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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:24:13,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:24:13,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:24:13,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:24:13,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:24:13,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:24:13,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:24:13,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:24:13,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:24:13,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:24:13,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:24:13,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:24:13,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:24:13,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:24:13,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:24:13,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:24:13,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:24:13,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:24:13,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:24:13,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:24:13,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:24:13,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:24:13,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:24:13,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:24:13,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:24:13,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:24:13,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:24:13,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:24:13,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:24:13,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:24:13,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:24:13,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:24:13,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:24:13,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:24:13,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:24:13,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:24:13,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:24:13,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:24:13,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:24:13,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:24:13,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:24:13,339 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 03:24:13,361 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:24:13,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:24:13,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:24:13,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:24:13,364 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:24:13,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:24:13,365 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:24:13,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:24:13,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:24:13,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:24:13,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:24:13,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:24:13,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:24:13,366 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:24:13,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:24:13,367 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:24:13,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:24:13,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:24:13,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:24:13,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:24:13,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:24:13,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:24:13,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:24:13,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:24:13,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:24:13,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:24:13,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:24:13,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:24:13,374 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 03:24:13,660 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:24:13,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:24:13,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:24:13,677 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:24:13,678 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:24:13,678 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-10-15 03:24:13,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7f74fa4/1d27cc1a6e3045fbb30640aded16869e/FLAG0d968f07f [2019-10-15 03:24:14,282 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:24:14,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-10-15 03:24:14,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7f74fa4/1d27cc1a6e3045fbb30640aded16869e/FLAG0d968f07f [2019-10-15 03:24:14,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7f74fa4/1d27cc1a6e3045fbb30640aded16869e [2019-10-15 03:24:14,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:24:14,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:24:14,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:24:14,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:24:14,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:24:14,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4432d2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14, skipping insertion in model container [2019-10-15 03:24:14,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:24:14,647 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:24:15,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:24:15,156 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:24:15,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:24:15,332 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:24:15,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15 WrapperNode [2019-10-15 03:24:15,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:24:15,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:24:15,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:24:15,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:24:15,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:24:15,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:24:15,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:24:15,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:24:15,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (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 03:24:15,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:24:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:24:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:24:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:24:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:24:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:24:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:24:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:24:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:24:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:24:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:24:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:24:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:24:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:24:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:24:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:24:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:24:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:24:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:24:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:24:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:24:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:24:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:24:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:24:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:24:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:24:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:24:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:24:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:24:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2019-10-15 03:24:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2019-10-15 03:24:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2019-10-15 03:24:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2019-10-15 03:24:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2019-10-15 03:24:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2019-10-15 03:24:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:24:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2019-10-15 03:24:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2019-10-15 03:24:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:24:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:24:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:24:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:24:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:24:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:24:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:24:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:24:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:24:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:24:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:24:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:24:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:24:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:24:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:24:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:24:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:24:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:24:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:24:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:24:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:24:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:24:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:24:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:24:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:24:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:24:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:24:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:24:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:24:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:24:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:24:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:24:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:24:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:24:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:24:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:24:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:24:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:24:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:24:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:24:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:24:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:24:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:24:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:24:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:24:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:24:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:24:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:24:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:24:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2019-10-15 03:24:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:24:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2019-10-15 03:24:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2019-10-15 03:24:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:24:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2019-10-15 03:24:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2019-10-15 03:24:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:24:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2019-10-15 03:24:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2019-10-15 03:24:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2019-10-15 03:24:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:24:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:24:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:24:17,042 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:24:17,043 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:24:17,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:24:17 BoogieIcfgContainer [2019-10-15 03:24:17,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:24:17,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:24:17,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:24:17,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:24:17,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:24:14" (1/3) ... [2019-10-15 03:24:17,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efb4017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:24:17, skipping insertion in model container [2019-10-15 03:24:17,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (2/3) ... [2019-10-15 03:24:17,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efb4017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:24:17, skipping insertion in model container [2019-10-15 03:24:17,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:24:17" (3/3) ... [2019-10-15 03:24:17,053 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.c [2019-10-15 03:24:17,063 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:24:17,072 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:24:17,083 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:24:17,121 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:24:17,121 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:24:17,121 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:24:17,122 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:24:17,122 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:24:17,122 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:24:17,122 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:24:17,122 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:24:17,144 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2019-10-15 03:24:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-15 03:24:17,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:17,157 INFO L380 BasicCegarLoop]: trace histogram [6, 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] [2019-10-15 03:24:17,159 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:17,168 INFO L82 PathProgramCache]: Analyzing trace with hash 405742149, now seen corresponding path program 1 times [2019-10-15 03:24:17,179 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:17,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511369195] [2019-10-15 03:24:17,180 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,181 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 03:24:17,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511369195] [2019-10-15 03:24:17,627 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:17,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:24:17,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557095660] [2019-10-15 03:24:17,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:24:17,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:17,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:24:17,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:24:17,652 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 2 states. [2019-10-15 03:24:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:17,734 INFO L93 Difference]: Finished difference Result 348 states and 438 transitions. [2019-10-15 03:24:17,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:24:17,736 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 76 [2019-10-15 03:24:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:17,753 INFO L225 Difference]: With dead ends: 348 [2019-10-15 03:24:17,753 INFO L226 Difference]: Without dead ends: 183 [2019-10-15 03:24:17,759 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 03:24:17,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-15 03:24:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2019-10-15 03:24:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-10-15 03:24:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2019-10-15 03:24:17,830 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 76 [2019-10-15 03:24:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:17,832 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2019-10-15 03:24:17,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:24:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2019-10-15 03:24:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 03:24:17,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:17,838 INFO L380 BasicCegarLoop]: trace histogram [6, 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] [2019-10-15 03:24:17,838 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:17,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1660428068, now seen corresponding path program 1 times [2019-10-15 03:24:17,872 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:17,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327350169] [2019-10-15 03:24:17,872 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,872 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 03:24:18,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327350169] [2019-10-15 03:24:18,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:18,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:24:18,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819527006] [2019-10-15 03:24:18,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:24:18,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:18,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:24:18,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:24:18,064 INFO L87 Difference]: Start difference. First operand 183 states and 224 transitions. Second operand 3 states. [2019-10-15 03:24:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:18,117 INFO L93 Difference]: Finished difference Result 294 states and 359 transitions. [2019-10-15 03:24:18,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:24:18,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-15 03:24:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:18,121 INFO L225 Difference]: With dead ends: 294 [2019-10-15 03:24:18,121 INFO L226 Difference]: Without dead ends: 175 [2019-10-15 03:24:18,124 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 03:24:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-15 03:24:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-15 03:24:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-15 03:24:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 213 transitions. [2019-10-15 03:24:18,144 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 213 transitions. Word has length 77 [2019-10-15 03:24:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:18,145 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 213 transitions. [2019-10-15 03:24:18,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:24:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 213 transitions. [2019-10-15 03:24:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:24:18,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:18,149 INFO L380 BasicCegarLoop]: trace histogram [6, 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] [2019-10-15 03:24:18,150 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:18,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2063576827, now seen corresponding path program 1 times [2019-10-15 03:24:18,150 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:18,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852266578] [2019-10-15 03:24:18,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:18,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:18,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 03:24:18,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852266578] [2019-10-15 03:24:18,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:18,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:24:18,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630033748] [2019-10-15 03:24:18,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:24:18,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:18,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:24:18,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:24:18,413 INFO L87 Difference]: Start difference. First operand 175 states and 213 transitions. Second operand 9 states. [2019-10-15 03:24:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:19,814 INFO L93 Difference]: Finished difference Result 499 states and 622 transitions. [2019-10-15 03:24:19,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:24:19,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2019-10-15 03:24:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:19,820 INFO L225 Difference]: With dead ends: 499 [2019-10-15 03:24:19,820 INFO L226 Difference]: Without dead ends: 363 [2019-10-15 03:24:19,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:24:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2019-10-15 03:24:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 351. [2019-10-15 03:24:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-10-15 03:24:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 437 transitions. [2019-10-15 03:24:19,882 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 437 transitions. Word has length 81 [2019-10-15 03:24:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:19,883 INFO L462 AbstractCegarLoop]: Abstraction has 351 states and 437 transitions. [2019-10-15 03:24:19,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:24:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 437 transitions. [2019-10-15 03:24:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-15 03:24:19,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:19,888 INFO L380 BasicCegarLoop]: trace histogram [6, 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] [2019-10-15 03:24:19,888 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1406139330, now seen corresponding path program 1 times [2019-10-15 03:24:19,889 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:19,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429474972] [2019-10-15 03:24:19,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:19,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:19,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 03:24:20,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429474972] [2019-10-15 03:24:20,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:20,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:24:20,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724500037] [2019-10-15 03:24:20,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:24:20,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:20,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:24:20,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:24:20,100 INFO L87 Difference]: Start difference. First operand 351 states and 437 transitions. Second operand 7 states. [2019-10-15 03:24:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:21,104 INFO L93 Difference]: Finished difference Result 928 states and 1262 transitions. [2019-10-15 03:24:21,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:24:21,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2019-10-15 03:24:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:21,112 INFO L225 Difference]: With dead ends: 928 [2019-10-15 03:24:21,112 INFO L226 Difference]: Without dead ends: 616 [2019-10-15 03:24:21,115 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 03:24:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-15 03:24:21,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 559. [2019-10-15 03:24:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2019-10-15 03:24:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 709 transitions. [2019-10-15 03:24:21,214 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 709 transitions. Word has length 86 [2019-10-15 03:24:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:21,215 INFO L462 AbstractCegarLoop]: Abstraction has 559 states and 709 transitions. [2019-10-15 03:24:21,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:24:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 709 transitions. [2019-10-15 03:24:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 03:24:21,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:21,220 INFO L380 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:24:21,220 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:21,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1497411186, now seen corresponding path program 1 times [2019-10-15 03:24:21,221 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:21,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206031228] [2019-10-15 03:24:21,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:21,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:21,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 03:24:21,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206031228] [2019-10-15 03:24:21,580 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:21,580 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-15 03:24:21,580 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871430977] [2019-10-15 03:24:21,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:24:21,581 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:21,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:24:21,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:24:21,582 INFO L87 Difference]: Start difference. First operand 559 states and 709 transitions. Second operand 14 states. [2019-10-15 03:24:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:23,371 INFO L93 Difference]: Finished difference Result 1584 states and 2094 transitions. [2019-10-15 03:24:23,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 03:24:23,371 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 114 [2019-10-15 03:24:23,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:23,382 INFO L225 Difference]: With dead ends: 1584 [2019-10-15 03:24:23,382 INFO L226 Difference]: Without dead ends: 1064 [2019-10-15 03:24:23,387 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2019-10-15 03:24:23,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2019-10-15 03:24:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1042. [2019-10-15 03:24:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2019-10-15 03:24:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1358 transitions. [2019-10-15 03:24:23,495 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1358 transitions. Word has length 114 [2019-10-15 03:24:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:23,495 INFO L462 AbstractCegarLoop]: Abstraction has 1042 states and 1358 transitions. [2019-10-15 03:24:23,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:24:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1358 transitions. [2019-10-15 03:24:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:24:23,500 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:23,500 INFO L380 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:24:23,501 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:23,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:23,501 INFO L82 PathProgramCache]: Analyzing trace with hash 600472367, now seen corresponding path program 1 times [2019-10-15 03:24:23,501 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:23,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483638308] [2019-10-15 03:24:23,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:23,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:23,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 03:24:23,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483638308] [2019-10-15 03:24:23,690 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:23,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:24:23,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714446035] [2019-10-15 03:24:23,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:24:23,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:23,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:24:23,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:24:23,693 INFO L87 Difference]: Start difference. First operand 1042 states and 1358 transitions. Second operand 9 states. [2019-10-15 03:24:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:25,206 INFO L93 Difference]: Finished difference Result 3312 states and 4435 transitions. [2019-10-15 03:24:25,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:24:25,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2019-10-15 03:24:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:25,237 INFO L225 Difference]: With dead ends: 3312 [2019-10-15 03:24:25,238 INFO L226 Difference]: Without dead ends: 2517 [2019-10-15 03:24:25,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:24:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2019-10-15 03:24:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2187. [2019-10-15 03:24:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2019-10-15 03:24:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2862 transitions. [2019-10-15 03:24:25,595 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2862 transitions. Word has length 117 [2019-10-15 03:24:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:25,596 INFO L462 AbstractCegarLoop]: Abstraction has 2187 states and 2862 transitions. [2019-10-15 03:24:25,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:24:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2862 transitions. [2019-10-15 03:24:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-15 03:24:25,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:25,602 INFO L380 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:24:25,603 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1485618468, now seen corresponding path program 1 times [2019-10-15 03:24:25,604 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:25,604 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919987889] [2019-10-15 03:24:25,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:25,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:25,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:24:25,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919987889] [2019-10-15 03:24:25,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504226111] [2019-10-15 03:24:25,733 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 03:24:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:26,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:24:26,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:24:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 03:24:26,076 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:24:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:24:26,535 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:24:26,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-15 03:24:26,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185590943] [2019-10-15 03:24:26,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:24:26,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:26,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:24:26,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:24:26,540 INFO L87 Difference]: Start difference. First operand 2187 states and 2862 transitions. Second operand 3 states. [2019-10-15 03:24:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:26,720 INFO L93 Difference]: Finished difference Result 4657 states and 6283 transitions. [2019-10-15 03:24:26,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:24:26,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-10-15 03:24:26,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:26,740 INFO L225 Difference]: With dead ends: 4657 [2019-10-15 03:24:26,741 INFO L226 Difference]: Without dead ends: 2509 [2019-10-15 03:24:26,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:24:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2019-10-15 03:24:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2509. [2019-10-15 03:24:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2509 states. [2019-10-15 03:24:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3269 transitions. [2019-10-15 03:24:26,978 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3269 transitions. Word has length 163 [2019-10-15 03:24:26,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:26,980 INFO L462 AbstractCegarLoop]: Abstraction has 2509 states and 3269 transitions. [2019-10-15 03:24:26,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:24:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3269 transitions. [2019-10-15 03:24:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 03:24:26,987 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:26,987 INFO L380 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:24:27,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:24:27,202 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:27,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1870702604, now seen corresponding path program 1 times [2019-10-15 03:24:27,203 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:27,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246996875] [2019-10-15 03:24:27,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:27,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:27,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 03:24:27,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246996875] [2019-10-15 03:24:27,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816473182] [2019-10-15 03:24:27,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:24:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:27,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:24:27,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:24:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 03:24:27,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:24:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 03:24:28,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2129406523] [2019-10-15 03:24:28,326 INFO L162 IcfgInterpreter]: Started Sifa with 116 locations of interest [2019-10-15 03:24:28,327 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:24:28,335 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:24:28,351 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:24:28,352 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:24:39,238 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 482 [2019-10-15 03:24:41,037 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:24:41,182 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-10-15 03:24:41,358 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-10-15 03:24:41,490 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-10-15 03:24:41,728 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:41,954 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:42,185 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:42,482 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:42,862 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 576 [2019-10-15 03:24:43,053 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:43,237 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:43,394 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:43,517 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:43,670 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-15 03:24:43,681 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 211 for LOIs [2019-10-15 03:24:43,975 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 582 for LOIs [2019-10-15 03:24:44,098 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-15 03:24:44,214 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-15 03:24:44,404 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:44,553 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-15 03:24:44,668 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-15 03:24:44,875 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:45,019 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:45,146 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:45,359 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:45,619 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 630 DAG size of output: 584 [2019-10-15 03:24:45,733 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:45,924 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:46,087 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:46,208 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:46,382 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:46,497 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:46,610 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:46,777 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:46,932 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:47,047 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:47,226 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:47,340 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:47,455 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:47,625 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:47,739 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:47,875 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:48,042 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:48,155 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:48,270 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:48,437 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:48,550 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:48,681 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:48,875 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:48,987 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:49,100 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:49,268 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:49,381 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:49,493 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-15 03:24:49,682 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-15 03:24:49,946 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:24:50,089 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:24:50,257 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:24:50,529 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 632 DAG size of output: 630 [2019-10-15 03:24:50,673 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:24:50,897 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:24:51,153 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 632 DAG size of output: 630 [2019-10-15 03:24:51,301 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:24:51,461 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 630 [2019-10-15 03:24:51,637 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-10-15 03:24:51,782 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-10-15 03:24:51,968 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 634 [2019-10-15 03:24:52,242 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 636 DAG size of output: 632 [2019-10-15 03:24:52,397 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 632 [2019-10-15 03:24:52,566 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 634