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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:20:19,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:20:19,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:20:19,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:20:19,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:20:19,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:20:19,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:20:19,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:20:19,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:20:19,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:20:19,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:20:19,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:20:19,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:20:19,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:20:19,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:20:19,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:20:19,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:20:19,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:20:19,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:20:19,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:20:19,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:20:19,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:20:19,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:20:19,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:20:19,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:20:19,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:20:19,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:20:19,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:20:19,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:20:19,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:20:19,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:20:19,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:20:19,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:20:19,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:20:19,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:20:19,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:20:19,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:20:19,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:20:19,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:20:19,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:20:19,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:20:19,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:20:19,125 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:20:19,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:20:19,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:20:19,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:20:19,127 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:20:19,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:20:19,127 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:20:19,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:20:19,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:20:19,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:20:19,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:20:19,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:20:19,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:20:19,129 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:20:19,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:20:19,129 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:20:19,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:20:19,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:20:19,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:20:19,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:20:19,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:20:19,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:19,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:20:19,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:20:19,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:20:19,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:20:19,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:20:19,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:20:19,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:20:19,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:20:19,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:20:19,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:20:19,441 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:20:19,442 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:20:19,443 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-10-15 03:20:19,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1857b56c3/b52c46b2ea094a2f855268c8124cab4c/FLAGedb7a78bd [2019-10-15 03:20:20,060 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:20:20,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-10-15 03:20:20,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1857b56c3/b52c46b2ea094a2f855268c8124cab4c/FLAGedb7a78bd [2019-10-15 03:20:20,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1857b56c3/b52c46b2ea094a2f855268c8124cab4c [2019-10-15 03:20:20,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:20:20,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:20:20,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:20,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:20:20,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:20:20,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:20" (1/1) ... [2019-10-15 03:20:20,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283ca1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:20, skipping insertion in model container [2019-10-15 03:20:20,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:20" (1/1) ... [2019-10-15 03:20:20,376 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:20:20,440 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:20:20,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:20,994 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:20:21,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:21,139 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:20:21,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21 WrapperNode [2019-10-15 03:20:21,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:21,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:20:21,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:20:21,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:20:21,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (1/1) ... [2019-10-15 03:20:21,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (1/1) ... [2019-10-15 03:20:21,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (1/1) ... [2019-10-15 03:20:21,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (1/1) ... [2019-10-15 03:20:21,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (1/1) ... [2019-10-15 03:20:21,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (1/1) ... [2019-10-15 03:20:21,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (1/1) ... [2019-10-15 03:20:21,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:20:21,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:20:21,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:20:21,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:20:21,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-15 03:20:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:20:21,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:20:21,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:21,286 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:20:21,286 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:20:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:20:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:20:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:20:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:20:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:20:21,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:20:21,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:20:21,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:20:21,288 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:20:21,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:20:21,288 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:20:21,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:20:21,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:20:21,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:20:21,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:20:21,289 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:20:21,289 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:20:21,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:21,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:21,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:21,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:20:21,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:20:21,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:20:21,291 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:20:21,291 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:20:21,291 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:21,291 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:20:21,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:21,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:20:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:21,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:20:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:20:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:20:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:20:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:20:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:20:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:20:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:20:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:20:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:20:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:20:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:20:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:20:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:20:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:21,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:20:21,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:20:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:20:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:20:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:20:22,832 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:20:22,833 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:20:22,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:22 BoogieIcfgContainer [2019-10-15 03:20:22,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:20:22,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:20:22,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:20:22,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:20:22,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:20:20" (1/3) ... [2019-10-15 03:20:22,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6348443d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:22, skipping insertion in model container [2019-10-15 03:20:22,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:21" (2/3) ... [2019-10-15 03:20:22,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6348443d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:22, skipping insertion in model container [2019-10-15 03:20:22,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:22" (3/3) ... [2019-10-15 03:20:22,847 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product60.cil.c [2019-10-15 03:20:22,860 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:20:22,870 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:20:22,882 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:20:22,918 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:20:22,919 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:20:22,919 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:20:22,920 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:20:22,921 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:20:22,921 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:20:22,922 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:20:22,922 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:20:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2019-10-15 03:20:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:20:22,955 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:22,956 INFO L380 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] [2019-10-15 03:20:22,958 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash 203835508, now seen corresponding path program 1 times [2019-10-15 03:20:22,976 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:22,976 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225932086] [2019-10-15 03:20:22,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:23,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225932086] [2019-10-15 03:20:23,374 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:23,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:20:23,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550749703] [2019-10-15 03:20:23,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:20:23,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:23,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:20:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:23,397 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 2 states. [2019-10-15 03:20:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:23,443 INFO L93 Difference]: Finished difference Result 258 states and 313 transitions. [2019-10-15 03:20:23,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:20:23,447 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-15 03:20:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:23,470 INFO L225 Difference]: With dead ends: 258 [2019-10-15 03:20:23,470 INFO L226 Difference]: Without dead ends: 131 [2019-10-15 03:20:23,482 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-10-15 03:20:23,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-10-15 03:20:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-10-15 03:20:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2019-10-15 03:20:23,575 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 46 [2019-10-15 03:20:23,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:23,576 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2019-10-15 03:20:23,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:20:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2019-10-15 03:20:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:20:23,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:23,585 INFO L380 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] [2019-10-15 03:20:23,585 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash -245440472, now seen corresponding path program 1 times [2019-10-15 03:20:23,586 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:23,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109116106] [2019-10-15 03:20:23,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:23,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109116106] [2019-10-15 03:20:23,776 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:23,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:23,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726084607] [2019-10-15 03:20:23,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:23,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:23,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:23,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:23,782 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 3 states. [2019-10-15 03:20:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:23,816 INFO L93 Difference]: Finished difference Result 206 states and 238 transitions. [2019-10-15 03:20:23,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:23,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 03:20:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:23,820 INFO L225 Difference]: With dead ends: 206 [2019-10-15 03:20:23,820 INFO L226 Difference]: Without dead ends: 123 [2019-10-15 03:20:23,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-15 03:20:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-10-15 03:20:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-15 03:20:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2019-10-15 03:20:23,844 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 47 [2019-10-15 03:20:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:23,845 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2019-10-15 03:20:23,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:23,845 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2019-10-15 03:20:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 03:20:23,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:23,855 INFO L380 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] [2019-10-15 03:20:23,855 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:23,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:23,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1796950977, now seen corresponding path program 1 times [2019-10-15 03:20:23,856 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:23,857 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109182775] [2019-10-15 03:20:23,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:24,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109182775] [2019-10-15 03:20:24,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:24,058 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:24,058 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816765072] [2019-10-15 03:20:24,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:24,061 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:24,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:24,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:24,061 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 7 states. [2019-10-15 03:20:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:24,589 INFO L93 Difference]: Finished difference Result 365 states and 435 transitions. [2019-10-15 03:20:24,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:20:24,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-10-15 03:20:24,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:24,597 INFO L225 Difference]: With dead ends: 365 [2019-10-15 03:20:24,597 INFO L226 Difference]: Without dead ends: 267 [2019-10-15 03:20:24,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:20:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2019-10-15 03:20:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 255. [2019-10-15 03:20:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2019-10-15 03:20:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2019-10-15 03:20:24,654 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 51 [2019-10-15 03:20:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:24,654 INFO L462 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2019-10-15 03:20:24,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2019-10-15 03:20:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-15 03:20:24,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:24,658 INFO L380 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] [2019-10-15 03:20:24,658 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash -185841491, now seen corresponding path program 1 times [2019-10-15 03:20:24,665 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:24,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611758490] [2019-10-15 03:20:24,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:24,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:24,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:24,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611758490] [2019-10-15 03:20:24,834 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:24,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:20:24,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770426456] [2019-10-15 03:20:24,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:24,837 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:24,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:24,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:20:24,837 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand 6 states. [2019-10-15 03:20:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:25,141 INFO L93 Difference]: Finished difference Result 697 states and 846 transitions. [2019-10-15 03:20:25,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:20:25,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-15 03:20:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:25,148 INFO L225 Difference]: With dead ends: 697 [2019-10-15 03:20:25,148 INFO L226 Difference]: Without dead ends: 467 [2019-10-15 03:20:25,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:20:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-15 03:20:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 455. [2019-10-15 03:20:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2019-10-15 03:20:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2019-10-15 03:20:25,225 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 55 [2019-10-15 03:20:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:25,225 INFO L462 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2019-10-15 03:20:25,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2019-10-15 03:20:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-15 03:20:25,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:25,228 INFO L380 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] [2019-10-15 03:20:25,229 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:25,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2036644305, now seen corresponding path program 1 times [2019-10-15 03:20:25,229 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:25,230 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915920095] [2019-10-15 03:20:25,230 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:25,230 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:25,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:25,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915920095] [2019-10-15 03:20:25,332 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:25,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:25,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157469566] [2019-10-15 03:20:25,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:25,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:25,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:25,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:25,335 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 7 states. [2019-10-15 03:20:26,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:26,041 INFO L93 Difference]: Finished difference Result 1187 states and 1538 transitions. [2019-10-15 03:20:26,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:20:26,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-15 03:20:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:26,048 INFO L225 Difference]: With dead ends: 1187 [2019-10-15 03:20:26,049 INFO L226 Difference]: Without dead ends: 757 [2019-10-15 03:20:26,051 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:20:26,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2019-10-15 03:20:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 668. [2019-10-15 03:20:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2019-10-15 03:20:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 796 transitions. [2019-10-15 03:20:26,108 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 796 transitions. Word has length 58 [2019-10-15 03:20:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:26,109 INFO L462 AbstractCegarLoop]: Abstraction has 668 states and 796 transitions. [2019-10-15 03:20:26,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 796 transitions. [2019-10-15 03:20:26,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-15 03:20:26,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:26,113 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:20:26,113 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash -2002651380, now seen corresponding path program 1 times [2019-10-15 03:20:26,114 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:26,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051901927] [2019-10-15 03:20:26,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:26,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:26,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:20:26,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051901927] [2019-10-15 03:20:26,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373136227] [2019-10-15 03:20:26,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:26,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:20:26,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:26,696 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:26,816 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:20:26,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-15 03:20:26,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673996125] [2019-10-15 03:20:26,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:26,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:26,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:26,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:26,818 INFO L87 Difference]: Start difference. First operand 668 states and 796 transitions. Second operand 3 states. [2019-10-15 03:20:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:26,910 INFO L93 Difference]: Finished difference Result 945 states and 1152 transitions. [2019-10-15 03:20:26,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:26,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2019-10-15 03:20:26,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:26,917 INFO L225 Difference]: With dead ends: 945 [2019-10-15 03:20:26,918 INFO L226 Difference]: Without dead ends: 942 [2019-10-15 03:20:26,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:26,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2019-10-15 03:20:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 914. [2019-10-15 03:20:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2019-10-15 03:20:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1115 transitions. [2019-10-15 03:20:26,990 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1115 transitions. Word has length 89 [2019-10-15 03:20:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:26,990 INFO L462 AbstractCegarLoop]: Abstraction has 914 states and 1115 transitions. [2019-10-15 03:20:26,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1115 transitions. [2019-10-15 03:20:26,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 03:20:26,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:26,996 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:27,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:27,203 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:27,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:27,204 INFO L82 PathProgramCache]: Analyzing trace with hash -479479501, now seen corresponding path program 1 times [2019-10-15 03:20:27,204 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:27,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127627134] [2019-10-15 03:20:27,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:20:27,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127627134] [2019-10-15 03:20:27,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834435366] [2019-10-15 03:20:27,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:27,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 03:20:27,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:20:27,794 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 03:20:28,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:28,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 12] total 25 [2019-10-15 03:20:28,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260522720] [2019-10-15 03:20:28,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:20:28,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:28,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:20:28,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2019-10-15 03:20:28,594 INFO L87 Difference]: Start difference. First operand 914 states and 1115 transitions. Second operand 11 states. [2019-10-15 03:20:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:29,613 INFO L93 Difference]: Finished difference Result 2088 states and 2638 transitions. [2019-10-15 03:20:29,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:20:29,613 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2019-10-15 03:20:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:29,621 INFO L225 Difference]: With dead ends: 2088 [2019-10-15 03:20:29,621 INFO L226 Difference]: Without dead ends: 1199 [2019-10-15 03:20:29,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2019-10-15 03:20:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2019-10-15 03:20:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1175. [2019-10-15 03:20:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-15 03:20:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1426 transitions. [2019-10-15 03:20:29,713 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1426 transitions. Word has length 142 [2019-10-15 03:20:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:29,716 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1426 transitions. [2019-10-15 03:20:29,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:20:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1426 transitions. [2019-10-15 03:20:29,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 03:20:29,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:29,724 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:29,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:29,930 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:29,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1729625035, now seen corresponding path program 1 times [2019-10-15 03:20:29,931 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:29,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314271682] [2019-10-15 03:20:29,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:29,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:29,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-15 03:20:30,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314271682] [2019-10-15 03:20:30,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437484098] [2019-10-15 03:20:30,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:30,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:20:30,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:30,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 03:20:30,740 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:31,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:32,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:32,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:32,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:32,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-15 03:20:32,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:32,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-15 03:20:32,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237383661] [2019-10-15 03:20:32,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:20:32,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:32,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:20:32,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:20:32,418 INFO L87 Difference]: Start difference. First operand 1175 states and 1426 transitions. Second operand 14 states. [2019-10-15 03:20:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:35,187 INFO L93 Difference]: Finished difference Result 3192 states and 4014 transitions. [2019-10-15 03:20:35,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-15 03:20:35,188 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2019-10-15 03:20:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:35,213 INFO L225 Difference]: With dead ends: 3192 [2019-10-15 03:20:35,213 INFO L226 Difference]: Without dead ends: 2042 [2019-10-15 03:20:35,220 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 355 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-10-15 03:20:35,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2019-10-15 03:20:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1910. [2019-10-15 03:20:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-10-15 03:20:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2334 transitions. [2019-10-15 03:20:35,411 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2334 transitions. Word has length 189 [2019-10-15 03:20:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:35,412 INFO L462 AbstractCegarLoop]: Abstraction has 1910 states and 2334 transitions. [2019-10-15 03:20:35,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:20:35,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2334 transitions. [2019-10-15 03:20:35,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-15 03:20:35,422 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:35,422 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:35,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:35,629 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:35,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:35,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2112061461, now seen corresponding path program 1 times [2019-10-15 03:20:35,630 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:35,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819366211] [2019-10-15 03:20:35,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:35,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:35,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 41 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-15 03:20:36,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819366211] [2019-10-15 03:20:36,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917622223] [2019-10-15 03:20:36,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:36,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-15 03:20:36,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:36,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:36,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:36,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:36,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 94 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:20:36,790 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:37,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:37,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:38,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:38,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:38,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 47 proven. 12 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-15 03:20:38,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832899082] [2019-10-15 03:20:38,332 INFO L162 IcfgInterpreter]: Started Sifa with 111 locations of interest [2019-10-15 03:20:38,333 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:20:38,342 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:20:38,362 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:20:38,363 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:20:46,213 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:20:47,902 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:20:48,033 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:48,195 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:48,310 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:48,514 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:48,714 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:48,911 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:49,121 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:49,475 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:20:49,619 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:49,756 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:49,886 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:50,027 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:50,144 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:50,152 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:20:50,432 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:20:50,434 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 550 for LOIs [2019-10-15 03:20:50,537 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,663 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,822 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:50,936 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,041 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,166 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,287 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,416 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,541 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,737 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 550 [2019-10-15 03:20:51,964 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,111 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,328 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,644 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,747 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,872 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:52,992 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,195 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:53,314 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,678 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,995 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,200 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:54,319 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,549 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:54,669 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,989 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,125 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,235 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,374 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,614 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:55,723 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,940 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,068 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,179 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,299 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,450 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:56,581 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:56,717 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:56,963 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:20:57,073 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:57,198 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:57,389 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:20:57,498 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:57,670 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:57,783 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:57,893 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:58,015 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568