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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:18:49,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:18:49,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:18:49,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:18:49,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:18:49,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:18:49,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:18:49,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:18:49,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:18:49,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:18:49,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:18:49,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:18:49,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:18:49,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:18:49,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:18:49,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:18:49,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:18:49,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:18:49,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:18:49,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:18:49,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:18:49,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:18:49,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:18:49,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:18:49,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:18:49,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:18:49,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:18:49,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:18:49,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:18:49,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:18:49,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:18:49,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:18:49,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:18:49,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:18:49,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:18:49,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:18:49,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:18:49,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:18:49,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:18:49,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:18:49,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:18:49,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:18:49,844 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:18:49,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:18:49,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:18:49,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:18:49,846 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:18:49,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:18:49,846 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:18:49,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:18:49,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:18:49,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:18:49,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:18:49,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:18:49,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:18:49,847 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:18:49,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:18:49,848 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:18:49,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:18:49,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:18:49,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:18:49,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:18:49,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:18:49,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:49,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:18:49,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:18:49,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:18:49,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:18:49,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:18:49,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:18:49,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:18:50,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:18:50,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:18:50,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:18:50,164 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:18:50,165 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:18:50,165 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-10-13 23:18:50,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d0f5a4a/a1fab9318eac4d48b994c5d6d26877b2/FLAGf7e905819 [2019-10-13 23:18:50,824 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:18:50,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-10-13 23:18:50,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d0f5a4a/a1fab9318eac4d48b994c5d6d26877b2/FLAGf7e905819 [2019-10-13 23:18:51,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d0f5a4a/a1fab9318eac4d48b994c5d6d26877b2 [2019-10-13 23:18:51,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:18:51,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:18:51,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:51,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:18:51,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:18:51,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f9ac17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51, skipping insertion in model container [2019-10-13 23:18:51,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,126 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:18:51,191 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:18:51,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:51,610 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:18:51,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:51,756 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:18:51,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51 WrapperNode [2019-10-13 23:18:51,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:51,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:18:51,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:18:51,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:18:51,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:18:51,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:18:51,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:18:51,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:18:51,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:18:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:18:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:18:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:18:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:18:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:18:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:18:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:18:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:18:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:18:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:18:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:18:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:18:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:18:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:18:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:18:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:18:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:18:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:18:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:18:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:18:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:18:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:18:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:18:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:18:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:18:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:18:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:18:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:18:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:18:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:18:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:18:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:18:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:18:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:18:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:18:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:18:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:18:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:18:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:18:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:18:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:18:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:18:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:18:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:18:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:18:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:18:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:18:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:18:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:18:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:18:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:18:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:18:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:18:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:18:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:18:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:18:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:18:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:18:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:18:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:18:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:18:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:18:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:18:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:18:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:18:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:18:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:18:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:18:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:18:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:18:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:18:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:18:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:18:53,561 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:18:53,561 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:18:53,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:53 BoogieIcfgContainer [2019-10-13 23:18:53,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:18:53,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:18:53,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:18:53,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:18:53,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:51" (1/3) ... [2019-10-13 23:18:53,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca8aa6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:53, skipping insertion in model container [2019-10-13 23:18:53,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51" (2/3) ... [2019-10-13 23:18:53,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca8aa6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:53, skipping insertion in model container [2019-10-13 23:18:53,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:53" (3/3) ... [2019-10-13 23:18:53,576 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2019-10-13 23:18:53,587 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:18:53,596 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:18:53,609 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:18:53,640 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:18:53,641 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:18:53,641 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:18:53,641 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:18:53,642 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:18:53,642 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:18:53,642 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:18:53,642 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:18:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2019-10-13 23:18:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:18:53,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:53,695 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:53,701 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:53,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1645885954, now seen corresponding path program 1 times [2019-10-13 23:18:53,719 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:53,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586446945] [2019-10-13 23:18:53,720 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:53,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:53,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:54,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586446945] [2019-10-13 23:18:54,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:54,190 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:18:54,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695728279] [2019-10-13 23:18:54,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:18:54,196 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:54,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:18:54,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:54,212 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 2 states. [2019-10-13 23:18:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:54,252 INFO L93 Difference]: Finished difference Result 238 states and 291 transitions. [2019-10-13 23:18:54,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:18:54,254 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:18:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:54,268 INFO L225 Difference]: With dead ends: 238 [2019-10-13 23:18:54,268 INFO L226 Difference]: Without dead ends: 121 [2019-10-13 23:18:54,276 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-13 23:18:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-10-13 23:18:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-13 23:18:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2019-10-13 23:18:54,353 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 52 [2019-10-13 23:18:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:54,354 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2019-10-13 23:18:54,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:18:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2019-10-13 23:18:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:18:54,360 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:54,360 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:54,361 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:54,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2118174265, now seen corresponding path program 1 times [2019-10-13 23:18:54,361 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:54,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228753946] [2019-10-13 23:18:54,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:54,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228753946] [2019-10-13 23:18:54,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:54,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:18:54,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340053579] [2019-10-13 23:18:54,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:18:54,510 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:54,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:18:54,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:54,511 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 3 states. [2019-10-13 23:18:54,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:54,555 INFO L93 Difference]: Finished difference Result 189 states and 219 transitions. [2019-10-13 23:18:54,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:18:54,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:18:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:54,559 INFO L225 Difference]: With dead ends: 189 [2019-10-13 23:18:54,559 INFO L226 Difference]: Without dead ends: 113 [2019-10-13 23:18:54,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-13 23:18:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-10-13 23:18:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-13 23:18:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2019-10-13 23:18:54,581 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 53 [2019-10-13 23:18:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:54,581 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2019-10-13 23:18:54,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:18:54,582 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2019-10-13 23:18:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 23:18:54,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:54,585 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:54,585 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1290882824, now seen corresponding path program 1 times [2019-10-13 23:18:54,586 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:54,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951883601] [2019-10-13 23:18:54,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:54,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951883601] [2019-10-13 23:18:54,752 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:54,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:54,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551971101] [2019-10-13 23:18:54,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:54,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:54,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:54,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:54,754 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 7 states. [2019-10-13 23:18:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:55,265 INFO L93 Difference]: Finished difference Result 338 states and 404 transitions. [2019-10-13 23:18:55,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:18:55,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-13 23:18:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:55,274 INFO L225 Difference]: With dead ends: 338 [2019-10-13 23:18:55,277 INFO L226 Difference]: Without dead ends: 250 [2019-10-13 23:18:55,279 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:18:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-13 23:18:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 242. [2019-10-13 23:18:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-10-13 23:18:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 289 transitions. [2019-10-13 23:18:55,349 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 289 transitions. Word has length 56 [2019-10-13 23:18:55,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:55,351 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 289 transitions. [2019-10-13 23:18:55,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 289 transitions. [2019-10-13 23:18:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 23:18:55,362 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:55,362 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:55,363 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:55,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:55,363 INFO L82 PathProgramCache]: Analyzing trace with hash 867884554, now seen corresponding path program 1 times [2019-10-13 23:18:55,363 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:55,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23247558] [2019-10-13 23:18:55,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:18:55,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23247558] [2019-10-13 23:18:55,505 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,505 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:55,505 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487196768] [2019-10-13 23:18:55,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:55,506 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:55,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:55,507 INFO L87 Difference]: Start difference. First operand 242 states and 289 transitions. Second operand 7 states. [2019-10-13 23:18:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:56,184 INFO L93 Difference]: Finished difference Result 624 states and 814 transitions. [2019-10-13 23:18:56,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:18:56,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-13 23:18:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:56,191 INFO L225 Difference]: With dead ends: 624 [2019-10-13 23:18:56,191 INFO L226 Difference]: Without dead ends: 407 [2019-10-13 23:18:56,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:18:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2019-10-13 23:18:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 357. [2019-10-13 23:18:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2019-10-13 23:18:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 426 transitions. [2019-10-13 23:18:56,267 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 426 transitions. Word has length 61 [2019-10-13 23:18:56,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:56,268 INFO L462 AbstractCegarLoop]: Abstraction has 357 states and 426 transitions. [2019-10-13 23:18:56,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:56,268 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 426 transitions. [2019-10-13 23:18:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 23:18:56,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:56,274 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:56,274 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:56,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1410427275, now seen corresponding path program 1 times [2019-10-13 23:18:56,275 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:56,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893090486] [2019-10-13 23:18:56,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:56,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893090486] [2019-10-13 23:18:56,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:56,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:18:56,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48944155] [2019-10-13 23:18:56,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:18:56,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:56,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:18:56,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:18:56,572 INFO L87 Difference]: Start difference. First operand 357 states and 426 transitions. Second operand 12 states. [2019-10-13 23:18:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:57,435 INFO L93 Difference]: Finished difference Result 1089 states and 1322 transitions. [2019-10-13 23:18:57,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:18:57,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2019-10-13 23:18:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:57,441 INFO L225 Difference]: With dead ends: 1089 [2019-10-13 23:18:57,441 INFO L226 Difference]: Without dead ends: 757 [2019-10-13 23:18:57,443 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2019-10-13 23:18:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 735. [2019-10-13 23:18:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2019-10-13 23:18:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 881 transitions. [2019-10-13 23:18:57,522 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 881 transitions. Word has length 78 [2019-10-13 23:18:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:57,522 INFO L462 AbstractCegarLoop]: Abstraction has 735 states and 881 transitions. [2019-10-13 23:18:57,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:18:57,523 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 881 transitions. [2019-10-13 23:18:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:18:57,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:57,525 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:57,526 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:57,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:57,526 INFO L82 PathProgramCache]: Analyzing trace with hash 98116235, now seen corresponding path program 1 times [2019-10-13 23:18:57,526 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:57,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115707164] [2019-10-13 23:18:57,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:57,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:57,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:57,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115707164] [2019-10-13 23:18:57,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:57,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:18:57,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891029323] [2019-10-13 23:18:57,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:18:57,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:57,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:18:57,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:18:57,747 INFO L87 Difference]: Start difference. First operand 735 states and 881 transitions. Second operand 9 states. [2019-10-13 23:18:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:58,906 INFO L93 Difference]: Finished difference Result 2333 states and 2884 transitions. [2019-10-13 23:18:58,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:18:58,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2019-10-13 23:18:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:58,925 INFO L225 Difference]: With dead ends: 2333 [2019-10-13 23:18:58,926 INFO L226 Difference]: Without dead ends: 1782 [2019-10-13 23:18:58,929 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2019-10-13 23:18:59,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1508. [2019-10-13 23:18:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1508 states. [2019-10-13 23:18:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1824 transitions. [2019-10-13 23:18:59,051 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1824 transitions. Word has length 81 [2019-10-13 23:18:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:59,052 INFO L462 AbstractCegarLoop]: Abstraction has 1508 states and 1824 transitions. [2019-10-13 23:18:59,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:18:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1824 transitions. [2019-10-13 23:18:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 23:18:59,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:59,058 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:59,059 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:59,059 INFO L82 PathProgramCache]: Analyzing trace with hash 747468582, now seen corresponding path program 1 times [2019-10-13 23:18:59,059 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:59,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218810425] [2019-10-13 23:18:59,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:59,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:59,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:18:59,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218810425] [2019-10-13 23:18:59,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308428596] [2019-10-13 23:18:59,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:18:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:59,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:18:59,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:18:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:18:59,651 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:19:00,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [133559669] [2019-10-13 23:19:00,158 INFO L162 IcfgInterpreter]: Started Sifa with 100 locations of interest [2019-10-13 23:19:00,159 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:00,166 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:00,179 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:00,179 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:09,986 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:11,873 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:12,027 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:12,170 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:12,465 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:12,899 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,203 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,480 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,726 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,174 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:19:14,431 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,629 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,778 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,933 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,070 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,082 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:19:15,319 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:19:15,436 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:15,587 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:15,744 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:15,860 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,113 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,272 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,376 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,510 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,717 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-13 23:19:16,883 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,037 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,151 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,253 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,382 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,496 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,630 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,767 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,878 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,983 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,109 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,215 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,361 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,490 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,597 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,712 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,837 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,947 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,193 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,410 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,536 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,741 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,872 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,994 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,117 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,247 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,422 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,538 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,675 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,916 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:21,052 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,186 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,305 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,420 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,547 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,694 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,819 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,965 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,216 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:22,335 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:22,473 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,684 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:22,800 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:22,928 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:23,071 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:23,192 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:23,324 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:23,448 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:23,568 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:23,708 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:23,849 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:23,974 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:24,275 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:24,565 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-13 23:19:24,689 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:24,833 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:24,958 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:25,078 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:25,213 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:25,456 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:25,574 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:25,716 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:25,933 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:26,053 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,181 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,302 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,417 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,549 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,788 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:26,908 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:27,045 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,271 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:27,389 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,523 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,730 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:27,855 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:27,984 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:28,218 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 573 [2019-10-13 23:19:28,341 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:28,477 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:28,703 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-13 23:19:28,826 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:28,969 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:29,222 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:29,339 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,465 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,671 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:29,790 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,923 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,037 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,155 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,281 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,514 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:30,631 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,758 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564