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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:19:33,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:19:33,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:19:33,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:19:33,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:19:33,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:19:33,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:19:33,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:19:33,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:19:33,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:19:33,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:19:33,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:19:33,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:19:33,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:19:33,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:19:33,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:19:33,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:19:33,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:19:33,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:19:33,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:19:33,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:19:33,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:19:33,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:19:33,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:19:33,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:19:33,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:19:33,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:19:33,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:19:33,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:19:33,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:19:33,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:19:33,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:19:33,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:19:33,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:19:33,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:19:33,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:19:33,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:19:33,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:19:33,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:19:33,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:19:33,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:19:33,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:19:33,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:19:33,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:19:33,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:19:33,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:19:33,390 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:19:33,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:19:33,390 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:19:33,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:19:33,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:19:33,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:19:33,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:19:33,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:19:33,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:19:33,393 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:19:33,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:19:33,394 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:19:33,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:19:33,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:19:33,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:19:33,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:19:33,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:19:33,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:19:33,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:19:33,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:19:33,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:19:33,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:19:33,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:19:33,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:19:33,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:19:33,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:19:33,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:19:33,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:19:33,729 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:19:33,729 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:19:33,730 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2019-10-13 23:19:33,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a24ccb14/3804c0231e0c4a5a8ad31783ddcf11d7/FLAG4c520bbf1 [2019-10-13 23:19:34,332 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:19:34,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2019-10-13 23:19:34,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a24ccb14/3804c0231e0c4a5a8ad31783ddcf11d7/FLAG4c520bbf1 [2019-10-13 23:19:34,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a24ccb14/3804c0231e0c4a5a8ad31783ddcf11d7 [2019-10-13 23:19:34,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:19:34,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:19:34,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:19:34,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:19:34,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:19:34,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:19:34" (1/1) ... [2019-10-13 23:19:34,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3471f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:34, skipping insertion in model container [2019-10-13 23:19:34,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:19:34" (1/1) ... [2019-10-13 23:19:34,685 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:19:34,731 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:19:35,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:19:35,265 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:19:35,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:19:35,436 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:19:35,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35 WrapperNode [2019-10-13 23:19:35,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:19:35,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:19:35,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:19:35,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:19:35,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (1/1) ... [2019-10-13 23:19:35,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (1/1) ... [2019-10-13 23:19:35,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (1/1) ... [2019-10-13 23:19:35,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (1/1) ... [2019-10-13 23:19:35,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (1/1) ... [2019-10-13 23:19:35,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (1/1) ... [2019-10-13 23:19:35,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (1/1) ... [2019-10-13 23:19:35,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:19:35,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:19:35,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:19:35,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:19:35,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:19:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:19:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:19:35,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:19:35,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:19:35,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:19:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:19:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:19:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:19:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:19:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:19:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 23:19:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:19:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:19:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:19:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:19:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:19:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:19:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:19:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:19:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:19:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:19:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:19:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:19:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:19:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:19:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:19:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:19:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:19:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:19:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:19:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:19:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:19:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:19:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:19:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:19:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:19:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:19:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:19:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:19:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:19:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:19:35,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:19:35,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:19:35,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:19:35,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:19:35,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:19:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:19:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:19:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:19:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:19:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:19:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:19:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:19:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:19:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:19:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:19:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:19:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:19:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:19:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:19:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:19:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:19:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:19:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:19:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:19:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:19:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:19:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:19:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:19:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:19:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:19:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:19:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:19:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:19:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:19:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 23:19:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:19:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:19:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:19:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:19:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:19:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:19:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:19:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:19:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:19:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:19:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:19:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:19:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:19:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:19:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:19:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:19:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:19:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:19:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:19:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:19:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:19:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:19:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:19:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:19:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:19:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:19:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:19:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:19:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:19:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:19:37,462 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:19:37,462 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:19:37,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:19:37 BoogieIcfgContainer [2019-10-13 23:19:37,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:19:37,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:19:37,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:19:37,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:19:37,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:19:34" (1/3) ... [2019-10-13 23:19:37,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf4b391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:19:37, skipping insertion in model container [2019-10-13 23:19:37,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:35" (2/3) ... [2019-10-13 23:19:37,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf4b391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:19:37, skipping insertion in model container [2019-10-13 23:19:37,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:19:37" (3/3) ... [2019-10-13 23:19:37,473 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2019-10-13 23:19:37,483 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:19:37,493 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:19:37,504 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:19:37,547 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:19:37,548 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:19:37,549 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:19:37,549 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:19:37,550 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:19:37,550 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:19:37,550 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:19:37,550 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:19:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2019-10-13 23:19:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:19:37,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:37,596 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:37,603 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:37,608 INFO L82 PathProgramCache]: Analyzing trace with hash 17459039, now seen corresponding path program 1 times [2019-10-13 23:19:37,618 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:37,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012970749] [2019-10-13 23:19:37,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:37,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:37,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:38,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012970749] [2019-10-13 23:19:38,004 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:38,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:19:38,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201966764] [2019-10-13 23:19:38,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:19:38,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:19:38,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:19:38,029 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 2 states. [2019-10-13 23:19:38,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:38,102 INFO L93 Difference]: Finished difference Result 290 states and 355 transitions. [2019-10-13 23:19:38,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:19:38,104 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:19:38,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:38,123 INFO L225 Difference]: With dead ends: 290 [2019-10-13 23:19:38,123 INFO L226 Difference]: Without dead ends: 147 [2019-10-13 23:19:38,131 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:19:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-10-13 23:19:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-10-13 23:19:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-10-13 23:19:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2019-10-13 23:19:38,191 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 52 [2019-10-13 23:19:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:38,192 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2019-10-13 23:19:38,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:19:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2019-10-13 23:19:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:19:38,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:38,197 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:38,197 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:38,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:38,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1035601648, now seen corresponding path program 1 times [2019-10-13 23:19:38,198 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:38,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179230270] [2019-10-13 23:19:38,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:38,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:38,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:38,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179230270] [2019-10-13 23:19:38,338 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:38,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:19:38,338 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455146164] [2019-10-13 23:19:38,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:19:38,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:38,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:19:38,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:19:38,341 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand 3 states. [2019-10-13 23:19:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:38,365 INFO L93 Difference]: Finished difference Result 238 states and 280 transitions. [2019-10-13 23:19:38,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:19:38,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:19:38,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:38,369 INFO L225 Difference]: With dead ends: 238 [2019-10-13 23:19:38,369 INFO L226 Difference]: Without dead ends: 139 [2019-10-13 23:19:38,371 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:19:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-13 23:19:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-10-13 23:19:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-13 23:19:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2019-10-13 23:19:38,389 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 53 [2019-10-13 23:19:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:38,390 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2019-10-13 23:19:38,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:19:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2019-10-13 23:19:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 23:19:38,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:38,396 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:38,397 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:38,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:38,398 INFO L82 PathProgramCache]: Analyzing trace with hash -976628071, now seen corresponding path program 1 times [2019-10-13 23:19:38,398 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:38,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017400209] [2019-10-13 23:19:38,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:38,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:38,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:38,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017400209] [2019-10-13 23:19:38,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:38,632 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:19:38,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097747441] [2019-10-13 23:19:38,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:19:38,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:38,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:19:38,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:19:38,633 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 7 states. [2019-10-13 23:19:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:39,201 INFO L93 Difference]: Finished difference Result 417 states and 503 transitions. [2019-10-13 23:19:39,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:19:39,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-13 23:19:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:39,205 INFO L225 Difference]: With dead ends: 417 [2019-10-13 23:19:39,205 INFO L226 Difference]: Without dead ends: 303 [2019-10-13 23:19:39,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:19:39,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2019-10-13 23:19:39,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2019-10-13 23:19:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-10-13 23:19:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2019-10-13 23:19:39,286 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 57 [2019-10-13 23:19:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:39,287 INFO L462 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2019-10-13 23:19:39,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:19:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2019-10-13 23:19:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 23:19:39,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:39,290 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:39,291 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:39,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2135084772, now seen corresponding path program 1 times [2019-10-13 23:19:39,291 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:39,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464992064] [2019-10-13 23:19:39,292 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:39,292 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:39,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:19:39,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464992064] [2019-10-13 23:19:39,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:39,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:19:39,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272488315] [2019-10-13 23:19:39,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:19:39,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:19:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:19:39,461 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand 7 states. [2019-10-13 23:19:40,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:40,391 INFO L93 Difference]: Finished difference Result 758 states and 979 transitions. [2019-10-13 23:19:40,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:19:40,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-13 23:19:40,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:40,396 INFO L225 Difference]: With dead ends: 758 [2019-10-13 23:19:40,396 INFO L226 Difference]: Without dead ends: 492 [2019-10-13 23:19:40,398 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:19:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-13 23:19:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 441. [2019-10-13 23:19:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-10-13 23:19:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 522 transitions. [2019-10-13 23:19:40,444 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 522 transitions. Word has length 61 [2019-10-13 23:19:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:40,446 INFO L462 AbstractCegarLoop]: Abstraction has 441 states and 522 transitions. [2019-10-13 23:19:40,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:19:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 522 transitions. [2019-10-13 23:19:40,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 23:19:40,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:40,453 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, 1, 1, 1] [2019-10-13 23:19:40,453 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:40,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:40,454 INFO L82 PathProgramCache]: Analyzing trace with hash -91380313, now seen corresponding path program 1 times [2019-10-13 23:19:40,454 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:40,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124059749] [2019-10-13 23:19:40,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:40,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:40,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:40,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124059749] [2019-10-13 23:19:40,790 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:40,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:19:40,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721529679] [2019-10-13 23:19:40,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:19:40,792 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:40,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:19:40,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:19:40,792 INFO L87 Difference]: Start difference. First operand 441 states and 522 transitions. Second operand 12 states. [2019-10-13 23:19:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:41,977 INFO L93 Difference]: Finished difference Result 1286 states and 1573 transitions. [2019-10-13 23:19:41,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:19:41,978 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2019-10-13 23:19:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:41,987 INFO L225 Difference]: With dead ends: 1286 [2019-10-13 23:19:41,987 INFO L226 Difference]: Without dead ends: 870 [2019-10-13 23:19:41,990 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:19:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-13 23:19:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 848. [2019-10-13 23:19:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2019-10-13 23:19:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1025 transitions. [2019-10-13 23:19:42,075 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1025 transitions. Word has length 97 [2019-10-13 23:19:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:42,076 INFO L462 AbstractCegarLoop]: Abstraction has 848 states and 1025 transitions. [2019-10-13 23:19:42,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:19:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1025 transitions. [2019-10-13 23:19:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 23:19:42,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:42,084 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, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:42,084 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1350927770, now seen corresponding path program 1 times [2019-10-13 23:19:42,085 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:42,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810778815] [2019-10-13 23:19:42,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:42,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:42,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:19:42,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810778815] [2019-10-13 23:19:42,331 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:42,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:19:42,332 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879682254] [2019-10-13 23:19:42,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:19:42,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:42,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:19:42,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:19:42,333 INFO L87 Difference]: Start difference. First operand 848 states and 1025 transitions. Second operand 9 states. [2019-10-13 23:19:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:43,520 INFO L93 Difference]: Finished difference Result 2724 states and 3404 transitions. [2019-10-13 23:19:43,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:19:43,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2019-10-13 23:19:43,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:43,538 INFO L225 Difference]: With dead ends: 2724 [2019-10-13 23:19:43,538 INFO L226 Difference]: Without dead ends: 2073 [2019-10-13 23:19:43,542 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 [2019-10-13 23:19:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2019-10-13 23:19:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1783. [2019-10-13 23:19:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2019-10-13 23:19:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2173 transitions. [2019-10-13 23:19:43,700 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2173 transitions. Word has length 100 [2019-10-13 23:19:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:43,701 INFO L462 AbstractCegarLoop]: Abstraction has 1783 states and 2173 transitions. [2019-10-13 23:19:43,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:19:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2173 transitions. [2019-10-13 23:19:43,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 23:19:43,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:43,706 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2019-10-13 23:19:43,707 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:43,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:43,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2036118335, now seen corresponding path program 1 times [2019-10-13 23:19:43,707 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:43,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269221827] [2019-10-13 23:19:43,708 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:43,708 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:43,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 23:19:43,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269221827] [2019-10-13 23:19:43,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638987706] [2019-10-13 23:19:43,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:19:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:44,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:19:44,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:19:44,360 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 23:19:45,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [401399138] [2019-10-13 23:19:45,075 INFO L162 IcfgInterpreter]: Started Sifa with 123 locations of interest [2019-10-13 23:19:45,075 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:45,083 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:45,092 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:45,093 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:55,336 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:56,950 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:57,087 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:57,286 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:57,495 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:57,927 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:58,285 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:58,518 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:58,757 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:59,134 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:19:59,287 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:59,434 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:59,612 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:59,719 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:59,848 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:59,857 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:20:00,077 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:20:00,240 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:00,363 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:00,493 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:00,730 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:00,866 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:01,001 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:01,236 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:01,505 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-13 23:20:01,744 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:02,102 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:02,420 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:02,523 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:02,632 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:02,785 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:03,098 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:03,430 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:03,743 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:04,054 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:04,168 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:04,284 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:04,404 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:04,606 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:20:04,725 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:04,859 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:04,975 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:05,112 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:05,260 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:05,371 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:05,500 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:05,610 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:05,721 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:05,840 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:05,997 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:06,122 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:06,248 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:06,454 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:20:06,565 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:20:06,690 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:06,901 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:20:07,012 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:20:07,209 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:07,331 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:20:07,445 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:20:07,578 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:20:07,692 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:07,807 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:07,945 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:08,094 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:08,210 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:08,485 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:08,920 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-13 23:20:09,038 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:09,165 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:09,280 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:09,398 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:09,523 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:09,656 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:09,767 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:09,923 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:10,037 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:10,158 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:10,279 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:10,390 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:10,517 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:10,638 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:10,780 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:10,893 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:11,019 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:11,253 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:20:11,365 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:11,497 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:11,704 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:20:11,818 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:11,939 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:20:12,148 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 573 [2019-10-13 23:20:12,262 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:20:12,388 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:20:12,604 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-13 23:20:12,723 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:12,859 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:20:12,988 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:13,098 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:13,221 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:13,342 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:20:13,452 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564