/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=LOWLEXORDER --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_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:24:18,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:24:18,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:24:18,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:24:18,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:24:18,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:24:18,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:24:18,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:24:18,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:24:18,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:24:18,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:24:18,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:24:18,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:24:18,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:24:18,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:24:18,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:24:18,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:24:18,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:24:18,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:24:18,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:24:18,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:24:18,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:24:18,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:24:18,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:24:18,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:24:18,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:24:18,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:24:18,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:24:18,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:24:18,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:24:18,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:24:18,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:24:18,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:24:18,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:24:18,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:24:18,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:24:18,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:24:18,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:24:18,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:24:18,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:24:18,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:24:18,288 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 [2020-09-24 21:24:18,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:24:18,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:24:18,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:24:18,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:24:18,318 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:24:18,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:24:18,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:24:18,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:24:18,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:24:18,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:24:18,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:24:18,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:24:18,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:24:18,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:24:18,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:24:18,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:24:18,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:24:18,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:24:18,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:24:18,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:24:18,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:24:18,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:24:18,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:24:18,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:24:18,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:24:18,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:24:18,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:24:18,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:24:18,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:24:18,327 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:24:18,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:24:18,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:24:18,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:24:18,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:24:18,822 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:24:18,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c [2020-09-24 21:24:18,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447e9b032/c9aa8ae9106841c6815d06fe08f4f532/FLAG65f05d9dd [2020-09-24 21:24:19,566 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:24:19,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c [2020-09-24 21:24:19,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447e9b032/c9aa8ae9106841c6815d06fe08f4f532/FLAG65f05d9dd [2020-09-24 21:24:19,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/447e9b032/c9aa8ae9106841c6815d06fe08f4f532 [2020-09-24 21:24:19,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:24:19,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:24:19,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:24:19,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:24:19,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:24:19,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:24:19" (1/1) ... [2020-09-24 21:24:19,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0e50c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:19, skipping insertion in model container [2020-09-24 21:24:19,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:24:19" (1/1) ... [2020-09-24 21:24:19,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:24:19,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:24:20,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:24:20,420 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:24:20,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:24:20,570 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:24:20,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20 WrapperNode [2020-09-24 21:24:20,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:24:20,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:24:20,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:24:20,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:24:20,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (1/1) ... [2020-09-24 21:24:20,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (1/1) ... [2020-09-24 21:24:20,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (1/1) ... [2020-09-24 21:24:20,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (1/1) ... [2020-09-24 21:24:20,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (1/1) ... [2020-09-24 21:24:20,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (1/1) ... [2020-09-24 21:24:20,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (1/1) ... [2020-09-24 21:24:20,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:24:20,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:24:20,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:24:20,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:24:20,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (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 [2020-09-24 21:24:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:24:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:24:20,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:24:20,767 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:24:20,767 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:24:20,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:24:20,767 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:24:20,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:24:20,767 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:24:20,768 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:24:20,768 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:24:20,768 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:24:20,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:24:20,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:24:20,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:24:20,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:24:20,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:24:20,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:24:20,769 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:24:20,771 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:24:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:24:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:24:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:24:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:24:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 21:24:20,776 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:24:20,776 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:24:20,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:24:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 21:24:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:24:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 21:24:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:24:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:24:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:24:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:24:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:24:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 21:24:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:24:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:24:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:24:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:24:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:24:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:24:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:24:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:24:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:24:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:24:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:24:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:24:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:24:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:24:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:24:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:24:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:24:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:24:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:24:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:24:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:24:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:24:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:24:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:24:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:24:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:24:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:24:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:24:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:24:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:24:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:24:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:24:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:24:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:24:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:24:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:24:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:24:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:24:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:24:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:24:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:24:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 21:24:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:24:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:24:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:24:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:24:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:24:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:24:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:24:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 21:24:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 21:24:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:24:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 21:24:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:24:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:24:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:24:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:24:21,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:24:21,952 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:24:21,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:24:21 BoogieIcfgContainer [2020-09-24 21:24:21,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:24:21,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:24:21,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:24:21,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:24:21,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:24:19" (1/3) ... [2020-09-24 21:24:21,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac093d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:24:21, skipping insertion in model container [2020-09-24 21:24:21,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:20" (2/3) ... [2020-09-24 21:24:21,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac093d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:24:21, skipping insertion in model container [2020-09-24 21:24:21,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:24:21" (3/3) ... [2020-09-24 21:24:21,969 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product31.cil.c [2020-09-24 21:24:21,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:24:21,991 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:24:22,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:24:22,051 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:24:22,051 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:24:22,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:24:22,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:24:22,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:24:22,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:24:22,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:24:22,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:24:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-09-24 21:24:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:24:22,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:24:22,107 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] [2020-09-24 21:24:22,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:24:22,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:24:22,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1955502520, now seen corresponding path program 1 times [2020-09-24 21:24:22,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:24:22,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729762792] [2020-09-24 21:24:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:24:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:22,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:24,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:27,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:27,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 21:24:27,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:24:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:24:27,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:24:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 21:24:27,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:24:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:24:28,133 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:24:28,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:24:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:28,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:28,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:24:28,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-24 21:24:28,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:24:28,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:24:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:28,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:28,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:24:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:28,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 21:24:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:24:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:28,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:28,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:28,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:24:28,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:24:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:24:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:28,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:28,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:28,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:24:28,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:28,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:24:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:28,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:28,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:28,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:28,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:24:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:24:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:24:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 21:24:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:28,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:28,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:28,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:28,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:24:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:24:28,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729762792] [2020-09-24 21:24:28,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:24:28,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:24:28,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320455160] [2020-09-24 21:24:28,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:24:28,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:24:28,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:24:28,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:24:28,843 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 8 states. [2020-09-24 21:24:29,561 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:24:30,542 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:24:30,930 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:24:31,373 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:24:31,787 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:24:32,112 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:24:32,550 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:24:32,887 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:24:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:24:35,067 INFO L93 Difference]: Finished difference Result 635 states and 783 transitions. [2020-09-24 21:24:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:24:35,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 21:24:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:24:35,112 INFO L225 Difference]: With dead ends: 635 [2020-09-24 21:24:35,113 INFO L226 Difference]: Without dead ends: 440 [2020-09-24 21:24:35,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:24:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-09-24 21:24:35,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 394. [2020-09-24 21:24:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-24 21:24:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 449 transitions. [2020-09-24 21:24:35,309 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 449 transitions. Word has length 142 [2020-09-24 21:24:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:24:35,310 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 449 transitions. [2020-09-24 21:24:35,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:24:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 449 transitions. [2020-09-24 21:24:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 21:24:35,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:24:35,318 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] [2020-09-24 21:24:35,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:24:35,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:24:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:24:35,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1412835206, now seen corresponding path program 1 times [2020-09-24 21:24:35,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:24:35,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512466820] [2020-09-24 21:24:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:24:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:40,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 21:24:40,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:24:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:24:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:24:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 21:24:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 21:24:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:40,757 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:24:40,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:24:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:41,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:24:41,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 21:24:41,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:24:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:41,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:24:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:41,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:41,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:41,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:24:41,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:41,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:24:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:41,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:41,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:24:41,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:41,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:24:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:41,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:41,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:24:41,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:24:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:41,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:24:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:41,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:41,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:41,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:41,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:41,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:41,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 21:24:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:24:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:24:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:41,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 21:24:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:41,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:41,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:41,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:24:41,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:24:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:41,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:24:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:41,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:41,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:41,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:24:41,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:41,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:41,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:24:41,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:24:41,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512466820] [2020-09-24 21:24:41,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:24:41,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:24:41,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710314441] [2020-09-24 21:24:41,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:24:41,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:24:41,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:24:41,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:24:41,278 INFO L87 Difference]: Start difference. First operand 394 states and 449 transitions. Second operand 5 states. [2020-09-24 21:24:41,734 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:24:42,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:24:42,456 INFO L93 Difference]: Finished difference Result 583 states and 699 transitions. [2020-09-24 21:24:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:24:42,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 21:24:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:24:42,462 INFO L225 Difference]: With dead ends: 583 [2020-09-24 21:24:42,462 INFO L226 Difference]: Without dead ends: 288 [2020-09-24 21:24:42,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:24:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-24 21:24:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 266. [2020-09-24 21:24:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-24 21:24:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 284 transitions. [2020-09-24 21:24:42,506 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 284 transitions. Word has length 148 [2020-09-24 21:24:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:24:42,507 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 284 transitions. [2020-09-24 21:24:42,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:24:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 284 transitions. [2020-09-24 21:24:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 21:24:42,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:24:42,510 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] [2020-09-24 21:24:42,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:24:42,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:24:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:24:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1757695302, now seen corresponding path program 1 times [2020-09-24 21:24:42,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:24:42,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700393720] [2020-09-24 21:24:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:24:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:47,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:47,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 21:24:47,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:24:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-24 21:24:47,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:24:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 21:24:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 21:24:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:48,019 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:24:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:24:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:48,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:48,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:24:48,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:48,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 21:24:48,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:24:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:24:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:48,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:48,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:48,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:24:48,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:48,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:48,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:48,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:48,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:24:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:48,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:24:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:24:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:48,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:48,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:48,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:24:48,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:24:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:24:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:48,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:48,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:48,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:24:48,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:48,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 21:24:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:48,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:24:48,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:24:48,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:24:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:24:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:24:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 21:24:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:48,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:48,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:48,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:24:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:24:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:24:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:24:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 21:24:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:48,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:48,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:24:48,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:24:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:24:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:24:48,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700393720] [2020-09-24 21:24:48,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:24:48,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 21:24:48,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813115613] [2020-09-24 21:24:48,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:24:48,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:24:48,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:24:48,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:24:48,647 INFO L87 Difference]: Start difference. First operand 266 states and 284 transitions. Second operand 11 states. [2020-09-24 21:24:49,162 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:24:49,953 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:24:50,810 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-24 21:24:51,432 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-09-24 21:24:51,777 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:24:52,179 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 21:24:52,491 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:24:52,886 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-09-24 21:24:53,200 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:24:53,570 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:24:53,948 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:24:54,283 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:24:54,972 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 21:24:55,367 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-24 21:24:55,762 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:24:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:24:56,325 INFO L93 Difference]: Finished difference Result 460 states and 513 transitions. [2020-09-24 21:24:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:24:56,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 157 [2020-09-24 21:24:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:24:56,330 INFO L225 Difference]: With dead ends: 460 [2020-09-24 21:24:56,330 INFO L226 Difference]: Without dead ends: 358 [2020-09-24 21:24:56,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:24:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-24 21:24:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 331. [2020-09-24 21:24:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-09-24 21:24:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 354 transitions. [2020-09-24 21:24:56,382 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 354 transitions. Word has length 157 [2020-09-24 21:24:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:24:56,383 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 354 transitions. [2020-09-24 21:24:56,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:24:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 354 transitions. [2020-09-24 21:24:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 21:24:56,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:24:56,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:24:56,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:24:56,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:24:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:24:56,388 INFO L82 PathProgramCache]: Analyzing trace with hash 128572963, now seen corresponding path program 1 times [2020-09-24 21:24:56,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:24:56,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631977597] [2020-09-24 21:24:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:24:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:00,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:00,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:01,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:01,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 21:25:01,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:25:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-24 21:25:01,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:25:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 21:25:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 21:25:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:01,805 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:02,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 21:25:02,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:25:02,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:02,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:02,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:02,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:25:02,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:02,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:02,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:25:02,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:02,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:02,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 21:25:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:25:02,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:25:02,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:25:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:25:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:25:02,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 21:25:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:25:02,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 21:25:02,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:25:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:25:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:25:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:25:02,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:25:02,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:25:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:02,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:02,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 21:25:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:25:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:25:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:25:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:25:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:25:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 21:25:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:02,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 21:25:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:02,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:02,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 21:25:02,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631977597] [2020-09-24 21:25:02,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:25:02,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:25:02,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712159913] [2020-09-24 21:25:02,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:25:02,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:02,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:25:02,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:25:02,532 INFO L87 Difference]: Start difference. First operand 331 states and 354 transitions. Second operand 10 states. [2020-09-24 21:25:03,373 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-09-24 21:25:03,963 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:04,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:25:04,856 INFO L93 Difference]: Finished difference Result 419 states and 458 transitions. [2020-09-24 21:25:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:25:04,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 196 [2020-09-24 21:25:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:25:04,859 INFO L225 Difference]: With dead ends: 419 [2020-09-24 21:25:04,860 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:25:04,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:25:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:25:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:25:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:25:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:25:04,862 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2020-09-24 21:25:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:25:04,862 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:25:04,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:25:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:25:04,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:25:04,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:25:04,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:25:05,089 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 21:25:05,534 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-09-24 21:25:05,923 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 21:25:06,286 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 21:25:06,443 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:25:06,828 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-09-24 21:25:07,159 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 24 [2020-09-24 21:25:07,325 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 191