/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_spec4_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:33:09,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:33:09,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:33:09,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:33:09,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:33:09,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:33:09,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:33:09,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:33:09,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:33:09,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:33:09,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:33:09,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:33:09,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:33:09,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:33:09,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:33:09,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:33:09,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:33:09,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:33:09,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:33:09,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:33:09,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:33:09,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:33:09,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:33:09,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:33:09,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:33:09,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:33:09,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:33:09,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:33:09,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:33:09,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:33:09,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:33:09,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:33:09,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:33:09,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:33:09,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:33:09,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:33:09,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:33:09,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:33:09,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:33:09,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:33:09,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:33:09,678 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 04:33:09,712 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:33:09,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:33:09,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:33:09,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:33:09,714 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:33:09,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:33:09,714 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:33:09,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:33:09,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:33:09,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:33:09,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:33:09,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:33:09,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:33:09,719 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:33:09,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:33:09,720 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:33:09,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:33:09,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:33:09,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:33:09,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:33:09,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:33:09,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:33:09,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:33:09,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:33:09,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:33:09,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:33:09,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:33:09,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:33:09,726 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 04:33:10,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:33:10,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:33:10,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:33:10,065 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:33:10,066 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:33:10,066 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2019-11-07 04:33:10,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89cedfe7a/99e2272ea1a549eb93a0b8780547b81d/FLAGafeb2b2af [2019-11-07 04:33:10,695 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:33:10,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2019-11-07 04:33:10,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89cedfe7a/99e2272ea1a549eb93a0b8780547b81d/FLAGafeb2b2af [2019-11-07 04:33:10,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89cedfe7a/99e2272ea1a549eb93a0b8780547b81d [2019-11-07 04:33:10,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:33:10,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:33:10,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:33:10,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:33:11,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:33:11,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:10" (1/1) ... [2019-11-07 04:33:11,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cf8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11, skipping insertion in model container [2019-11-07 04:33:11,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:10" (1/1) ... [2019-11-07 04:33:11,012 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:33:11,066 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:33:11,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:33:11,516 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:33:11,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:33:11,701 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:33:11,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11 WrapperNode [2019-11-07 04:33:11,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:33:11,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:33:11,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:33:11,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:33:11,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:33:11,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:33:11,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:33:11,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:33:11,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (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 04:33:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:33:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:33:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:33:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:33:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:33:11,871 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:33:11,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:33:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:33:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:33:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:33:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:33:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:33:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:33:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:33:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:33:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:33:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:33:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:33:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:33:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:33:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:33:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:33:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 04:33:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:33:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:33:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:33:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:33:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:33:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:33:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:33:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:33:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:33:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:33:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:33:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:33:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:33:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:33:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:33:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:33:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:33:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:33:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:33:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:33:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:33:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:33:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:33:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:33:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:33:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:33:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:33:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:33:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:33:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:33:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:33:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:33:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:33:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:33:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:33:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:33:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 04:33:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:33:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:33:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:33:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:33:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:33:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:33:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:33:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:33:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:33:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:33:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:33:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:33:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:33:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:33:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:33:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:33:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:33:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:33:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:33:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:33:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:33:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:33:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:33:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:33:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:33:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:33:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:33:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:33:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:33:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:33:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:33:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:33:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:33:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:33:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:33:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:33:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:33:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:33:13,483 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:33:13,484 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:33:13,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:13 BoogieIcfgContainer [2019-11-07 04:33:13,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:33:13,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:33:13,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:33:13,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:33:13,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:33:10" (1/3) ... [2019-11-07 04:33:13,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29660d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:13, skipping insertion in model container [2019-11-07 04:33:13,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (2/3) ... [2019-11-07 04:33:13,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29660d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:13, skipping insertion in model container [2019-11-07 04:33:13,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:13" (3/3) ... [2019-11-07 04:33:13,494 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2019-11-07 04:33:13,504 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:33:13,513 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:33:13,527 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:33:13,559 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:33:13,560 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:33:13,560 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:33:13,560 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:33:13,560 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:33:13,561 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:33:13,561 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:33:13,562 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:33:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2019-11-07 04:33:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 04:33:13,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:13,616 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:13,619 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:13,627 INFO L82 PathProgramCache]: Analyzing trace with hash 588811842, now seen corresponding path program 1 times [2019-11-07 04:33:13,641 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:13,641 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335218627] [2019-11-07 04:33:13,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:14,036 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335218627] [2019-11-07 04:33:14,037 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:14,037 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:33:14,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403555847] [2019-11-07 04:33:14,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:33:14,046 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:14,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:33:14,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:33:14,067 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 2 states. [2019-11-07 04:33:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:14,149 INFO L93 Difference]: Finished difference Result 231 states and 280 transitions. [2019-11-07 04:33:14,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:33:14,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-11-07 04:33:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:14,173 INFO L225 Difference]: With dead ends: 231 [2019-11-07 04:33:14,173 INFO L226 Difference]: Without dead ends: 116 [2019-11-07 04:33:14,181 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 04:33:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-07 04:33:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2019-11-07 04:33:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-07 04:33:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2019-11-07 04:33:14,271 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 42 [2019-11-07 04:33:14,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:14,272 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2019-11-07 04:33:14,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:33:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2019-11-07 04:33:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:33:14,278 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:14,278 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:14,279 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:14,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:14,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2031994381, now seen corresponding path program 1 times [2019-11-07 04:33:14,280 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:14,281 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062803624] [2019-11-07 04:33:14,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:14,507 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062803624] [2019-11-07 04:33:14,508 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:14,508 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:33:14,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884391472] [2019-11-07 04:33:14,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:33:14,511 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:14,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:33:14,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:14,512 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand 3 states. [2019-11-07 04:33:14,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:14,552 INFO L93 Difference]: Finished difference Result 179 states and 205 transitions. [2019-11-07 04:33:14,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:33:14,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-07 04:33:14,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:14,555 INFO L225 Difference]: With dead ends: 179 [2019-11-07 04:33:14,556 INFO L226 Difference]: Without dead ends: 108 [2019-11-07 04:33:14,557 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 04:33:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-07 04:33:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2019-11-07 04:33:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-07 04:33:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2019-11-07 04:33:14,571 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 43 [2019-11-07 04:33:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:14,572 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2019-11-07 04:33:14,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:33:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2019-11-07 04:33:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 04:33:14,574 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:14,574 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:14,575 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash -418862698, now seen corresponding path program 1 times [2019-11-07 04:33:14,575 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:14,576 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373513567] [2019-11-07 04:33:14,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:14,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373513567] [2019-11-07 04:33:14,805 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:14,806 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:33:14,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898538792] [2019-11-07 04:33:14,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:33:14,810 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:14,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:33:14,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:33:14,811 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand 7 states. [2019-11-07 04:33:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:15,328 INFO L93 Difference]: Finished difference Result 325 states and 385 transitions. [2019-11-07 04:33:15,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:33:15,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-11-07 04:33:15,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:15,332 INFO L225 Difference]: With dead ends: 325 [2019-11-07 04:33:15,332 INFO L226 Difference]: Without dead ends: 239 [2019-11-07 04:33:15,334 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:33:15,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-11-07 04:33:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 227. [2019-11-07 04:33:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-11-07 04:33:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 268 transitions. [2019-11-07 04:33:15,368 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 268 transitions. Word has length 47 [2019-11-07 04:33:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:15,368 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 268 transitions. [2019-11-07 04:33:15,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:33:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 268 transitions. [2019-11-07 04:33:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-07 04:33:15,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:15,374 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:15,374 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash -450314022, now seen corresponding path program 1 times [2019-11-07 04:33:15,375 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:15,375 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708713943] [2019-11-07 04:33:15,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:15,568 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708713943] [2019-11-07 04:33:15,568 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:15,569 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:33:15,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224883759] [2019-11-07 04:33:15,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:33:15,570 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:15,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:33:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:33:15,571 INFO L87 Difference]: Start difference. First operand 227 states and 268 transitions. Second operand 10 states. [2019-11-07 04:33:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:16,211 INFO L93 Difference]: Finished difference Result 803 states and 994 transitions. [2019-11-07 04:33:16,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:33:16,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-11-07 04:33:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:16,219 INFO L225 Difference]: With dead ends: 803 [2019-11-07 04:33:16,220 INFO L226 Difference]: Without dead ends: 598 [2019-11-07 04:33:16,223 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:33:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-07 04:33:16,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 574. [2019-11-07 04:33:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2019-11-07 04:33:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 695 transitions. [2019-11-07 04:33:16,305 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 695 transitions. Word has length 51 [2019-11-07 04:33:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:16,306 INFO L462 AbstractCegarLoop]: Abstraction has 574 states and 695 transitions. [2019-11-07 04:33:16,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:33:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 695 transitions. [2019-11-07 04:33:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 04:33:16,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:16,310 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:16,310 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:16,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:16,311 INFO L82 PathProgramCache]: Analyzing trace with hash 431309406, now seen corresponding path program 1 times [2019-11-07 04:33:16,311 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:16,311 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817088225] [2019-11-07 04:33:16,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:16,406 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817088225] [2019-11-07 04:33:16,407 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:16,407 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:33:16,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563523358] [2019-11-07 04:33:16,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:33:16,408 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:16,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:33:16,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:33:16,409 INFO L87 Difference]: Start difference. First operand 574 states and 695 transitions. Second operand 4 states. [2019-11-07 04:33:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:16,732 INFO L93 Difference]: Finished difference Result 1434 states and 1905 transitions. [2019-11-07 04:33:16,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:33:16,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2019-11-07 04:33:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:16,741 INFO L225 Difference]: With dead ends: 1434 [2019-11-07 04:33:16,741 INFO L226 Difference]: Without dead ends: 882 [2019-11-07 04:33:16,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:33:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-11-07 04:33:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 749. [2019-11-07 04:33:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-11-07 04:33:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 896 transitions. [2019-11-07 04:33:16,837 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 896 transitions. Word has length 57 [2019-11-07 04:33:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:16,837 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 896 transitions. [2019-11-07 04:33:16,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:33:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 896 transitions. [2019-11-07 04:33:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-07 04:33:16,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:16,844 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:33:16,845 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:16,845 INFO L82 PathProgramCache]: Analyzing trace with hash -980024447, now seen corresponding path program 1 times [2019-11-07 04:33:16,845 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:16,846 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261594602] [2019-11-07 04:33:16,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:33:17,001 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261594602] [2019-11-07 04:33:17,001 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439111118] [2019-11-07 04:33:17,002 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 04:33:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:17,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:33:17,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:33:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:33:17,263 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:33:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:33:17,387 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:33:17,387 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-11-07 04:33:17,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343447539] [2019-11-07 04:33:17,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:33:17,388 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:33:17,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:33:17,389 INFO L87 Difference]: Start difference. First operand 749 states and 896 transitions. Second operand 7 states. [2019-11-07 04:33:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:17,695 INFO L93 Difference]: Finished difference Result 762 states and 912 transitions. [2019-11-07 04:33:17,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:33:17,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2019-11-07 04:33:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:17,706 INFO L225 Difference]: With dead ends: 762 [2019-11-07 04:33:17,706 INFO L226 Difference]: Without dead ends: 759 [2019-11-07 04:33:17,707 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:33:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-11-07 04:33:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 749. [2019-11-07 04:33:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-11-07 04:33:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 893 transitions. [2019-11-07 04:33:17,781 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 893 transitions. Word has length 79 [2019-11-07 04:33:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:17,783 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 893 transitions. [2019-11-07 04:33:17,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:33:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 893 transitions. [2019-11-07 04:33:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-07 04:33:17,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:17,790 INFO L410 BasicCegarLoop]: trace histogram [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 04:33:17,995 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:33:17,996 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:17,997 INFO L82 PathProgramCache]: Analyzing trace with hash 946442780, now seen corresponding path program 1 times [2019-11-07 04:33:17,997 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:17,997 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982845456] [2019-11-07 04:33:17,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:33:18,222 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982845456] [2019-11-07 04:33:18,222 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:18,227 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:33:18,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132936794] [2019-11-07 04:33:18,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:33:18,228 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:18,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:33:18,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:18,229 INFO L87 Difference]: Start difference. First operand 749 states and 893 transitions. Second operand 3 states. [2019-11-07 04:33:18,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:18,359 INFO L93 Difference]: Finished difference Result 1195 states and 1429 transitions. [2019-11-07 04:33:18,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:33:18,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-11-07 04:33:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:18,369 INFO L225 Difference]: With dead ends: 1195 [2019-11-07 04:33:18,370 INFO L226 Difference]: Without dead ends: 468 [2019-11-07 04:33:18,376 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 04:33:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-11-07 04:33:18,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 453. [2019-11-07 04:33:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2019-11-07 04:33:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 528 transitions. [2019-11-07 04:33:18,446 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 528 transitions. Word has length 101 [2019-11-07 04:33:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:18,448 INFO L462 AbstractCegarLoop]: Abstraction has 453 states and 528 transitions. [2019-11-07 04:33:18,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:33:18,449 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 528 transitions. [2019-11-07 04:33:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-07 04:33:18,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:18,458 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:33:18,458 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash 926868855, now seen corresponding path program 1 times [2019-11-07 04:33:18,459 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:18,459 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292901623] [2019-11-07 04:33:18,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:33:18,726 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292901623] [2019-11-07 04:33:18,727 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:18,727 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-07 04:33:18,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586896014] [2019-11-07 04:33:18,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:33:18,729 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:18,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:33:18,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:33:18,729 INFO L87 Difference]: Start difference. First operand 453 states and 528 transitions. Second operand 14 states. [2019-11-07 04:33:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:19,148 INFO L93 Difference]: Finished difference Result 858 states and 1032 transitions. [2019-11-07 04:33:19,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:33:19,149 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 103 [2019-11-07 04:33:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:19,154 INFO L225 Difference]: With dead ends: 858 [2019-11-07 04:33:19,154 INFO L226 Difference]: Without dead ends: 676 [2019-11-07 04:33:19,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:33:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2019-11-07 04:33:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 563. [2019-11-07 04:33:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2019-11-07 04:33:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 661 transitions. [2019-11-07 04:33:19,224 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 661 transitions. Word has length 103 [2019-11-07 04:33:19,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:19,224 INFO L462 AbstractCegarLoop]: Abstraction has 563 states and 661 transitions. [2019-11-07 04:33:19,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:33:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 661 transitions. [2019-11-07 04:33:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-07 04:33:19,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:19,229 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:33:19,229 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:19,230 INFO L82 PathProgramCache]: Analyzing trace with hash -271977700, now seen corresponding path program 1 times [2019-11-07 04:33:19,230 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:19,231 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829329934] [2019-11-07 04:33:19,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:33:19,477 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829329934] [2019-11-07 04:33:19,477 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781679563] [2019-11-07 04:33:19,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:33:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:19,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 56 conjunts are in the unsatisfiable core [2019-11-07 04:33:19,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:33:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:33:19,900 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:33:20,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:20,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:20,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:20,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:20,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:20,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:20,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 04:33:21,078 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [475077320] [2019-11-07 04:33:21,106 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2019-11-07 04:33:21,106 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:33:21,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:33:21,121 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:33:21,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:33:29,808 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-11-07 04:33:31,630 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:33:31,767 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:31,940 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:32,081 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:32,376 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:33:32,484 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:32,811 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:33:32,825 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-11-07 04:33:32,838 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-11-07 04:33:33,099 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:33:33,300 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:33:33,478 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:33,639 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:33:33,775 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:33:33,908 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:34,011 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:33:34,135 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:33:34,354 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:34,565 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:33:34,693 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:34,865 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:34,990 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:35,117 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:35,241 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:35,350 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:35,509 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:35,616 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:35,724 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:35,840 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:35,948 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:36,100 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:36,220 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:36,411 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:33:36,567 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:33:36,693 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:33:36,826 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:33:36,974 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:33:37,098 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:33:37,308 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:33:37,420 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:33:37,577 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:33:37,690 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:33:37,817 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:33:37,940 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:33:37,961 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 546 for LOIs [2019-11-07 04:33:37,976 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 540 for LOIs [2019-11-07 04:33:37,987 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 540 for LOIs [2019-11-07 04:33:37,999 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 542 for LOIs [2019-11-07 04:33:38,185 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 555 [2019-11-07 04:33:38,534 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:39,086 WARN L191 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 571 [2019-11-07 04:33:39,703 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 586 DAG size of output: 584 [2019-11-07 04:33:39,896 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-11-07 04:33:40,050 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 590 [2019-11-07 04:33:40,292 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 588 [2019-11-07 04:33:40,630 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 589 [2019-11-07 04:33:41,264 WARN L191 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 590 DAG size of output: 590 [2019-11-07 04:33:41,876 WARN L191 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 599 [2019-11-07 04:33:42,322 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-07 04:33:42,557 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 190 [2019-11-07 04:33:42,864 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 603 [2019-11-07 04:33:43,008 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 603 [2019-11-07 04:33:43,166 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 617 DAG size of output: 617 [2019-11-07 04:33:43,293 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 603 [2019-11-07 04:33:43,422 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 603 [2019-11-07 04:33:43,577 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 617 DAG size of output: 617 [2019-11-07 04:33:43,698 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 619 [2019-11-07 04:33:43,891 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 619 [2019-11-07 04:33:44,102 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 587 [2019-11-07 04:33:44,230 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 587 [2019-11-07 04:33:44,407 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 595 DAG size of output: 595 [2019-11-07 04:33:44,420 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 568 for LOIs [2019-11-07 04:33:44,436 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 136 for LOIs [2019-11-07 04:33:45,357 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 132 for LOIs [2019-11-07 04:33:45,628 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 139 for LOIs [2019-11-07 04:33:45,634 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 147 for LOIs [2019-11-07 04:33:45,639 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 132 for LOIs [2019-11-07 04:33:45,642 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 136 for LOIs [2019-11-07 04:33:45,645 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 540 for LOIs [2019-11-07 04:33:45,656 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 534 for LOIs [2019-11-07 04:33:45,664 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 135 for LOIs [2019-11-07 04:33:46,666 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 150 for LOIs