/usr/bin/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_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:35:06,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:35:06,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:35:06,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:35:06,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:35:06,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:35:06,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:35:06,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:35:06,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:35:06,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:35:06,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:35:06,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:35:06,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:35:06,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:35:06,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:35:06,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:35:06,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:35:06,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:35:06,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:35:06,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:35:06,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:35:06,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:35:06,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:35:06,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:35:06,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:35:06,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:35:06,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:35:06,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:35:06,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:35:06,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:35:06,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:35:06,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:35:06,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:35:06,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:35:06,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:35:06,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:35:06,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:35:06,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:35:06,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:35:06,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:35:06,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:35:06,403 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 [2019-11-07 04:35:06,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:35:06,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:35:06,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:35:06,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:35:06,446 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:35:06,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:35:06,446 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:35:06,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:35:06,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:35:06,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:35:06,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:35:06,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:35:06,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:35:06,447 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:35:06,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:35:06,448 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:35:06,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:35:06,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:35:06,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:35:06,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:35:06,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:35:06,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:35:06,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:35:06,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:35:06,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:35:06,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:35:06,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:35:06,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:35:06,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:35:06,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:35:06,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:35:06,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:35:06,792 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:35:06,792 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:35:06,793 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2019-11-07 04:35:06,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eabdae57d/12ac0fd304ae45cc87aa3b8024a1cb66/FLAG4c2dfd871 [2019-11-07 04:35:07,420 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:35:07,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2019-11-07 04:35:07,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eabdae57d/12ac0fd304ae45cc87aa3b8024a1cb66/FLAG4c2dfd871 [2019-11-07 04:35:07,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eabdae57d/12ac0fd304ae45cc87aa3b8024a1cb66 [2019-11-07 04:35:07,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:35:07,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:35:07,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:35:07,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:35:07,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:35:07,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:35:07" (1/1) ... [2019-11-07 04:35:07,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e2f384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:07, skipping insertion in model container [2019-11-07 04:35:07,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:35:07" (1/1) ... [2019-11-07 04:35:07,673 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:35:07,717 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:35:08,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:35:08,110 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:35:08,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:35:08,273 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:35:08,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08 WrapperNode [2019-11-07 04:35:08,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:35:08,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:35:08,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:35:08,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:35:08,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (1/1) ... [2019-11-07 04:35:08,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (1/1) ... [2019-11-07 04:35:08,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (1/1) ... [2019-11-07 04:35:08,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (1/1) ... [2019-11-07 04:35:08,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (1/1) ... [2019-11-07 04:35:08,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (1/1) ... [2019-11-07 04:35:08,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (1/1) ... [2019-11-07 04:35:08,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:35:08,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:35:08,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:35:08,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:35:08,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (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 [2019-11-07 04:35:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:35:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:35:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:35:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:35:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:35:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:35:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:35:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:35:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:35:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:35:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:35:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:35:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:35:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:35:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:35:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:35:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:35:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:35:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:35:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:35:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:35:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:35:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:35:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:35:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:35:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:35:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:35:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:35:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:35:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:35:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:35:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:35:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:35:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:35:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:35:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:35:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:35:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:35:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:35:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:35:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:35:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:35:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:35:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:35:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:35:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:35:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:35:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:35:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:35:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:35:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:35:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:35:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:35:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:35:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:35:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:35:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:35:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:35:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:35:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:35:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:35:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:35:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:35:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:35:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:35:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:35:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:35:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:35:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:35:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:35:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:35:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:35:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:35:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:35:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:35:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:35:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:35:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:35:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:35:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:35:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:35:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:35:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:35:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:35:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:35:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:35:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:35:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:35:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:35:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:35:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:35:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:35:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:35:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:35:10,513 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:35:10,513 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:35:10,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:35:10 BoogieIcfgContainer [2019-11-07 04:35:10,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:35:10,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:35:10,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:35:10,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:35:10,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:35:07" (1/3) ... [2019-11-07 04:35:10,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799b3e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:35:10, skipping insertion in model container [2019-11-07 04:35:10,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:08" (2/3) ... [2019-11-07 04:35:10,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799b3e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:35:10, skipping insertion in model container [2019-11-07 04:35:10,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:35:10" (3/3) ... [2019-11-07 04:35:10,525 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product34.cil.c [2019-11-07 04:35:10,536 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:35:10,548 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:35:10,561 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:35:10,606 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:35:10,606 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:35:10,606 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:35:10,606 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:35:10,607 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:35:10,607 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:35:10,607 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:35:10,607 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:35:10,637 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2019-11-07 04:35:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-07 04:35:10,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:10,654 INFO L410 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] [2019-11-07 04:35:10,658 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:10,667 INFO L82 PathProgramCache]: Analyzing trace with hash -555411208, now seen corresponding path program 1 times [2019-11-07 04:35:10,678 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:10,678 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039767843] [2019-11-07 04:35:10,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:11,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039767843] [2019-11-07 04:35:11,108 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:11,108 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:35:11,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487622407] [2019-11-07 04:35:11,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:35:11,120 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:11,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:35:11,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:35:11,137 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 2 states. [2019-11-07 04:35:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:11,180 INFO L93 Difference]: Finished difference Result 196 states and 237 transitions. [2019-11-07 04:35:11,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:35:11,182 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-11-07 04:35:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:11,198 INFO L225 Difference]: With dead ends: 196 [2019-11-07 04:35:11,198 INFO L226 Difference]: Without dead ends: 100 [2019-11-07 04:35:11,203 INFO L630 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 [2019-11-07 04:35:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-07 04:35:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2019-11-07 04:35:11,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-07 04:35:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2019-11-07 04:35:11,267 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2019-11-07 04:35:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:11,268 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2019-11-07 04:35:11,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:35:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2019-11-07 04:35:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-07 04:35:11,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:11,273 INFO L410 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] [2019-11-07 04:35:11,273 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:11,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:11,274 INFO L82 PathProgramCache]: Analyzing trace with hash -514926620, now seen corresponding path program 1 times [2019-11-07 04:35:11,275 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:11,275 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202284159] [2019-11-07 04:35:11,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:11,467 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202284159] [2019-11-07 04:35:11,467 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:11,467 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:35:11,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295107212] [2019-11-07 04:35:11,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:35:11,496 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:11,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:35:11,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:35:11,497 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 3 states. [2019-11-07 04:35:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:11,542 INFO L93 Difference]: Finished difference Result 150 states and 171 transitions. [2019-11-07 04:35:11,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:35:11,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-11-07 04:35:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:11,547 INFO L225 Difference]: With dead ends: 150 [2019-11-07 04:35:11,549 INFO L226 Difference]: Without dead ends: 92 [2019-11-07 04:35:11,551 INFO L630 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 [2019-11-07 04:35:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-07 04:35:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-11-07 04:35:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-07 04:35:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2019-11-07 04:35:11,578 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 53 [2019-11-07 04:35:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:11,585 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2019-11-07 04:35:11,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:35:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2019-11-07 04:35:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 04:35:11,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:11,592 INFO L410 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] [2019-11-07 04:35:11,593 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:11,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:11,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1606923527, now seen corresponding path program 1 times [2019-11-07 04:35:11,593 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:11,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707657569] [2019-11-07 04:35:11,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:11,791 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707657569] [2019-11-07 04:35:11,791 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:11,791 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:35:11,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795420383] [2019-11-07 04:35:11,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:35:11,792 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:11,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:35:11,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:35:11,793 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 7 states. [2019-11-07 04:35:12,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:12,036 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2019-11-07 04:35:12,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:35:12,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-07 04:35:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:12,038 INFO L225 Difference]: With dead ends: 159 [2019-11-07 04:35:12,039 INFO L226 Difference]: Without dead ends: 92 [2019-11-07 04:35:12,040 INFO L630 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 [2019-11-07 04:35:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-07 04:35:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-11-07 04:35:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-07 04:35:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2019-11-07 04:35:12,052 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 56 [2019-11-07 04:35:12,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:12,054 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2019-11-07 04:35:12,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:35:12,054 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2019-11-07 04:35:12,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-07 04:35:12,056 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:12,056 INFO L410 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] [2019-11-07 04:35:12,056 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:12,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:12,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1937846974, now seen corresponding path program 1 times [2019-11-07 04:35:12,057 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:12,057 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624812661] [2019-11-07 04:35:12,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:12,187 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624812661] [2019-11-07 04:35:12,188 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:12,188 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:35:12,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315444713] [2019-11-07 04:35:12,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:35:12,189 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:12,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:35:12,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:35:12,190 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 5 states. [2019-11-07 04:35:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:12,650 INFO L93 Difference]: Finished difference Result 242 states and 286 transitions. [2019-11-07 04:35:12,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:35:12,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-11-07 04:35:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:12,655 INFO L225 Difference]: With dead ends: 242 [2019-11-07 04:35:12,658 INFO L226 Difference]: Without dead ends: 175 [2019-11-07 04:35:12,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:35:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-11-07 04:35:12,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2019-11-07 04:35:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-11-07 04:35:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 178 transitions. [2019-11-07 04:35:12,704 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 178 transitions. Word has length 64 [2019-11-07 04:35:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:12,704 INFO L462 AbstractCegarLoop]: Abstraction has 158 states and 178 transitions. [2019-11-07 04:35:12,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:35:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 178 transitions. [2019-11-07 04:35:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:35:12,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:12,708 INFO L410 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] [2019-11-07 04:35:12,709 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash -947238170, now seen corresponding path program 1 times [2019-11-07 04:35:12,714 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:12,714 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517654983] [2019-11-07 04:35:12,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:12,996 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517654983] [2019-11-07 04:35:12,996 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:12,996 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:35:12,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502879872] [2019-11-07 04:35:12,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:35:12,999 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:12,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:35:13,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:35:13,000 INFO L87 Difference]: Start difference. First operand 158 states and 178 transitions. Second operand 12 states. [2019-11-07 04:35:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:13,796 INFO L93 Difference]: Finished difference Result 435 states and 503 transitions. [2019-11-07 04:35:13,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 04:35:13,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2019-11-07 04:35:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:13,801 INFO L225 Difference]: With dead ends: 435 [2019-11-07 04:35:13,801 INFO L226 Difference]: Without dead ends: 302 [2019-11-07 04:35:13,802 INFO L630 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 [2019-11-07 04:35:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2019-11-07 04:35:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 290. [2019-11-07 04:35:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-11-07 04:35:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 334 transitions. [2019-11-07 04:35:13,838 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 334 transitions. Word has length 73 [2019-11-07 04:35:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:13,838 INFO L462 AbstractCegarLoop]: Abstraction has 290 states and 334 transitions. [2019-11-07 04:35:13,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:35:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 334 transitions. [2019-11-07 04:35:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:35:13,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:13,841 INFO L410 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] [2019-11-07 04:35:13,841 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:13,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2105230958, now seen corresponding path program 1 times [2019-11-07 04:35:13,841 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:13,842 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058885132] [2019-11-07 04:35:13,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:35:13,956 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058885132] [2019-11-07 04:35:13,957 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:13,957 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:35:13,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018385864] [2019-11-07 04:35:13,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:35:13,958 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:13,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:35:13,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:35:13,959 INFO L87 Difference]: Start difference. First operand 290 states and 334 transitions. Second operand 7 states. [2019-11-07 04:35:14,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:14,461 INFO L93 Difference]: Finished difference Result 583 states and 693 transitions. [2019-11-07 04:35:14,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:35:14,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2019-11-07 04:35:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:14,468 INFO L225 Difference]: With dead ends: 583 [2019-11-07 04:35:14,468 INFO L226 Difference]: Without dead ends: 318 [2019-11-07 04:35:14,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:35:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2019-11-07 04:35:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 287. [2019-11-07 04:35:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2019-11-07 04:35:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 325 transitions. [2019-11-07 04:35:14,525 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 325 transitions. Word has length 73 [2019-11-07 04:35:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:14,525 INFO L462 AbstractCegarLoop]: Abstraction has 287 states and 325 transitions. [2019-11-07 04:35:14,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:35:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 325 transitions. [2019-11-07 04:35:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-07 04:35:14,528 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:14,529 INFO L410 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] [2019-11-07 04:35:14,529 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:14,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:14,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1158173324, now seen corresponding path program 1 times [2019-11-07 04:35:14,530 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:14,530 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927215486] [2019-11-07 04:35:14,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:35:14,722 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927215486] [2019-11-07 04:35:14,722 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:35:14,723 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:35:14,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374353580] [2019-11-07 04:35:14,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:35:14,724 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:35:14,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:35:14,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:35:14,725 INFO L87 Difference]: Start difference. First operand 287 states and 325 transitions. Second operand 9 states. [2019-11-07 04:35:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:35:15,420 INFO L93 Difference]: Finished difference Result 880 states and 1022 transitions. [2019-11-07 04:35:15,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:35:15,421 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2019-11-07 04:35:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:35:15,425 INFO L225 Difference]: With dead ends: 880 [2019-11-07 04:35:15,425 INFO L226 Difference]: Without dead ends: 674 [2019-11-07 04:35:15,427 INFO L630 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 [2019-11-07 04:35:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-11-07 04:35:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 574. [2019-11-07 04:35:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2019-11-07 04:35:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 657 transitions. [2019-11-07 04:35:15,495 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 657 transitions. Word has length 76 [2019-11-07 04:35:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:35:15,495 INFO L462 AbstractCegarLoop]: Abstraction has 574 states and 657 transitions. [2019-11-07 04:35:15,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:35:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 657 transitions. [2019-11-07 04:35:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 04:35:15,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:35:15,498 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:35:15,498 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:35:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:35:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash -234265357, now seen corresponding path program 1 times [2019-11-07 04:35:15,499 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:35:15,499 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414785369] [2019-11-07 04:35:15,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:35:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 04:35:15,618 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414785369] [2019-11-07 04:35:15,618 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130300434] [2019-11-07 04:35:15,618 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 [2019-11-07 04:35:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:35:15,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 04:35:15,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:35:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:35:16,011 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:35:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 04:35:16,388 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [810718725] [2019-11-07 04:35:16,415 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2019-11-07 04:35:16,416 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:35:16,422 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:35:16,429 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:35:16,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:35:27,805 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-07 04:35:29,530 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:35:29,697 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:35:29,851 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:35:29,997 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:35:30,343 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:35:30,464 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:35:30,582 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:35:30,770 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:35:30,781 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-11-07 04:35:30,793 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-11-07 04:35:31,053 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:35:31,233 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:35:31,426 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:31,561 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:35:31,698 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:35:31,827 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:31,939 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:35:32,119 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:35:32,264 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:32,378 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:35:32,492 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:35:32,647 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:32,805 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:32,935 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:33,085 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:33,266 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:33,389 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:33,508 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:33,619 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:33,752 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:33,896 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:34,037 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:34,163 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:34,318 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:34,523 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:35:34,654 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:35:34,803 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:35:34,932 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:35:35,055 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:35:35,198 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:35:35,362 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:35:35,476 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:35:35,605 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:35:35,722 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:35:35,866 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:35:35,989 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:35:36,009 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 548 for LOIs [2019-11-07 04:35:36,174 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:35:36,408 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:36,616 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 04:35:36,738 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:36,747 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 544 for LOIs [2019-11-07 04:35:36,758 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 544 for LOIs [2019-11-07 04:35:36,779 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 550 for LOIs [2019-11-07 04:35:37,069 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:35:37,594 WARN L191 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:38,301 WARN L191 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 579 [2019-11-07 04:35:38,475 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:35:38,785 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:39,248 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 579 [2019-11-07 04:35:39,380 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:35:39,701 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:35:40,115 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 579 [2019-11-07 04:35:40,538 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:35:41,332 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:35:41,766 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-11-07 04:35:42,560 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2019-11-07 04:35:43,068 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-11-07 04:35:43,203 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 199 [2019-11-07 04:35:43,539 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2019-11-07 04:35:43,801 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 623 DAG size of output: 621 [2019-11-07 04:35:44,334 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 622 [2019-11-07 04:35:44,582 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 623 [2019-11-07 04:35:44,835 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 623 [2019-11-07 04:35:45,492 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 142 for LOIs [2019-11-07 04:35:45,496 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 151 for LOIs