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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:23:28,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:23:28,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:23:28,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:23:28,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:23:28,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:23:28,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:23:28,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:23:28,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:23:28,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:23:28,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:23:28,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:23:28,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:23:28,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:23:28,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:23:28,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:23:28,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:23:28,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:23:28,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:23:28,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:23:28,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:23:28,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:23:28,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:23:28,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:23:28,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:23:28,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:23:28,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:23:28,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:23:28,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:23:28,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:23:28,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:23:28,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:23:28,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:23:28,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:23:28,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:23:28,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:23:28,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:23:28,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:23:28,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:23:28,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:23:28,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:23:28,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:23:28,286 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:23:28,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:23:28,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:23:28,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:23:28,289 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:23:28,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:23:28,290 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:23:28,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:23:28,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:23:28,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:23:28,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:23:28,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:23:28,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:23:28,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:23:28,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:23:28,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:23:28,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:23:28,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:23:28,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:23:28,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:23:28,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:23:28,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:28,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:23:28,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:23:28,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:23:28,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:23:28,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:23:28,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:23:28,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:23:28,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:23:28,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:23:28,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:23:28,627 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:23:28,628 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:23:28,628 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-10-15 03:23:28,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26b120b7a/f9845560c3cc4776b5a55bfb59980fff/FLAGf8ba7e6a2 [2019-10-15 03:23:29,186 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:23:29,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-10-15 03:23:29,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26b120b7a/f9845560c3cc4776b5a55bfb59980fff/FLAGf8ba7e6a2 [2019-10-15 03:23:29,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26b120b7a/f9845560c3cc4776b5a55bfb59980fff [2019-10-15 03:23:29,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:23:29,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:23:29,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:29,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:23:29,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:23:29,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:29" (1/1) ... [2019-10-15 03:23:29,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fde0831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:29, skipping insertion in model container [2019-10-15 03:23:29,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:29" (1/1) ... [2019-10-15 03:23:29,479 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:23:29,533 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:23:30,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:30,056 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:23:30,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:30,185 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:23:30,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30 WrapperNode [2019-10-15 03:23:30,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:30,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:23:30,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:23:30,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:23:30,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:23:30,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:23:30,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:23:30,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:23:30,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:23:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:23:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:23:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:23:30,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:23:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:23:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:23:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-15 03:23:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:23:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:23:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:23:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:23:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:23:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:23:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:23:30,389 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:23:30,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:23:30,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:30,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:30,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:30,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:23:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:23:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:23:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:23:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:23:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:23:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:23:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:23:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:23:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:23:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:23:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:23:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:23:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:23:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:23:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:23:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:23:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:23:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:23:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:23:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:23:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:23:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:23:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:23:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:23:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:23:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:23:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:23:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:23:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:23:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:23:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:23:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:23:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-15 03:23:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:23:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:23:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:23:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:23:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:23:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:23:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:23:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:30,398 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:23:30,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:23:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:23:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:23:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:23:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:23:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:23:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:23:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:23:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:23:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:23:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:23:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:23:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:23:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:23:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:23:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:23:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:23:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:23:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:23:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:23:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:23:31,894 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:23:31,894 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:23:31,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:31 BoogieIcfgContainer [2019-10-15 03:23:31,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:23:31,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:23:31,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:23:31,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:23:31,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:29" (1/3) ... [2019-10-15 03:23:31,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beb6a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:31, skipping insertion in model container [2019-10-15 03:23:31,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (2/3) ... [2019-10-15 03:23:31,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beb6a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:31, skipping insertion in model container [2019-10-15 03:23:31,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:31" (3/3) ... [2019-10-15 03:23:31,904 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2019-10-15 03:23:31,915 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:23:31,924 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:23:31,939 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:23:31,969 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:23:31,969 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:23:31,969 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:23:31,970 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:23:31,970 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:23:31,970 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:23:31,970 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:23:31,971 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:23:31,995 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2019-10-15 03:23:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:23:32,005 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:32,006 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:32,008 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:32,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:32,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1483690071, now seen corresponding path program 1 times [2019-10-15 03:23:32,024 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:32,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007557116] [2019-10-15 03:23:32,025 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,025 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:32,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007557116] [2019-10-15 03:23:32,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:32,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:23:32,371 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709890315] [2019-10-15 03:23:32,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:23:32,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:32,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:23:32,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:32,393 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 2 states. [2019-10-15 03:23:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:32,436 INFO L93 Difference]: Finished difference Result 252 states and 309 transitions. [2019-10-15 03:23:32,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:23:32,438 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:23:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:32,451 INFO L225 Difference]: With dead ends: 252 [2019-10-15 03:23:32,451 INFO L226 Difference]: Without dead ends: 128 [2019-10-15 03:23:32,456 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-15 03:23:32,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-10-15 03:23:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-15 03:23:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2019-10-15 03:23:32,521 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 52 [2019-10-15 03:23:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:32,522 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2019-10-15 03:23:32,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:23:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2019-10-15 03:23:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:23:32,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:32,527 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:32,527 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:32,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:32,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1514681282, now seen corresponding path program 1 times [2019-10-15 03:23:32,528 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:32,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082688788] [2019-10-15 03:23:32,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:32,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082688788] [2019-10-15 03:23:32,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:32,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:23:32,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749296726] [2019-10-15 03:23:32,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:23:32,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:32,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:23:32,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:32,663 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 3 states. [2019-10-15 03:23:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:32,686 INFO L93 Difference]: Finished difference Result 203 states and 237 transitions. [2019-10-15 03:23:32,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:23:32,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:23:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:32,689 INFO L225 Difference]: With dead ends: 203 [2019-10-15 03:23:32,689 INFO L226 Difference]: Without dead ends: 120 [2019-10-15 03:23:32,691 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:32,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-15 03:23:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-15 03:23:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-15 03:23:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2019-10-15 03:23:32,710 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 53 [2019-10-15 03:23:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:32,710 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2019-10-15 03:23:32,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:23:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2019-10-15 03:23:32,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 03:23:32,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:32,713 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:32,713 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:32,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:32,714 INFO L82 PathProgramCache]: Analyzing trace with hash 925546405, now seen corresponding path program 1 times [2019-10-15 03:23:32,714 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:32,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774242710] [2019-10-15 03:23:32,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:32,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774242710] [2019-10-15 03:23:32,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:32,886 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:32,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967058280] [2019-10-15 03:23:32,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:32,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:32,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:32,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:32,888 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 7 states. [2019-10-15 03:23:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:33,330 INFO L93 Difference]: Finished difference Result 359 states and 431 transitions. [2019-10-15 03:23:33,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:23:33,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-15 03:23:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:33,339 INFO L225 Difference]: With dead ends: 359 [2019-10-15 03:23:33,339 INFO L226 Difference]: Without dead ends: 264 [2019-10-15 03:23:33,341 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:23:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-10-15 03:23:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2019-10-15 03:23:33,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2019-10-15 03:23:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 307 transitions. [2019-10-15 03:23:33,417 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 307 transitions. Word has length 56 [2019-10-15 03:23:33,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:33,418 INFO L462 AbstractCegarLoop]: Abstraction has 256 states and 307 transitions. [2019-10-15 03:23:33,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 307 transitions. [2019-10-15 03:23:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:23:33,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:33,430 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:33,430 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:33,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1299137629, now seen corresponding path program 1 times [2019-10-15 03:23:33,431 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:33,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52377562] [2019-10-15 03:23:33,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:23:33,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52377562] [2019-10-15 03:23:33,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:33,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:33,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63375552] [2019-10-15 03:23:33,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:33,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:33,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:33,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:33,620 INFO L87 Difference]: Start difference. First operand 256 states and 307 transitions. Second operand 7 states. [2019-10-15 03:23:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:34,331 INFO L93 Difference]: Finished difference Result 668 states and 864 transitions. [2019-10-15 03:23:34,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:23:34,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:23:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:34,337 INFO L225 Difference]: With dead ends: 668 [2019-10-15 03:23:34,337 INFO L226 Difference]: Without dead ends: 437 [2019-10-15 03:23:34,339 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:23:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-10-15 03:23:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 387. [2019-10-15 03:23:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-10-15 03:23:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 458 transitions. [2019-10-15 03:23:34,394 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 458 transitions. Word has length 61 [2019-10-15 03:23:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:34,395 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 458 transitions. [2019-10-15 03:23:34,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:34,395 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 458 transitions. [2019-10-15 03:23:34,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 03:23:34,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:34,398 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:34,398 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:34,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:34,398 INFO L82 PathProgramCache]: Analyzing trace with hash 62856739, now seen corresponding path program 1 times [2019-10-15 03:23:34,398 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:34,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803066138] [2019-10-15 03:23:34,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:34,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:34,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:34,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803066138] [2019-10-15 03:23:34,601 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:34,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:23:34,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441949683] [2019-10-15 03:23:34,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:23:34,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:34,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:23:34,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:23:34,603 INFO L87 Difference]: Start difference. First operand 387 states and 458 transitions. Second operand 12 states. [2019-10-15 03:23:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:35,668 INFO L93 Difference]: Finished difference Result 1149 states and 1406 transitions. [2019-10-15 03:23:35,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:23:35,671 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-15 03:23:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:35,683 INFO L225 Difference]: With dead ends: 1149 [2019-10-15 03:23:35,683 INFO L226 Difference]: Without dead ends: 787 [2019-10-15 03:23:35,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2019-10-15 03:23:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 765. [2019-10-15 03:23:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2019-10-15 03:23:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 926 transitions. [2019-10-15 03:23:35,775 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 926 transitions. Word has length 91 [2019-10-15 03:23:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:35,776 INFO L462 AbstractCegarLoop]: Abstraction has 765 states and 926 transitions. [2019-10-15 03:23:35,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:23:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 926 transitions. [2019-10-15 03:23:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 03:23:35,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:35,779 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:35,780 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:35,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:35,780 INFO L82 PathProgramCache]: Analyzing trace with hash -695176965, now seen corresponding path program 1 times [2019-10-15 03:23:35,780 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:35,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513898311] [2019-10-15 03:23:35,781 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:35,781 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:35,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:35,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513898311] [2019-10-15 03:23:35,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:35,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:23:35,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637003069] [2019-10-15 03:23:35,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:23:35,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:35,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:23:35,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:23:35,939 INFO L87 Difference]: Start difference. First operand 765 states and 926 transitions. Second operand 9 states. [2019-10-15 03:23:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:36,977 INFO L93 Difference]: Finished difference Result 2465 states and 3093 transitions. [2019-10-15 03:23:36,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:23:36,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2019-10-15 03:23:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:36,992 INFO L225 Difference]: With dead ends: 2465 [2019-10-15 03:23:36,992 INFO L226 Difference]: Without dead ends: 1884 [2019-10-15 03:23:36,995 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 03:23:36,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2019-10-15 03:23:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1610. [2019-10-15 03:23:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2019-10-15 03:23:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1968 transitions. [2019-10-15 03:23:37,113 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1968 transitions. Word has length 94 [2019-10-15 03:23:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:37,114 INFO L462 AbstractCegarLoop]: Abstraction has 1610 states and 1968 transitions. [2019-10-15 03:23:37,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:23:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1968 transitions. [2019-10-15 03:23:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:23:37,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:37,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:37,119 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash -372636459, now seen corresponding path program 1 times [2019-10-15 03:23:37,120 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:37,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591277064] [2019-10-15 03:23:37,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:37,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:37,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:23:37,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591277064] [2019-10-15 03:23:37,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756779747] [2019-10-15 03:23:37,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:23:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:37,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:23:37,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:23:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:23:37,707 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:23:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:23:38,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [625786057] [2019-10-15 03:23:38,248 INFO L162 IcfgInterpreter]: Started Sifa with 107 locations of interest [2019-10-15 03:23:38,248 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:23:38,255 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:23:38,263 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:23:38,263 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:23:46,311 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:23:48,044 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:23:48,180 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:48,318 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:48,476 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:48,760 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:48,993 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:49,207 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:49,361 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:49,686 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:23:49,837 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:49,962 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:50,099 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:50,230 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:50,346 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:50,368 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:23:50,679 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:23:50,680 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:23:50,838 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:51,010 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:51,166 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:51,289 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:51,516 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:51,661 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:51,882 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:52,091 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:23:52,224 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:52,376 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:52,689 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:52,809 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:53,073 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:53,179 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:53,283 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:53,400 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:53,530 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:53,751 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:54,060 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:54,271 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:54,390 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:54,695 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,039 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,346 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,473 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,580 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,835 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,117 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:56,225 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,359 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,468 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,579 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,696 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,854 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:56,994 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:57,120 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:57,325 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:23:57,435 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:57,561 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:57,671 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:57,780 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:57,918 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:58,033 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:23:58,147 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:23:58,301 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:23:58,414 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:58,527 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:58,650 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:58,784 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:58,920 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:59,063 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:59,182 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:59,297 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:59,565 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:59,761 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:59,875 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:23:59,999 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:00,223 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:00,350 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,479 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,694 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:00,804 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,925 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,044 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,158 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,294 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,522 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:01,634 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:01,760 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:01,970 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:02,085 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,225 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,428 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:02,540 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,663 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,778 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:02,892 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:03,018 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:03,133 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:03,248 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:03,397 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:03,614 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:03,723 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:03,843 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,041 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:04,150 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,274 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,383 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,496 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,615 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,824 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:04,933 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,053 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,250 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:05,359 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,480 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,601 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,711 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,829 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,040 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:06,161 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:06,289 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,682 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:06,791 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:06,916 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,025 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:07,135 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:07,257 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,454 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 566 [2019-10-15 03:24:07,567 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:07,690 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,891 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 568 [2019-10-15 03:24:08,014 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,145 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:08,346 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 568 [2019-10-15 03:24:08,456 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,581 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:08,947 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:09,059 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:09,196 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:09,406 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:09,515 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,639 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,860 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:09,969 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,092 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564