/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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:37:10,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:37:10,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:37:10,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:37:10,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:37:10,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:37:10,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:37:10,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:37:10,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:37:10,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:37:10,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:37:10,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:37:10,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:37:10,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:37:10,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:37:10,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:37:10,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:37:10,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:37:10,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:37:10,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:37:10,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:37:10,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:37:10,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:37:10,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:37:10,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:37:10,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:37:10,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:37:10,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:37:10,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:37:10,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:37:10,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:37:10,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:37:10,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:37:10,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:37:10,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:37:10,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:37:10,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:37:10,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:37:10,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:37:10,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:37:10,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:37:10,545 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 04:37:10,558 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:37:10,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:37:10,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:37:10,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:37:10,560 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:37:10,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:37:10,561 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:37:10,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:37:10,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:37:10,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:37:10,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:37:10,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:37:10,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:37:10,562 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:37:10,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:37:10,562 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:37:10,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:37:10,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:37:10,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:37:10,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:37:10,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:37:10,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:37:10,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:37:10,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:37:10,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:37:10,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:37:10,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:37:10,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:37:10,565 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 04:37:10,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:37:10,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:37:10,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:37:10,864 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:37:10,865 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:37:10,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2019-11-07 04:37:10,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6166ab556/4125425ea5e047ad9f5f37f7933bbe0c/FLAGcb8834a50 [2019-11-07 04:37:11,479 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:37:11,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2019-11-07 04:37:11,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6166ab556/4125425ea5e047ad9f5f37f7933bbe0c/FLAGcb8834a50 [2019-11-07 04:37:11,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6166ab556/4125425ea5e047ad9f5f37f7933bbe0c [2019-11-07 04:37:11,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:37:11,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:37:11,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:37:11,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:37:11,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:37:11,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:37:11" (1/1) ... [2019-11-07 04:37:11,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d97285e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:11, skipping insertion in model container [2019-11-07 04:37:11,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:37:11" (1/1) ... [2019-11-07 04:37:11,807 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:37:11,877 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:37:12,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:37:12,297 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:37:12,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:37:12,424 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:37:12,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12 WrapperNode [2019-11-07 04:37:12,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:37:12,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:37:12,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:37:12,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:37:12,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (1/1) ... [2019-11-07 04:37:12,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (1/1) ... [2019-11-07 04:37:12,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (1/1) ... [2019-11-07 04:37:12,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (1/1) ... [2019-11-07 04:37:12,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (1/1) ... [2019-11-07 04:37:12,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (1/1) ... [2019-11-07 04:37:12,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (1/1) ... [2019-11-07 04:37:12,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:37:12,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:37:12,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:37:12,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:37:12,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (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 04:37:12,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:37:12,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:37:12,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:37:12,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:37:12,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:37:12,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:37:12,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:37:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:37:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:37:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:37:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:37:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:37:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:37:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:37:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:37:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:37:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:37:12,571 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:37:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:37:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:37:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:37:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:37:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:37:12,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:37:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:37:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:37:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:37:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:37:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:37:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:37:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:37:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:37:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:37:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:37:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:37:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:37:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:37:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:37:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:37:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:37:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:37:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:37:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:37:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:37:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:37:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:37:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:37:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:37:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:37:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:37:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-07 04:37:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:37:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:37:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:37:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:37:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:37:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:37:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:37:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:37:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:37:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:37:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:37:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:37:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:37:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:37:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:37:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:37:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:37:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:37:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:37:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:37:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:37:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:37:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:37:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:37:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:37:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:37:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:37:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-07 04:37:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-07 04:37:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:37:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:37:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:37:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:37:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:37:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:37:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:37:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:37:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:37:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:37:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:37:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:37:14,346 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:37:14,348 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:37:14,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:37:14 BoogieIcfgContainer [2019-11-07 04:37:14,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:37:14,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:37:14,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:37:14,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:37:14,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:37:11" (1/3) ... [2019-11-07 04:37:14,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618992b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:37:14, skipping insertion in model container [2019-11-07 04:37:14,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:12" (2/3) ... [2019-11-07 04:37:14,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618992b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:37:14, skipping insertion in model container [2019-11-07 04:37:14,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:37:14" (3/3) ... [2019-11-07 04:37:14,359 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2019-11-07 04:37:14,369 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:37:14,382 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:37:14,395 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:37:14,429 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:37:14,429 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:37:14,429 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:37:14,430 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:37:14,430 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:37:14,430 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:37:14,431 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:37:14,431 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:37:14,461 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2019-11-07 04:37:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-07 04:37:14,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:14,478 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 04:37:14,481 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:14,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:14,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2066518771, now seen corresponding path program 1 times [2019-11-07 04:37:14,499 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:14,500 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175724163] [2019-11-07 04:37:14,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:14,911 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 04:37:14,911 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175724163] [2019-11-07 04:37:14,914 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:14,915 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:37:14,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399264271] [2019-11-07 04:37:14,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:37:14,925 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:14,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:37:14,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:37:14,942 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 2 states. [2019-11-07 04:37:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:14,988 INFO L93 Difference]: Finished difference Result 250 states and 297 transitions. [2019-11-07 04:37:14,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:37:14,989 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-11-07 04:37:14,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:15,004 INFO L225 Difference]: With dead ends: 250 [2019-11-07 04:37:15,005 INFO L226 Difference]: Without dead ends: 127 [2019-11-07 04:37:15,010 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 04:37:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-07 04:37:15,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-11-07 04:37:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-07 04:37:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2019-11-07 04:37:15,103 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 52 [2019-11-07 04:37:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:15,104 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2019-11-07 04:37:15,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:37:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2019-11-07 04:37:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-07 04:37:15,111 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:15,111 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 04:37:15,112 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:15,112 INFO L82 PathProgramCache]: Analyzing trace with hash 892628661, now seen corresponding path program 1 times [2019-11-07 04:37:15,113 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:15,113 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046502082] [2019-11-07 04:37:15,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:15,262 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 04:37:15,263 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046502082] [2019-11-07 04:37:15,263 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:15,263 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:37:15,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030785603] [2019-11-07 04:37:15,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:37:15,267 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:15,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:37:15,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:37:15,267 INFO L87 Difference]: Start difference. First operand 127 states and 144 transitions. Second operand 3 states. [2019-11-07 04:37:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:15,314 INFO L93 Difference]: Finished difference Result 208 states and 236 transitions. [2019-11-07 04:37:15,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:37:15,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-11-07 04:37:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:15,318 INFO L225 Difference]: With dead ends: 208 [2019-11-07 04:37:15,319 INFO L226 Difference]: Without dead ends: 119 [2019-11-07 04:37:15,321 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 04:37:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-07 04:37:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-11-07 04:37:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-07 04:37:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2019-11-07 04:37:15,345 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 53 [2019-11-07 04:37:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:15,346 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2019-11-07 04:37:15,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:37:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2019-11-07 04:37:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-07 04:37:15,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:15,356 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] [2019-11-07 04:37:15,356 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:15,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1014031683, now seen corresponding path program 1 times [2019-11-07 04:37:15,357 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:15,358 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435601364] [2019-11-07 04:37:15,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:15,605 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 04:37:15,606 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435601364] [2019-11-07 04:37:15,606 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:15,606 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:37:15,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616444604] [2019-11-07 04:37:15,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:37:15,609 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:15,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:37:15,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:37:15,612 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand 7 states. [2019-11-07 04:37:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:15,952 INFO L93 Difference]: Finished difference Result 213 states and 242 transitions. [2019-11-07 04:37:15,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:37:15,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2019-11-07 04:37:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:15,954 INFO L225 Difference]: With dead ends: 213 [2019-11-07 04:37:15,954 INFO L226 Difference]: Without dead ends: 119 [2019-11-07 04:37:15,956 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 04:37:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-07 04:37:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-11-07 04:37:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-07 04:37:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2019-11-07 04:37:15,969 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 55 [2019-11-07 04:37:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:15,971 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2019-11-07 04:37:15,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:37:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2019-11-07 04:37:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-07 04:37:15,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:15,973 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] [2019-11-07 04:37:15,973 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:15,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:15,973 INFO L82 PathProgramCache]: Analyzing trace with hash -70838254, now seen corresponding path program 1 times [2019-11-07 04:37:15,973 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:15,974 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633494404] [2019-11-07 04:37:15,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:16,136 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 04:37:16,136 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633494404] [2019-11-07 04:37:16,137 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:16,137 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:37:16,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8066422] [2019-11-07 04:37:16,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:37:16,138 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:16,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:37:16,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:37:16,139 INFO L87 Difference]: Start difference. First operand 119 states and 132 transitions. Second operand 5 states. [2019-11-07 04:37:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:16,659 INFO L93 Difference]: Finished difference Result 303 states and 353 transitions. [2019-11-07 04:37:16,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:37:16,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-11-07 04:37:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:16,663 INFO L225 Difference]: With dead ends: 303 [2019-11-07 04:37:16,663 INFO L226 Difference]: Without dead ends: 209 [2019-11-07 04:37:16,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:37:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-11-07 04:37:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 194. [2019-11-07 04:37:16,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2019-11-07 04:37:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 215 transitions. [2019-11-07 04:37:16,688 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 215 transitions. Word has length 68 [2019-11-07 04:37:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:16,688 INFO L462 AbstractCegarLoop]: Abstraction has 194 states and 215 transitions. [2019-11-07 04:37:16,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:37:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 215 transitions. [2019-11-07 04:37:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 04:37:16,690 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:16,690 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, 1] [2019-11-07 04:37:16,690 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2098768733, now seen corresponding path program 1 times [2019-11-07 04:37:16,691 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:16,691 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537143661] [2019-11-07 04:37:16,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:16,795 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 04:37:16,795 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537143661] [2019-11-07 04:37:16,795 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:16,796 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:37:16,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383124607] [2019-11-07 04:37:16,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:37:16,797 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:16,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:37:16,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:37:16,797 INFO L87 Difference]: Start difference. First operand 194 states and 215 transitions. Second operand 7 states. [2019-11-07 04:37:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:17,413 INFO L93 Difference]: Finished difference Result 377 states and 431 transitions. [2019-11-07 04:37:17,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:37:17,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2019-11-07 04:37:17,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:17,418 INFO L225 Difference]: With dead ends: 377 [2019-11-07 04:37:17,418 INFO L226 Difference]: Without dead ends: 208 [2019-11-07 04:37:17,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 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 04:37:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-11-07 04:37:17,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 193. [2019-11-07 04:37:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-11-07 04:37:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 212 transitions. [2019-11-07 04:37:17,440 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 212 transitions. Word has length 77 [2019-11-07 04:37:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:17,440 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 212 transitions. [2019-11-07 04:37:17,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:37:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 212 transitions. [2019-11-07 04:37:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-07 04:37:17,442 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:17,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:37:17,443 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash -719855939, now seen corresponding path program 1 times [2019-11-07 04:37:17,443 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:17,444 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330704408] [2019-11-07 04:37:17,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:17,669 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 04:37:17,670 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330704408] [2019-11-07 04:37:17,670 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:17,670 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:37:17,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440050089] [2019-11-07 04:37:17,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:37:17,671 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:17,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:37:17,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:37:17,672 INFO L87 Difference]: Start difference. First operand 193 states and 212 transitions. Second operand 12 states. [2019-11-07 04:37:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:18,593 INFO L93 Difference]: Finished difference Result 498 states and 568 transitions. [2019-11-07 04:37:18,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 04:37:18,593 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2019-11-07 04:37:18,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:18,598 INFO L225 Difference]: With dead ends: 498 [2019-11-07 04:37:18,598 INFO L226 Difference]: Without dead ends: 330 [2019-11-07 04:37:18,599 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 04:37:18,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2019-11-07 04:37:18,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 321. [2019-11-07 04:37:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2019-11-07 04:37:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 363 transitions. [2019-11-07 04:37:18,634 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 363 transitions. Word has length 90 [2019-11-07 04:37:18,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:18,634 INFO L462 AbstractCegarLoop]: Abstraction has 321 states and 363 transitions. [2019-11-07 04:37:18,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:37:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 363 transitions. [2019-11-07 04:37:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 04:37:18,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:18,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:37:18,637 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:18,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1861289177, now seen corresponding path program 1 times [2019-11-07 04:37:18,638 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:18,638 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57664715] [2019-11-07 04:37:18,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:18,855 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 04:37:18,856 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57664715] [2019-11-07 04:37:18,856 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:37:18,856 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:37:18,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076067514] [2019-11-07 04:37:18,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:37:18,858 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:37:18,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:37:18,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:37:18,859 INFO L87 Difference]: Start difference. First operand 321 states and 363 transitions. Second operand 9 states. [2019-11-07 04:37:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:37:19,723 INFO L93 Difference]: Finished difference Result 991 states and 1155 transitions. [2019-11-07 04:37:19,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:37:19,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2019-11-07 04:37:19,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:37:19,730 INFO L225 Difference]: With dead ends: 991 [2019-11-07 04:37:19,730 INFO L226 Difference]: Without dead ends: 752 [2019-11-07 04:37:19,732 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 04:37:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-11-07 04:37:19,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 655. [2019-11-07 04:37:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-11-07 04:37:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 747 transitions. [2019-11-07 04:37:19,828 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 747 transitions. Word has length 93 [2019-11-07 04:37:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:37:19,830 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 747 transitions. [2019-11-07 04:37:19,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:37:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 747 transitions. [2019-11-07 04:37:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-07 04:37:19,835 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:37:19,835 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:37:19,836 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:37:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:37:19,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1653320696, now seen corresponding path program 1 times [2019-11-07 04:37:19,837 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:37:19,837 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974904690] [2019-11-07 04:37:19,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:37:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 04:37:20,023 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974904690] [2019-11-07 04:37:20,023 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133116933] [2019-11-07 04:37:20,023 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 04:37:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:37:20,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 04:37:20,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:37:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:37:20,553 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:37:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 04:37:21,030 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1665494863] [2019-11-07 04:37:21,068 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2019-11-07 04:37:21,068 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:37:21,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:37:21,080 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:37:21,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:37:31,278 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-07 04:37:33,069 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:37:33,244 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:37:33,422 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:37:33,555 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:37:33,811 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:37:33,937 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:37:34,255 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:37:34,266 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-11-07 04:37:34,283 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-11-07 04:37:34,673 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:34,968 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:35,204 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:35,340 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:35,469 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:35,622 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:35,725 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:35,836 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:36,018 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:36,132 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:36,241 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:36,367 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:36,555 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:36,674 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:36,827 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:36,950 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:37,069 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:37,227 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:37,348 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:37,460 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:37,580 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:37,689 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:37,836 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:38,024 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:38,190 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-11-07 04:37:38,301 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-11-07 04:37:38,449 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:38,601 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-11-07 04:37:38,724 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-11-07 04:37:38,863 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:39,050 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:39,180 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:39,345 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:37:39,479 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:39,603 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:39,741 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:37:39,760 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 546 for LOIs [2019-11-07 04:37:40,172 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:40,300 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:40,415 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:37:40,553 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:37:40,561 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 550 for LOIs [2019-11-07 04:37:40,797 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:37:41,538 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:37:42,120 WARN L191 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 575 [2019-11-07 04:37:42,932 WARN L191 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-11-07 04:37:43,439 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 201 [2019-11-07 04:37:43,694 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 597 [2019-11-07 04:37:43,873 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 597 [2019-11-07 04:37:44,036 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 599 DAG size of output: 599 [2019-11-07 04:37:44,361 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 600 [2019-11-07 04:37:44,656 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 603 DAG size of output: 590 [2019-11-07 04:37:44,818 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 589 [2019-11-07 04:37:44,994 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 590 DAG size of output: 590 [2019-11-07 04:37:45,602 WARN L191 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 627 DAG size of output: 627 [2019-11-07 04:37:46,171 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 600 [2019-11-07 04:37:46,489 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 600 [2019-11-07 04:37:46,694 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 603 DAG size of output: 590 [2019-11-07 04:37:46,832 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 589 [2019-11-07 04:37:47,026 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 590 DAG size of output: 590 [2019-11-07 04:37:47,183 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 603 DAG size of output: 590 [2019-11-07 04:37:47,347 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 589 [2019-11-07 04:37:47,532 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 590 DAG size of output: 590 [2019-11-07 04:37:47,578 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 571 for LOIs [2019-11-07 04:37:47,596 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 569 for LOIs [2019-11-07 04:37:47,770 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 572 [2019-11-07 04:37:47,914 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-11-07 04:37:48,092 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 578 [2019-11-07 04:37:48,228 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 572 [2019-11-07 04:37:48,375 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 571 [2019-11-07 04:37:48,568 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 578 [2019-11-07 04:37:48,704 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 572