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_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:18:50,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:18:50,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:18:50,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:18:50,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:18:50,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:18:50,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:18:50,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:18:50,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:18:50,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:18:50,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:18:50,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:18:50,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:18:50,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:18:50,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:18:50,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:18:50,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:18:50,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:18:50,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:18:50,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:18:50,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:18:50,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:18:50,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:18:50,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:18:50,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:18:50,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:18:50,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:18:50,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:18:50,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:18:50,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:18:50,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:18:50,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:18:50,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:18:50,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:18:50,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:18:50,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:18:50,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:18:50,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:18:50,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:18:50,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:18:50,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:18:50,155 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 [2019-10-13 23:18:50,179 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:18:50,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:18:50,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:18:50,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:18:50,182 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:18:50,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:18:50,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:18:50,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:18:50,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:18:50,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:18:50,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:18:50,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:18:50,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:18:50,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:18:50,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:18:50,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:18:50,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:18:50,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:18:50,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:18:50,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:18:50,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:18:50,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:50,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:18:50,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:18:50,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:18:50,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:18:50,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:18:50,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:18:50,189 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 [2019-10-13 23:18:50,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:18:50,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:18:50,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:18:50,513 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:18:50,513 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:18:50,514 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-10-13 23:18:50,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d7b238cb/ccb681a387054c008ea5ca6c4c92f03f/FLAG17b2b00f4 [2019-10-13 23:18:51,144 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:18:51,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-10-13 23:18:51,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d7b238cb/ccb681a387054c008ea5ca6c4c92f03f/FLAG17b2b00f4 [2019-10-13 23:18:51,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d7b238cb/ccb681a387054c008ea5ca6c4c92f03f [2019-10-13 23:18:51,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:18:51,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:18:51,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:51,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:18:51,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:18:51,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2536d7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51, skipping insertion in model container [2019-10-13 23:18:51,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,477 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:18:51,547 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:18:51,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:51,982 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:18:52,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:52,149 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:18:52,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52 WrapperNode [2019-10-13 23:18:52,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:52,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:18:52,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:18:52,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:18:52,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:18:52,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:18:52,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:18:52,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:18:52,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (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 [2019-10-13 23:18:52,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:18:52,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:18:52,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:52,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:52,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:52,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:52,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:18:52,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:18:52,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:18:52,341 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:18:52,341 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:18:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:18:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:18:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:18:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:18:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:18:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:18:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:18:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:18:52,345 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:18:52,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:18:52,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:18:52,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:18:52,345 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:18:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:18:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:18:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:18:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:18:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:18:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:18:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:18:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:18:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:18:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:18:52,348 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:18:52,348 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:18:52,348 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:18:52,348 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:18:52,348 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:18:52,349 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:18:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:18:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:18:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:18:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:18:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:18:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:18:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:18:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:18:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:18:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:18:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:18:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:18:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:18:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:18:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:18:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:18:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:18:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:18:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:18:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:18:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:18:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:18:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:18:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:18:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:18:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:18:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:18:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:18:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:18:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:18:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:18:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:18:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:18:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:18:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:18:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:18:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:18:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:18:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:18:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:18:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:18:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:18:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:18:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:18:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:18:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:18:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:18:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:18:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:18:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:18:54,207 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:18:54,207 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:18:54,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:54 BoogieIcfgContainer [2019-10-13 23:18:54,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:18:54,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:18:54,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:18:54,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:18:54,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:51" (1/3) ... [2019-10-13 23:18:54,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7730fc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:54, skipping insertion in model container [2019-10-13 23:18:54,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (2/3) ... [2019-10-13 23:18:54,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7730fc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:54, skipping insertion in model container [2019-10-13 23:18:54,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:54" (3/3) ... [2019-10-13 23:18:54,218 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2019-10-13 23:18:54,229 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:18:54,238 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:18:54,249 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:18:54,274 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:18:54,274 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:18:54,275 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:18:54,275 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:18:54,275 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:18:54,275 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:18:54,275 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:18:54,275 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:18:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2019-10-13 23:18:54,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:18:54,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:54,311 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] [2019-10-13 23:18:54,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:54,319 INFO L82 PathProgramCache]: Analyzing trace with hash -154718265, now seen corresponding path program 1 times [2019-10-13 23:18:54,329 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:54,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906002855] [2019-10-13 23:18:54,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:54,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906002855] [2019-10-13 23:18:54,693 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:54,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:18:54,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574808563] [2019-10-13 23:18:54,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:18:54,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:54,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:18:54,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:54,726 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 2 states. [2019-10-13 23:18:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:54,774 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2019-10-13 23:18:54,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:18:54,776 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:18:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:54,789 INFO L225 Difference]: With dead ends: 244 [2019-10-13 23:18:54,789 INFO L226 Difference]: Without dead ends: 124 [2019-10-13 23:18:54,794 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 [2019-10-13 23:18:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-10-13 23:18:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-10-13 23:18:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-13 23:18:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2019-10-13 23:18:54,855 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2019-10-13 23:18:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:54,856 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2019-10-13 23:18:54,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:18:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2019-10-13 23:18:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:18:54,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:54,861 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] [2019-10-13 23:18:54,862 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash -213368300, now seen corresponding path program 1 times [2019-10-13 23:18:54,863 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:54,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523201946] [2019-10-13 23:18:54,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:55,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523201946] [2019-10-13 23:18:55,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:18:55,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826824277] [2019-10-13 23:18:55,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:18:55,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:18:55,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:55,011 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 3 states. [2019-10-13 23:18:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:55,066 INFO L93 Difference]: Finished difference Result 192 states and 222 transitions. [2019-10-13 23:18:55,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:18:55,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:18:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:55,070 INFO L225 Difference]: With dead ends: 192 [2019-10-13 23:18:55,070 INFO L226 Difference]: Without dead ends: 116 [2019-10-13 23:18:55,072 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 [2019-10-13 23:18:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-10-13 23:18:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2019-10-13 23:18:55,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-10-13 23:18:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2019-10-13 23:18:55,089 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 53 [2019-10-13 23:18:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:55,090 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2019-10-13 23:18:55,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:18:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2019-10-13 23:18:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 23:18:55,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:55,094 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] [2019-10-13 23:18:55,094 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 761500064, now seen corresponding path program 1 times [2019-10-13 23:18:55,095 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:55,095 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918767599] [2019-10-13 23:18:55,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:55,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918767599] [2019-10-13 23:18:55,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:55,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028465348] [2019-10-13 23:18:55,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:55,292 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:55,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:55,293 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 7 states. [2019-10-13 23:18:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:55,824 INFO L93 Difference]: Finished difference Result 348 states and 416 transitions. [2019-10-13 23:18:55,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:18:55,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-13 23:18:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:55,830 INFO L225 Difference]: With dead ends: 348 [2019-10-13 23:18:55,832 INFO L226 Difference]: Without dead ends: 257 [2019-10-13 23:18:55,834 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 [2019-10-13 23:18:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-10-13 23:18:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 245. [2019-10-13 23:18:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-10-13 23:18:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 292 transitions. [2019-10-13 23:18:55,911 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 292 transitions. Word has length 57 [2019-10-13 23:18:55,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:55,912 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 292 transitions. [2019-10-13 23:18:55,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 292 transitions. [2019-10-13 23:18:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 23:18:55,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:55,919 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] [2019-10-13 23:18:55,920 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:55,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1246641193, now seen corresponding path program 1 times [2019-10-13 23:18:55,923 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:55,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245075188] [2019-10-13 23:18:55,924 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,924 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:18:56,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245075188] [2019-10-13 23:18:56,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:56,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:56,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167544719] [2019-10-13 23:18:56,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:56,116 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:56,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:56,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:56,119 INFO L87 Difference]: Start difference. First operand 245 states and 292 transitions. Second operand 7 states. [2019-10-13 23:18:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:56,842 INFO L93 Difference]: Finished difference Result 634 states and 825 transitions. [2019-10-13 23:18:56,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:18:56,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-13 23:18:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:56,848 INFO L225 Difference]: With dead ends: 634 [2019-10-13 23:18:56,848 INFO L226 Difference]: Without dead ends: 414 [2019-10-13 23:18:56,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:18:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-10-13 23:18:56,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 363. [2019-10-13 23:18:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2019-10-13 23:18:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 432 transitions. [2019-10-13 23:18:56,940 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 432 transitions. Word has length 61 [2019-10-13 23:18:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:56,942 INFO L462 AbstractCegarLoop]: Abstraction has 363 states and 432 transitions. [2019-10-13 23:18:56,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:56,943 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 432 transitions. [2019-10-13 23:18:56,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 23:18:56,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:56,945 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] [2019-10-13 23:18:56,946 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:56,946 INFO L82 PathProgramCache]: Analyzing trace with hash -44191392, now seen corresponding path program 1 times [2019-10-13 23:18:56,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:56,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376543305] [2019-10-13 23:18:56,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:57,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376543305] [2019-10-13 23:18:57,228 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:57,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:18:57,228 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446787365] [2019-10-13 23:18:57,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:18:57,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:57,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:18:57,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:18:57,230 INFO L87 Difference]: Start difference. First operand 363 states and 432 transitions. Second operand 12 states. [2019-10-13 23:18:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:58,106 INFO L93 Difference]: Finished difference Result 1110 states and 1343 transitions. [2019-10-13 23:18:58,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:18:58,107 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2019-10-13 23:18:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:58,114 INFO L225 Difference]: With dead ends: 1110 [2019-10-13 23:18:58,114 INFO L226 Difference]: Without dead ends: 772 [2019-10-13 23:18:58,116 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2019-10-13 23:18:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 750. [2019-10-13 23:18:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-13 23:18:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 896 transitions. [2019-10-13 23:18:58,187 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 896 transitions. Word has length 79 [2019-10-13 23:18:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:58,187 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 896 transitions. [2019-10-13 23:18:58,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:18:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 896 transitions. [2019-10-13 23:18:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 23:18:58,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:58,191 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] [2019-10-13 23:18:58,191 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:58,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:58,192 INFO L82 PathProgramCache]: Analyzing trace with hash -52921410, now seen corresponding path program 1 times [2019-10-13 23:18:58,192 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:58,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687638647] [2019-10-13 23:18:58,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:58,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687638647] [2019-10-13 23:18:58,319 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:58,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:18:58,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228702462] [2019-10-13 23:18:58,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:18:58,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:58,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:18:58,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:18:58,321 INFO L87 Difference]: Start difference. First operand 750 states and 896 transitions. Second operand 9 states. [2019-10-13 23:18:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:59,475 INFO L93 Difference]: Finished difference Result 2384 states and 2935 transitions. [2019-10-13 23:18:59,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:18:59,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2019-10-13 23:18:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:59,490 INFO L225 Difference]: With dead ends: 2384 [2019-10-13 23:18:59,490 INFO L226 Difference]: Without dead ends: 1821 [2019-10-13 23:18:59,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2019-10-13 23:18:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1541. [2019-10-13 23:18:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2019-10-13 23:18:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1857 transitions. [2019-10-13 23:18:59,636 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1857 transitions. Word has length 82 [2019-10-13 23:18:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:59,637 INFO L462 AbstractCegarLoop]: Abstraction has 1541 states and 1857 transitions. [2019-10-13 23:18:59,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:18:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1857 transitions. [2019-10-13 23:18:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:18:59,641 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:59,641 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] [2019-10-13 23:18:59,641 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:59,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:59,642 INFO L82 PathProgramCache]: Analyzing trace with hash -189281527, now seen corresponding path program 1 times [2019-10-13 23:18:59,642 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:59,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596789551] [2019-10-13 23:18:59,643 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:59,643 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:59,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:18:59,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596789551] [2019-10-13 23:18:59,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798705924] [2019-10-13 23:18:59,802 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 [2019-10-13 23:19:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:00,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:19:00,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:19:00,285 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:19:00,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [476526475] [2019-10-13 23:19:00,714 INFO L162 IcfgInterpreter]: Started Sifa with 101 locations of interest [2019-10-13 23:19:00,714 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:00,722 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:00,731 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:00,731 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:10,590 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:12,278 WARN L191 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:12,421 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:12,551 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:12,711 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:13,015 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,255 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,468 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,682 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,041 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:19:14,210 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,401 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,531 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,640 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,828 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,839 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:19:15,175 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:19:15,176 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:19:15,352 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:15,488 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:15,643 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:15,895 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,039 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,282 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,412 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,679 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-13 23:19:16,799 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,967 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,112 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,335 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,441 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,547 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,691 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,799 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,020 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,229 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,370 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,493 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,715 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,920 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,044 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,160 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,384 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,705 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,909 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,067 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,221 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,334 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,459 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,723 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:20,836 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,985 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,099 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,213 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,352 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,501 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,616 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,766 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,994 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:22,129 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:22,392 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,605 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:22,718 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:22,843 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,959 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:23,073 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:23,207 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:23,322 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:23,437 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:23,636 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:23,767 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:23,882 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,015 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:24,233 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:24,366 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,495 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:24,610 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,726 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,854 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:25,084 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:25,198 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:25,324 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:25,537 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:25,655 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:25,789 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:25,903 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,028 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,152 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,291 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:26,409 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:26,548 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:26,696 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:26,814 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:26,950 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,067 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,184 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,371 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,615 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:27,740 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:27,875 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:28,090 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:28,208 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:28,338 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:28,554 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:28,669 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,796 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,009 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:29,141 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,270 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,385 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,500 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,624 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,844 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:29,961 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,090 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,302 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:30,422 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,547 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,660 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,774 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,899 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,037 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:31,153 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:31,285 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:31,409 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568