/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 --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:09:40,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:09:40,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:09:40,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:09:40,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:09:40,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:09:40,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:09:40,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:09:40,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:09:40,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:09:40,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:09:40,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:09:40,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:09:40,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:09:40,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:09:40,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:09:40,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:09:40,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:09:40,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:09:40,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:09:40,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:09:40,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:09:40,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:09:40,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:09:40,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:09:40,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:09:40,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:09:40,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:09:40,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:09:40,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:09:40,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:09:40,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:09:40,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:09:40,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:09:40,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:09:40,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:09:40,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:09:40,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:09:40,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:09:40,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:09:40,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:09:40,336 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 [2020-09-21 10:09:40,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:09:40,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:09:40,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:09:40,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:09:40,362 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:09:40,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:09:40,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:09:40,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:09:40,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:09:40,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:09:40,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:09:40,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:09:40,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:09:40,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:09:40,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:09:40,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:09:40,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:09:40,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:09:40,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:09:40,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:09:40,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:09:40,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:09:40,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:09:40,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:09:40,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:09:40,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:09:40,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:09:40,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:09:40,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:09:40,367 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.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:09:40,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:09:40,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:09:40,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:09:40,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:09:40,836 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:09:40,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product23.cil.c [2020-09-21 10:09:40,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be129ae4c/c972e871c5234004b5cf6e7d1a159007/FLAGf37b9038f [2020-09-21 10:09:41,537 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:09:41,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product23.cil.c [2020-09-21 10:09:41,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be129ae4c/c972e871c5234004b5cf6e7d1a159007/FLAGf37b9038f [2020-09-21 10:09:41,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be129ae4c/c972e871c5234004b5cf6e7d1a159007 [2020-09-21 10:09:41,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:09:41,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:09:41,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:09:41,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:09:41,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:09:41,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:09:41" (1/1) ... [2020-09-21 10:09:41,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@823e3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:41, skipping insertion in model container [2020-09-21 10:09:41,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:09:41" (1/1) ... [2020-09-21 10:09:41,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:09:41,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:09:42,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:09:42,363 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:09:42,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:09:42,509 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:09:42,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42 WrapperNode [2020-09-21 10:09:42,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:09:42,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:09:42,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:09:42,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:09:42,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (1/1) ... [2020-09-21 10:09:42,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (1/1) ... [2020-09-21 10:09:42,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (1/1) ... [2020-09-21 10:09:42,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (1/1) ... [2020-09-21 10:09:42,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (1/1) ... [2020-09-21 10:09:42,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (1/1) ... [2020-09-21 10:09:42,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (1/1) ... [2020-09-21 10:09:42,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:09:42,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:09:42,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:09:42,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:09:42,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (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 [2020-09-21 10:09:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:09:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:09:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:09:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:09:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:09:42,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:09:42,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:09:42,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:09:42,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:09:42,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:09:42,704 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:09:42,705 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:09:42,705 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:09:42,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:09:42,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:09:42,707 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:09:42,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:09:42,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:09:42,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:09:42,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:09:42,708 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:09:42,708 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:09:42,709 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:09:42,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:09:42,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 10:09:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:09:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:09:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:09:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:09:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:09:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:09:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:09:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:09:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 10:09:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:09:42,712 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:09:42,712 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:09:42,712 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:09:42,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:09:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:09:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:09:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:09:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:09:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:09:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:09:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:09:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:09:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:09:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:09:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:09:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:09:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:09:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:09:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:09:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:09:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:09:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:09:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:09:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:09:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:09:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:09:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:09:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:09:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:09:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:09:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:09:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:09:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:09:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:09:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:09:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:09:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:09:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:09:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:09:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:09:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:09:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:09:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:09:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:09:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 10:09:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:09:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:09:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:09:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 10:09:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:09:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:09:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:09:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:09:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:09:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:09:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:09:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:09:43,779 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:09:43,780 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:09:43,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:09:43 BoogieIcfgContainer [2020-09-21 10:09:43,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:09:43,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:09:43,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:09:43,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:09:43,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:09:41" (1/3) ... [2020-09-21 10:09:43,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f60ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:09:43, skipping insertion in model container [2020-09-21 10:09:43,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:09:42" (2/3) ... [2020-09-21 10:09:43,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f60ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:09:43, skipping insertion in model container [2020-09-21 10:09:43,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:09:43" (3/3) ... [2020-09-21 10:09:43,801 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product23.cil.c [2020-09-21 10:09:43,813 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:09:43,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:09:43,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:09:43,870 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:09:43,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:09:43,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:09:43,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:09:43,871 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:09:43,871 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:09:43,871 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:09:43,871 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:09:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-21 10:09:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 10:09:43,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:09:43,911 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] [2020-09-21 10:09:43,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:09:43,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:09:43,919 INFO L82 PathProgramCache]: Analyzing trace with hash -635159435, now seen corresponding path program 1 times [2020-09-21 10:09:43,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:09:43,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707385477] [2020-09-21 10:09:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:09:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:44,716 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:09:44,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:09:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:09:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:09:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:09:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:09:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:44,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:09:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:09:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:09:44,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707385477] [2020-09-21 10:09:44,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:09:44,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:09:44,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365947021] [2020-09-21 10:09:44,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:09:44,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:09:44,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:09:44,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:09:44,883 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-09-21 10:09:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:09:46,050 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-09-21 10:09:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:09:46,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 10:09:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:09:46,070 INFO L225 Difference]: With dead ends: 299 [2020-09-21 10:09:46,070 INFO L226 Difference]: Without dead ends: 162 [2020-09-21 10:09:46,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:09:46,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-21 10:09:46,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 128. [2020-09-21 10:09:46,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-21 10:09:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2020-09-21 10:09:46,178 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 46 [2020-09-21 10:09:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:09:46,179 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2020-09-21 10:09:46,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:09:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2020-09-21 10:09:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 10:09:46,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:09:46,183 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] [2020-09-21 10:09:46,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:09:46,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:09:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:09:46,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1199676654, now seen corresponding path program 1 times [2020-09-21 10:09:46,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:09:46,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007456192] [2020-09-21 10:09:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:09:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:46,582 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:09:46,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:09:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:09:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:46,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:09:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:09:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:46,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:09:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:46,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:09:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:09:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:09:46,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007456192] [2020-09-21 10:09:46,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:09:46,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:09:46,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192155054] [2020-09-21 10:09:46,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:09:46,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:09:46,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:09:46,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:09:46,643 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 4 states. [2020-09-21 10:09:47,032 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:09:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:09:47,966 INFO L93 Difference]: Finished difference Result 226 states and 276 transitions. [2020-09-21 10:09:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:09:47,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 10:09:47,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:09:47,970 INFO L225 Difference]: With dead ends: 226 [2020-09-21 10:09:47,970 INFO L226 Difference]: Without dead ends: 146 [2020-09-21 10:09:47,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:09:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-21 10:09:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2020-09-21 10:09:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-21 10:09:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-09-21 10:09:48,012 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 47 [2020-09-21 10:09:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:09:48,012 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-09-21 10:09:48,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:09:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-09-21 10:09:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 10:09:48,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:09:48,015 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] [2020-09-21 10:09:48,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:09:48,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:09:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:09:48,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1199325015, now seen corresponding path program 1 times [2020-09-21 10:09:48,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:09:48,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117924347] [2020-09-21 10:09:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:09:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:48,428 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:09:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:09:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:48,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:09:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:48,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:09:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:09:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:48,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:09:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:09:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:48,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:09:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:09:48,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117924347] [2020-09-21 10:09:48,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:09:48,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:09:48,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890909585] [2020-09-21 10:09:48,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:09:48,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:09:48,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:09:48,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:09:48,531 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 8 states. [2020-09-21 10:09:48,902 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:09:49,275 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:09:49,615 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:09:49,894 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:09:50,730 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:09:52,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:09:52,652 INFO L93 Difference]: Finished difference Result 409 states and 509 transitions. [2020-09-21 10:09:52,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:09:52,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-21 10:09:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:09:52,659 INFO L225 Difference]: With dead ends: 409 [2020-09-21 10:09:52,659 INFO L226 Difference]: Without dead ends: 314 [2020-09-21 10:09:52,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:09:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-09-21 10:09:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 256. [2020-09-21 10:09:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-21 10:09:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 310 transitions. [2020-09-21 10:09:52,740 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 310 transitions. Word has length 51 [2020-09-21 10:09:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:09:52,740 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 310 transitions. [2020-09-21 10:09:52,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:09:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 310 transitions. [2020-09-21 10:09:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:09:52,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:09:52,743 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] [2020-09-21 10:09:52,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:09:52,744 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:09:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:09:52,744 INFO L82 PathProgramCache]: Analyzing trace with hash -274049321, now seen corresponding path program 1 times [2020-09-21 10:09:52,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:09:52,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917425121] [2020-09-21 10:09:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:09:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,226 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:09:53,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:09:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:09:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:09:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:09:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:09:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:09:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:09:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:09:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:09:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:09:53,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917425121] [2020-09-21 10:09:53,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:09:53,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:09:53,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864420161] [2020-09-21 10:09:53,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:09:53,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:09:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:09:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:09:53,375 INFO L87 Difference]: Start difference. First operand 256 states and 310 transitions. Second operand 12 states. [2020-09-21 10:09:53,809 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:09:54,212 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:09:54,537 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:09:54,838 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:09:55,482 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:09:56,492 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:09:56,970 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:09:57,415 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:09:57,749 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:09:58,080 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:09:58,548 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:09:58,971 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:09:59,404 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:10:01,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:10:01,096 INFO L93 Difference]: Finished difference Result 1027 states and 1368 transitions. [2020-09-21 10:10:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 10:10:01,097 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-21 10:10:01,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:10:01,104 INFO L225 Difference]: With dead ends: 1027 [2020-09-21 10:10:01,105 INFO L226 Difference]: Without dead ends: 795 [2020-09-21 10:10:01,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-21 10:10:01,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-09-21 10:10:01,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 694. [2020-09-21 10:10:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-09-21 10:10:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 862 transitions. [2020-09-21 10:10:01,303 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 862 transitions. Word has length 57 [2020-09-21 10:10:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:10:01,304 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 862 transitions. [2020-09-21 10:10:01,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:10:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 862 transitions. [2020-09-21 10:10:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 10:10:01,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:10:01,308 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] [2020-09-21 10:10:01,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:10:01,309 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:10:01,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:10:01,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2094502109, now seen corresponding path program 1 times [2020-09-21 10:10:01,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:10:01,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869259640] [2020-09-21 10:10:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:10:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,698 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:10:01,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:10:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:10:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:10:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:10:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:10:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:10:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:10:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:10:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:10:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:10:01,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869259640] [2020-09-21 10:10:01,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:10:01,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:10:01,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693696368] [2020-09-21 10:10:01,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:10:01,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:10:01,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:10:01,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:10:01,796 INFO L87 Difference]: Start difference. First operand 694 states and 862 transitions. Second operand 6 states. [2020-09-21 10:10:02,173 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:10:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:10:03,116 INFO L93 Difference]: Finished difference Result 1115 states and 1437 transitions. [2020-09-21 10:10:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:10:03,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-21 10:10:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:10:03,120 INFO L225 Difference]: With dead ends: 1115 [2020-09-21 10:10:03,120 INFO L226 Difference]: Without dead ends: 445 [2020-09-21 10:10:03,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:10:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-09-21 10:10:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 420. [2020-09-21 10:10:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-09-21 10:10:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 479 transitions. [2020-09-21 10:10:03,189 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 479 transitions. Word has length 61 [2020-09-21 10:10:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:10:03,190 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 479 transitions. [2020-09-21 10:10:03,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:10:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 479 transitions. [2020-09-21 10:10:03,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:10:03,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:10:03,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:10:03,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:10:03,193 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:10:03,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:10:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1427524119, now seen corresponding path program 1 times [2020-09-21 10:10:03,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:10:03,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682506593] [2020-09-21 10:10:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:10:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,595 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:10:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:10:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:10:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:10:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:10:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:10:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:10:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:10:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:10:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:10:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:10:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:10:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 10:10:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:10:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:10:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 10:10:03,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682506593] [2020-09-21 10:10:03,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:10:03,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:10:03,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720764684] [2020-09-21 10:10:03,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:10:03,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:10:03,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:10:03,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:10:03,841 INFO L87 Difference]: Start difference. First operand 420 states and 479 transitions. Second operand 10 states. [2020-09-21 10:10:04,501 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-09-21 10:10:05,162 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:10:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:10:06,199 INFO L93 Difference]: Finished difference Result 562 states and 654 transitions. [2020-09-21 10:10:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:10:06,200 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-21 10:10:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:10:06,201 INFO L225 Difference]: With dead ends: 562 [2020-09-21 10:10:06,201 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:10:06,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:10:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:10:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:10:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:10:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:10:06,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2020-09-21 10:10:06,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:10:06,210 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:10:06,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:10:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:10:06,210 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:10:06,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:10:06,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:10:06,408 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:06,762 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:06,927 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:07,289 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:07,634 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:08,178 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 231 [2020-09-21 10:10:08,356 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:08,519 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:08,858 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:09,200 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:09,532 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:09,869 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:10,203 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:10,370 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:10,530 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:10,868 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:11,201 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:11,372 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:11,531 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:11,798 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-21 10:10:12,063 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-21 10:10:12,640 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2020-09-21 10:10:13,097 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 222 [2020-09-21 10:10:13,604 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 219 [2020-09-21 10:10:14,184 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 221 [2020-09-21 10:10:14,439 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 190 [2020-09-21 10:10:14,596 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:14,754 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:14,909 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:10:15,243 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:15,579 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:15,903 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-09-21 10:10:16,249 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-09-21 10:10:16,389 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:10:16,736 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-09-21 10:10:16,905 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:17,063 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:17,394 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:17,730 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:18,055 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-09-21 10:10:18,387 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:18,546 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:10:18,878 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:19,203 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-09-21 10:10:19,361 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:19,519 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:19,674 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:10:20,005 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:20,164 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:20,501 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:20,662 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:20,996 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:21,329 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:21,660 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-09-21 10:10:21,992 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:22,150 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:22,303 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:10:22,461 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:22,793 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:23,125 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:23,456 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:23,830 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 31 [2020-09-21 10:10:24,358 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 29 [2020-09-21 10:10:24,700 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:25,008 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-21 10:10:25,335 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-21 10:10:25,669 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:26,000 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:26,323 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-09-21 10:10:26,641 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 189 [2020-09-21 10:10:26,798 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:26,956 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:10:27,116 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:10:27,449 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-09-21 10:10:27,781 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:28,106 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-09-21 10:10:28,500 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-21 10:10:28,751 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-21 10:10:29,197 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 220 [2020-09-21 10:10:29,766 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-09-21 10:10:30,319 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-09-21 10:10:30,768 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 220 [2020-09-21 10:10:31,095 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-21 10:10:31,480 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 31 [2020-09-21 10:10:31,828 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:32,169 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:32,551 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 31 [2020-09-21 10:10:32,881 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:33,239 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:33,583 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:33,919 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-09-21 10:10:34,260 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-21 10:10:34,781 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2020-09-21 10:10:35,302 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2020-09-21 10:10:35,630 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-21 10:10:36,153 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2020-09-21 10:10:36,988 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 18 [2020-09-21 10:10:37,511 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2020-09-21 10:10:37,661 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 22 [2020-09-21 10:10:37,849 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 1 [2020-09-21 10:10:37,960 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-21 10:10:38,786 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 18 [2020-09-21 10:10:39,612 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 18 [2020-09-21 10:10:40,291 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 19 [2020-09-21 10:10:40,489 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-09-21 10:10:41,010 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 24 [2020-09-21 10:10:41,274 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:10:41,819 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 24 [2020-09-21 10:10:42,667 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 21 [2020-09-21 10:10:42,858 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-09-21 10:10:43,616 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 18 [2020-09-21 10:10:43,728 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-21 10:10:44,508 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 18 [2020-09-21 10:10:44,615 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-21 10:10:45,519 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 16 [2020-09-21 10:10:45,709 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-09-21 10:10:46,591 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 22