/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product08.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:00:27,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:00:27,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:00:28,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:00:28,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:00:28,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:00:28,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:00:28,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:00:28,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:00:28,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:00:28,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:00:28,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:00:28,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:00:28,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:00:28,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:00:28,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:00:28,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:00:28,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:00:28,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:00:28,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:00:28,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:00:28,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:00:28,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:00:28,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:00:28,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:00:28,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:00:28,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:00:28,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:00:28,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:00:28,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:00:28,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:00:28,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:00:28,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:00:28,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:00:28,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:00:28,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:00:28,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:00:28,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:00:28,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:00:28,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:00:28,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:00:28,113 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 03:00:28,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:00:28,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:00:28,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:00:28,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:00:28,166 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:00:28,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:00:28,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:00:28,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:00:28,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:00:28,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:00:28,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:00:28,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:00:28,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:00:28,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:00:28,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:00:28,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:00:28,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:00:28,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:00:28,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:00:28,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:00:28,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:00:28,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:00:28,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:00:28,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:00:28,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:00:28,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:00:28,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:00:28,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:00:28,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:00:28,173 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:00:28,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:00:28,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:00:28,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:00:28,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:00:28,666 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:00:28,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product08.cil.c [2020-09-25 03:00:28,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/261549613/5285646fc9c545a5be2d8af496724a65/FLAG162e03b20 [2020-09-25 03:00:29,491 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:00:29,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product08.cil.c [2020-09-25 03:00:29,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/261549613/5285646fc9c545a5be2d8af496724a65/FLAG162e03b20 [2020-09-25 03:00:29,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/261549613/5285646fc9c545a5be2d8af496724a65 [2020-09-25 03:00:29,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:00:29,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:00:29,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:00:29,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:00:29,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:00:29,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:00:29" (1/1) ... [2020-09-25 03:00:29,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b58255d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:29, skipping insertion in model container [2020-09-25 03:00:29,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:00:29" (1/1) ... [2020-09-25 03:00:29,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:00:29,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:00:30,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:00:30,276 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:00:30,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:00:30,426 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:00:30,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30 WrapperNode [2020-09-25 03:00:30,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:00:30,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:00:30,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:00:30,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:00:30,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (1/1) ... [2020-09-25 03:00:30,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (1/1) ... [2020-09-25 03:00:30,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (1/1) ... [2020-09-25 03:00:30,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (1/1) ... [2020-09-25 03:00:30,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (1/1) ... [2020-09-25 03:00:30,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (1/1) ... [2020-09-25 03:00:30,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (1/1) ... [2020-09-25 03:00:30,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:00:30,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:00:30,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:00:30,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:00:30,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (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 03:00:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:00:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:00:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 03:00:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 03:00:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 03:00:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 03:00:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 03:00:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 03:00:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 03:00:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 03:00:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 03:00:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 03:00:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 03:00:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 03:00:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 03:00:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 03:00:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 03:00:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:00:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 03:00:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 03:00:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 03:00:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 03:00:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 03:00:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 03:00:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 03:00:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 03:00:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 03:00:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 03:00:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 03:00:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 03:00:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 03:00:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 03:00:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 03:00:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 03:00:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 03:00:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 03:00:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 03:00:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:00:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:00:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 03:00:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 03:00:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 03:00:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 03:00:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 03:00:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 03:00:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 03:00:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:00:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 03:00:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 03:00:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 03:00:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 03:00:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 03:00:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 03:00:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 03:00:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 03:00:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 03:00:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 03:00:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 03:00:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:00:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 03:00:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:00:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:00:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 03:00:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:00:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:00:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:00:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:00:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 03:00:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:00:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 03:00:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 03:00:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:00:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 03:00:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 03:00:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 03:00:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 03:00:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 03:00:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 03:00:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 03:00:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 03:00:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 03:00:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 03:00:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 03:00:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 03:00:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 03:00:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:00:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 03:00:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:00:31,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:00:31,781 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 03:00:31,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:00:31 BoogieIcfgContainer [2020-09-25 03:00:31,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:00:31,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:00:31,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:00:31,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:00:31,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:00:29" (1/3) ... [2020-09-25 03:00:31,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eae1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:00:31, skipping insertion in model container [2020-09-25 03:00:31,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:00:30" (2/3) ... [2020-09-25 03:00:31,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eae1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:00:31, skipping insertion in model container [2020-09-25 03:00:31,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:00:31" (3/3) ... [2020-09-25 03:00:31,798 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product08.cil.c [2020-09-25 03:00:31,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:00:31,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:00:31,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:00:31,875 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:00:31,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:00:31,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:00:31,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:00:31,875 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:00:31,875 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:00:31,876 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:00:31,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:00:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states. [2020-09-25 03:00:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 03:00:31,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:00:31,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:00:31,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:00:31,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:00:31,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1039821128, now seen corresponding path program 1 times [2020-09-25 03:00:31,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:00:31,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863200897] [2020-09-25 03:00:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:00:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:37,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:37,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 03:00:37,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:00:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 03:00:37,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:00:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 03:00:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 03:00:37,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:00:37,768 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:00:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:00:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:38,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:38,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:00:38,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:38,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 03:00:38,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 03:00:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:00:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:38,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:38,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:38,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:38,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:00:38,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:00:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:38,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:38,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:38,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:38,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:00:38,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:38,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:00:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:38,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:38,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:00:38,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:00:38,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:38,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:00:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:38,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:38,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:38,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:00:38,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:38,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:38,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 03:00:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:38,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:38,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:38,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:38,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:00:38,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:00:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:00:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:38,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 03:00:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:38,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:38,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:38,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:00:38,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:00:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:38,372 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 03:00:38,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863200897] [2020-09-25 03:00:38,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:00:38,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:00:38,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153204969] [2020-09-25 03:00:38,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:00:38,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:00:38,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:00:38,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:00:38,405 INFO L87 Difference]: Start difference. First operand 279 states. Second operand 8 states. [2020-09-25 03:00:38,998 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:00:39,991 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:00:40,382 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:00:40,796 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:00:41,204 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:00:41,577 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:00:41,940 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:00:42,251 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:00:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:00:43,932 INFO L93 Difference]: Finished difference Result 551 states and 683 transitions. [2020-09-25 03:00:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:00:43,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-25 03:00:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:00:43,967 INFO L225 Difference]: With dead ends: 551 [2020-09-25 03:00:43,968 INFO L226 Difference]: Without dead ends: 383 [2020-09-25 03:00:43,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:00:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-09-25 03:00:44,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 338. [2020-09-25 03:00:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-09-25 03:00:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 382 transitions. [2020-09-25 03:00:44,110 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 382 transitions. Word has length 142 [2020-09-25 03:00:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:00:44,111 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 382 transitions. [2020-09-25 03:00:44,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:00:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 382 transitions. [2020-09-25 03:00:44,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 03:00:44,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:00:44,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:00:44,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:00:44,119 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:00:44,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:00:44,119 INFO L82 PathProgramCache]: Analyzing trace with hash -507367720, now seen corresponding path program 1 times [2020-09-25 03:00:44,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:00:44,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962330537] [2020-09-25 03:00:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:00:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:44,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 03:00:49,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:00:49,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 03:00:49,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:00:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 03:00:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 03:00:49,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:49,494 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:00:49,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:00:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:00:49,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 03:00:49,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 03:00:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:00:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:49,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:49,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:49,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:00:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:00:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:49,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:49,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:00:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:00:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:49,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:00:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:49,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:49,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:49,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:49,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:49,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 03:00:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:00:49,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:49,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:00:49,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:00:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:49,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 03:00:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:00:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 03:00:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:49,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:49,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:49,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:49,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:00:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:49,878 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 03:00:49,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962330537] [2020-09-25 03:00:49,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:00:49,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:00:49,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263371599] [2020-09-25 03:00:49,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:00:49,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:00:49,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:00:49,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:00:49,883 INFO L87 Difference]: Start difference. First operand 338 states and 382 transitions. Second operand 5 states. [2020-09-25 03:00:50,413 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:00:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:00:52,529 INFO L93 Difference]: Finished difference Result 870 states and 1066 transitions. [2020-09-25 03:00:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:00:52,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 03:00:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:00:52,538 INFO L225 Difference]: With dead ends: 870 [2020-09-25 03:00:52,538 INFO L226 Difference]: Without dead ends: 642 [2020-09-25 03:00:52,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:00:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-09-25 03:00:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 545. [2020-09-25 03:00:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 03:00:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 631 transitions. [2020-09-25 03:00:52,675 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 631 transitions. Word has length 148 [2020-09-25 03:00:52,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:00:52,676 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 631 transitions. [2020-09-25 03:00:52,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:00:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 631 transitions. [2020-09-25 03:00:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 03:00:52,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:00:52,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:00:52,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:00:52,681 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:00:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:00:52,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1968228625, now seen corresponding path program 1 times [2020-09-25 03:00:52,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:00:52,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39040792] [2020-09-25 03:00:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:00:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:57,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:57,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 03:00:57,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:00:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 03:00:57,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:00:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 03:00:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 03:00:57,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:00:58,041 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:00:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:00:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:00:58,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 03:00:58,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 03:00:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:00:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:58,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:00:58,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:00:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:58,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:00:58,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:58,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:00:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:58,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:00:58,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:00:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:00:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:58,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:00:58,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:00:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:00:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 03:00:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:00:58,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:00:58,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:00:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-25 03:00:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:00:58,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:58,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:00:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:00:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:00:58,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:00:58,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:00:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 03:00:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:58,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:58,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:00:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:58,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 03:00:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:00:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:00:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:00:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:00:58,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:00:58,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:00:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:00:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:00:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:00:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:00:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:00:58,530 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 03:00:58,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39040792] [2020-09-25 03:00:58,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:00:58,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:00:58,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265020615] [2020-09-25 03:00:58,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:00:58,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:00:58,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:00:58,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:00:58,533 INFO L87 Difference]: Start difference. First operand 545 states and 631 transitions. Second operand 6 states. [2020-09-25 03:00:59,072 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:00:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:00:59,924 INFO L93 Difference]: Finished difference Result 880 states and 1066 transitions. [2020-09-25 03:00:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:00:59,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 03:00:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:00:59,930 INFO L225 Difference]: With dead ends: 880 [2020-09-25 03:00:59,930 INFO L226 Difference]: Without dead ends: 424 [2020-09-25 03:00:59,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:00:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-09-25 03:00:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 397. [2020-09-25 03:00:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-09-25 03:00:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 432 transitions. [2020-09-25 03:00:59,996 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 432 transitions. Word has length 156 [2020-09-25 03:00:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:00:59,997 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 432 transitions. [2020-09-25 03:00:59,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:00:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 432 transitions. [2020-09-25 03:00:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 03:00:59,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:01:00,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:00,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:01:00,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:01:00,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:01:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash 282565316, now seen corresponding path program 1 times [2020-09-25 03:01:00,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:01:00,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027534774] [2020-09-25 03:01:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:01:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:05,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 03:01:05,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:01:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 03:01:05,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:01:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 03:01:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 03:01:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:01:05,525 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:01:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:01:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:05,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:01:05,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:01:05,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 03:01:05,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:01:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:01:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 03:01:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:01:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:01:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:05,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:05,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:01:05,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:01:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:01:05,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:01:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:01:05,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:01:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:01:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:01:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:05,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:05,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:01:05,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:01:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:01:05,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:01:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:01:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:01:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:01:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:01:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:05,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:01:05,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:01:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:01:05,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:01:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:01:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:01:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:01:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:01:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:05,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:01:05,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:01:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:01:05,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:01:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:01:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:01:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:01:05,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 03:01:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:05,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:05,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:01:05,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:01:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:01:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:01:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:01:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:01:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:01:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 03:01:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:05,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:05,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:01:05,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:01:06,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:01:06,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:01:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:01:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:01:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:01:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 03:01:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:06,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:06,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:01:06,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:01:06,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:01:06,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:01:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:01:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:01:06,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:01:06,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 03:01:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:01:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:01:06,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:01:06,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:01:06,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:01:06,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:01:06,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:01:06,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:01:06,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:01:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:01:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:01:06,126 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 03:01:06,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027534774] [2020-09-25 03:01:06,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:01:06,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 03:01:06,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067739670] [2020-09-25 03:01:06,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:01:06,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:01:06,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:01:06,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:01:06,130 INFO L87 Difference]: Start difference. First operand 397 states and 432 transitions. Second operand 11 states. [2020-09-25 03:01:06,683 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:01:08,045 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 03:01:08,402 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 03:01:08,729 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:01:09,094 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 03:01:09,434 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 03:01:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:01:09,908 INFO L93 Difference]: Finished difference Result 471 states and 535 transitions. [2020-09-25 03:01:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:01:09,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2020-09-25 03:01:09,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:01:09,910 INFO L225 Difference]: With dead ends: 471 [2020-09-25 03:01:09,910 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:01:09,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-09-25 03:01:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:01:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:01:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:01:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:01:09,913 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 166 [2020-09-25 03:01:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:01:09,913 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:01:09,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:01:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:01:09,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:01:09,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:01:09,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:01:10,119 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:01:10,301 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 03:01:10,476 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:01:10,646 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:01:10,962 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 192 [2020-09-25 03:01:11,130 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 03:01:11,381 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-25 03:01:11,630 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-25 03:01:11,899 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 03:01:12,232 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 03:01:12,491 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 03:01:12,815 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 03:01:13,148 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 03:01:13,413 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-25 03:01:13,752 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 190 [2020-09-25 03:01:14,086 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-09-25 03:01:14,411 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 03:01:14,672 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-25 03:01:15,006 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-09-25 03:01:15,267 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-25 03:01:15,509 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-25 03:01:15,832 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 03:01:16,090 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 03:01:16,345 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 03:01:16,498 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:01:16,816 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-25 03:01:17,188 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-09-25 03:01:17,354 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:01:17,516 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 03:01:17,680 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:01:17,835 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:01:17,999 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 03:01:18,236 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 19