05,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:24:05,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:05,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:24:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 13:24:05,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694403748] [2020-09-25 13:24:05,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:05,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:24:05,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430421574] [2020-09-25 13:24:05,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:24:05,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:05,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:24:05,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:24:05,815 INFO L87 Difference]: Start difference. First operand 88 states and 128 transitions. Second operand 11 states. [2020-09-25 13:24:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:06,162 INFO L93 Difference]: Finished difference Result 205 states and 353 transitions. [2020-09-25 13:24:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:24:06,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-09-25 13:24:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:06,166 INFO L225 Difference]: With dead ends: 205 [2020-09-25 13:24:06,166 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 13:24:06,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:24:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 13:24:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87. [2020-09-25 13:24:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 13:24:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2020-09-25 13:24:06,182 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 101 [2020-09-25 13:24:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:06,182 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2020-09-25 13:24:06,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:24:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2020-09-25 13:24:06,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 13:24:06,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:06,184 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:24:06,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:24:06,185 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:06,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 13:24:06,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:06,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690475672] [2020-09-25 13:24:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:11,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:24:11,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:24:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:24:11,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:11,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:24:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:24:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:24:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:11,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:11,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:11,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:11,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:11,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:11,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:11,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking...