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_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:23:45,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:23:45,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:23:45,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:23:45,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:23:45,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:23:45,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:23:45,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:23:45,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:23:45,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:23:45,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:23:45,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:23:45,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:23:45,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:23:45,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:23:45,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:23:45,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:23:45,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:23:45,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:23:45,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:23:45,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:23:45,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:23:45,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:23:45,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:23:45,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:23:45,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:23:45,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:23:45,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:23:45,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:23:45,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:23:45,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:23:45,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:23:45,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:23:45,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:23:45,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:23:45,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:23:45,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:23:45,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:23:45,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:23:45,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:23:45,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:23:45,405 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 03:23:45,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:23:45,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:23:45,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:23:45,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:23:45,445 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:23:45,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:23:45,445 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:23:45,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:23:45,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:23:45,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:23:45,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:23:45,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:23:45,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:23:45,447 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:23:45,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:23:45,448 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:23:45,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:23:45,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:23:45,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:23:45,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:23:45,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:23:45,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:45,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:23:45,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:23:45,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:23:45,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:23:45,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:23:45,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:23:45,451 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 03:23:45,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:23:45,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:23:45,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:23:45,830 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:23:45,831 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:23:45,831 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-10-15 03:23:45,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82cfdac99/6f7bd3675bf047fd980bc59fc09c058f/FLAG1760db4ea [2019-10-15 03:23:46,456 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:23:46,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-10-15 03:23:46,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82cfdac99/6f7bd3675bf047fd980bc59fc09c058f/FLAG1760db4ea [2019-10-15 03:23:46,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82cfdac99/6f7bd3675bf047fd980bc59fc09c058f [2019-10-15 03:23:46,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:23:46,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:23:46,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:46,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:23:46,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:23:46,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:46" (1/1) ... [2019-10-15 03:23:46,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b893c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:46, skipping insertion in model container [2019-10-15 03:23:46,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:46" (1/1) ... [2019-10-15 03:23:46,704 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:23:46,753 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:23:47,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:47,327 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:23:47,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:47,482 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:23:47,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47 WrapperNode [2019-10-15 03:23:47,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:47,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:23:47,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:23:47,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:23:47,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:23:47,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:23:47,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:23:47,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:23:47,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (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 03:23:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:23:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:23:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:23:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:23:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:23:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:23:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:23:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:23:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:23:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:23:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:23:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:23:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:23:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:23:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:23:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:23:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:23:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:23:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:23:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:23:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:23:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:23:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:23:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:23:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:23:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:23:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:23:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:23:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:23:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:23:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:23:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:23:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:23:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:23:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:23:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:23:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:23:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:23:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:23:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:23:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:23:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:23:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:23:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:23:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:23:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:23:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:23:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:23:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:23:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:23:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:23:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:23:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:23:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:23:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:23:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:23:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:23:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:23:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:23:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:23:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:23:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:23:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:23:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:23:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:23:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:23:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:23:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:23:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:23:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:23:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:23:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:23:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:23:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:23:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:23:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:23:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:23:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:23:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:23:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:23:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:23:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:23:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:23:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:23:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:23:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:23:49,283 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:23:49,283 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:23:49,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:49 BoogieIcfgContainer [2019-10-15 03:23:49,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:23:49,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:23:49,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:23:49,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:23:49,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:46" (1/3) ... [2019-10-15 03:23:49,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230837a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:49, skipping insertion in model container [2019-10-15 03:23:49,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (2/3) ... [2019-10-15 03:23:49,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230837a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:49, skipping insertion in model container [2019-10-15 03:23:49,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:49" (3/3) ... [2019-10-15 03:23:49,294 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2019-10-15 03:23:49,304 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:23:49,313 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:23:49,324 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:23:49,352 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:23:49,352 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:23:49,352 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:23:49,353 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:23:49,353 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:23:49,353 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:23:49,353 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:23:49,353 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:23:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-10-15 03:23:49,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:23:49,388 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:49,389 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] [2019-10-15 03:23:49,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:49,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash 616175143, now seen corresponding path program 1 times [2019-10-15 03:23:49,411 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:49,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386490702] [2019-10-15 03:23:49,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:49,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:49,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:49,773 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 03:23:49,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386490702] [2019-10-15 03:23:49,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:49,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:23:49,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629229601] [2019-10-15 03:23:49,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:23:49,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:49,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:23:49,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:49,793 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-10-15 03:23:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:49,836 INFO L93 Difference]: Finished difference Result 264 states and 319 transitions. [2019-10-15 03:23:49,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:23:49,838 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:23:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:49,852 INFO L225 Difference]: With dead ends: 264 [2019-10-15 03:23:49,852 INFO L226 Difference]: Without dead ends: 134 [2019-10-15 03:23:49,864 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 03:23:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-10-15 03:23:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-10-15 03:23:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-15 03:23:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2019-10-15 03:23:49,935 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 52 [2019-10-15 03:23:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:49,936 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2019-10-15 03:23:49,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:23:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2019-10-15 03:23:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:23:49,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:49,941 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] [2019-10-15 03:23:49,941 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:49,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1765384496, now seen corresponding path program 1 times [2019-10-15 03:23:49,942 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:49,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447995213] [2019-10-15 03:23:49,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:49,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:49,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:50,135 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 03:23:50,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447995213] [2019-10-15 03:23:50,135 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:50,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:23:50,136 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146649093] [2019-10-15 03:23:50,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:23:50,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:50,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:23:50,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:50,140 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand 3 states. [2019-10-15 03:23:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:50,185 INFO L93 Difference]: Finished difference Result 215 states and 247 transitions. [2019-10-15 03:23:50,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:23:50,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:23:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:50,191 INFO L225 Difference]: With dead ends: 215 [2019-10-15 03:23:50,192 INFO L226 Difference]: Without dead ends: 126 [2019-10-15 03:23:50,195 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 03:23:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-15 03:23:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-15 03:23:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-15 03:23:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2019-10-15 03:23:50,216 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 53 [2019-10-15 03:23:50,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:50,216 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2019-10-15 03:23:50,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:23:50,217 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2019-10-15 03:23:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 03:23:50,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:50,220 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] [2019-10-15 03:23:50,220 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1982343881, now seen corresponding path program 1 times [2019-10-15 03:23:50,221 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:50,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817560322] [2019-10-15 03:23:50,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:50,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:50,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:50,410 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 03:23:50,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817560322] [2019-10-15 03:23:50,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:50,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:50,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449926792] [2019-10-15 03:23:50,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:50,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:50,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:50,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:50,413 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 7 states. [2019-10-15 03:23:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:51,038 INFO L93 Difference]: Finished difference Result 377 states and 446 transitions. [2019-10-15 03:23:51,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:23:51,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-15 03:23:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:51,048 INFO L225 Difference]: With dead ends: 377 [2019-10-15 03:23:51,048 INFO L226 Difference]: Without dead ends: 276 [2019-10-15 03:23:51,051 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 03:23:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-10-15 03:23:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 268. [2019-10-15 03:23:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-15 03:23:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 317 transitions. [2019-10-15 03:23:51,118 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 317 transitions. Word has length 56 [2019-10-15 03:23:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:51,119 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 317 transitions. [2019-10-15 03:23:51,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:51,122 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 317 transitions. [2019-10-15 03:23:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:23:51,126 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:51,126 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] [2019-10-15 03:23:51,127 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:51,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:51,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1295801906, now seen corresponding path program 1 times [2019-10-15 03:23:51,128 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:51,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459263384] [2019-10-15 03:23:51,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:51,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:51,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:23:51,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459263384] [2019-10-15 03:23:51,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:51,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:51,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309620961] [2019-10-15 03:23:51,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:51,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:51,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:51,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:51,324 INFO L87 Difference]: Start difference. First operand 268 states and 317 transitions. Second operand 7 states. [2019-10-15 03:23:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:52,035 INFO L93 Difference]: Finished difference Result 680 states and 874 transitions. [2019-10-15 03:23:52,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:23:52,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:23:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:52,041 INFO L225 Difference]: With dead ends: 680 [2019-10-15 03:23:52,041 INFO L226 Difference]: Without dead ends: 437 [2019-10-15 03:23:52,043 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 03:23:52,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-10-15 03:23:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 387. [2019-10-15 03:23:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-10-15 03:23:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 458 transitions. [2019-10-15 03:23:52,089 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 458 transitions. Word has length 61 [2019-10-15 03:23:52,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:52,090 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 458 transitions. [2019-10-15 03:23:52,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:52,090 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 458 transitions. [2019-10-15 03:23:52,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 03:23:52,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:52,093 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, 1, 1] [2019-10-15 03:23:52,093 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:52,094 INFO L82 PathProgramCache]: Analyzing trace with hash 601919314, now seen corresponding path program 1 times [2019-10-15 03:23:52,094 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:52,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406942044] [2019-10-15 03:23:52,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:52,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:52,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:52,343 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 03:23:52,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406942044] [2019-10-15 03:23:52,343 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:52,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:23:52,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842296438] [2019-10-15 03:23:52,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:23:52,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:52,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:23:52,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:23:52,346 INFO L87 Difference]: Start difference. First operand 387 states and 458 transitions. Second operand 12 states. [2019-10-15 03:23:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:53,323 INFO L93 Difference]: Finished difference Result 1149 states and 1406 transitions. [2019-10-15 03:23:53,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:23:53,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-15 03:23:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:53,330 INFO L225 Difference]: With dead ends: 1149 [2019-10-15 03:23:53,331 INFO L226 Difference]: Without dead ends: 787 [2019-10-15 03:23:53,333 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 [2019-10-15 03:23:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2019-10-15 03:23:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 765. [2019-10-15 03:23:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2019-10-15 03:23:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 926 transitions. [2019-10-15 03:23:53,397 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 926 transitions. Word has length 91 [2019-10-15 03:23:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:53,398 INFO L462 AbstractCegarLoop]: Abstraction has 765 states and 926 transitions. [2019-10-15 03:23:53,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:23:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 926 transitions. [2019-10-15 03:23:53,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 03:23:53,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:53,402 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, 1, 1, 1, 1, 1] [2019-10-15 03:23:53,402 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash -335301184, now seen corresponding path program 1 times [2019-10-15 03:23:53,403 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:53,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039756454] [2019-10-15 03:23:53,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:53,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:53,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:53,589 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 03:23:53,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039756454] [2019-10-15 03:23:53,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:53,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:23:53,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616465932] [2019-10-15 03:23:53,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:23:53,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:53,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:23:53,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:23:53,594 INFO L87 Difference]: Start difference. First operand 765 states and 926 transitions. Second operand 9 states. [2019-10-15 03:23:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:54,653 INFO L93 Difference]: Finished difference Result 2465 states and 3093 transitions. [2019-10-15 03:23:54,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:23:54,656 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2019-10-15 03:23:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:54,668 INFO L225 Difference]: With dead ends: 2465 [2019-10-15 03:23:54,669 INFO L226 Difference]: Without dead ends: 1884 [2019-10-15 03:23:54,672 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 [2019-10-15 03:23:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2019-10-15 03:23:54,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1610. [2019-10-15 03:23:54,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2019-10-15 03:23:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1968 transitions. [2019-10-15 03:23:54,794 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1968 transitions. Word has length 94 [2019-10-15 03:23:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:54,795 INFO L462 AbstractCegarLoop]: Abstraction has 1610 states and 1968 transitions. [2019-10-15 03:23:54,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:23:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1968 transitions. [2019-10-15 03:23:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:23:54,800 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:54,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:54,801 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:54,801 INFO L82 PathProgramCache]: Analyzing trace with hash 945574640, now seen corresponding path program 1 times [2019-10-15 03:23:54,802 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:54,802 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450388205] [2019-10-15 03:23:54,802 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:54,802 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:54,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:23:55,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450388205] [2019-10-15 03:23:55,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275923790] [2019-10-15 03:23:55,008 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 03:23:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:55,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:23:55,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:23:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:23:55,403 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:23:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:23:55,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1698410516] [2019-10-15 03:23:55,928 INFO L162 IcfgInterpreter]: Started Sifa with 113 locations of interest [2019-10-15 03:23:55,928 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:23:55,940 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:23:55,949 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:23:55,950 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:24:05,996 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:24:07,846 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:24:07,994 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:08,135 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:08,409 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:08,757 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:08,999 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:09,219 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:09,409 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:09,600 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:09,883 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:10,103 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:10,286 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:10,406 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:10,563 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:10,573 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:24:10,878 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:24:10,880 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:24:11,029 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:11,152 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:11,354 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:11,476 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:11,584 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:11,730 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:11,884 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:11,991 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:12,114 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:12,365 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:24:12,475 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:12,642 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,045 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,274 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:13,413 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,619 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:13,738 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,947 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:14,099 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,310 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:14,429 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,764 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,085 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,405 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,537 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:15,755 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,888 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,999 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:16,178 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:16,319 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:16,457 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:16,590 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:16,705 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:16,815 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:16,955 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:17,090 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:17,201 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:17,339 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:17,489 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:17,602 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:17,730 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:17,941 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:18,071 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:18,199 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:18,314 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:18,434 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:18,635 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:18,758 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:18,871 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:18,999 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:19,144 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:19,258 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:19,388 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:19,645 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:19,758 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:19,892 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:20,004 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,117 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,242 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:20,367 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:20,483 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:20,609 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:20,725 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:20,836 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:20,975 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:21,086 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:21,197 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:21,318 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:21,443 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:21,586 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:21,721 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:21,948 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:22,064 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:22,189 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:22,396 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:22,510 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:22,637 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:22,848 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:22,960 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:23,136 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:23,355 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:23,467 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:23,617 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:23,743 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:23,870 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:23,997 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,111 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,223 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,350 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,461 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,573 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,695 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,822 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,937 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:25,063 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:25,176 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:25,287 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:25,412 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:25,523 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:25,634 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:25,757 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564