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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:18:51,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:18:51,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:18:51,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:18:51,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:18:51,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:18:51,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:18:51,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:18:51,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:18:51,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:18:51,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:18:51,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:18:51,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:18:51,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:18:51,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:18:51,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:18:51,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:18:51,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:18:51,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:18:51,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:18:51,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:18:51,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:18:51,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:18:51,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:18:51,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:18:51,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:18:51,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:18:51,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:18:51,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:18:51,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:18:51,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:18:51,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:18:51,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:18:51,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:18:51,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:18:51,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:18:51,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:18:51,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:18:51,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:18:51,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:18:51,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:18:51,922 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 23:18:51,936 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:18:51,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:18:51,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:18:51,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:18:51,938 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:18:51,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:18:51,939 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:18:51,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:18:51,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:18:51,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:18:51,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:18:51,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:18:51,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:18:51,940 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:18:51,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:18:51,941 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:18:51,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:18:51,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:18:51,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:18:51,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:18:51,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:18:51,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:51,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:18:51,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:18:51,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:18:51,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:18:51,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:18:51,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:18:51,944 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 23:18:52,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:18:52,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:18:52,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:18:52,282 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:18:52,282 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:18:52,283 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-10-13 23:18:52,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d170b34c/603311fc10e24af4b185ff672b2b54f6/FLAG91a90eb31 [2019-10-13 23:18:52,940 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:18:52,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-10-13 23:18:52,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d170b34c/603311fc10e24af4b185ff672b2b54f6/FLAG91a90eb31 [2019-10-13 23:18:53,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d170b34c/603311fc10e24af4b185ff672b2b54f6 [2019-10-13 23:18:53,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:18:53,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:18:53,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:53,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:18:53,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:18:53,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:53,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4626f4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53, skipping insertion in model container [2019-10-13 23:18:53,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:53,249 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:18:53,309 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:18:53,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:53,784 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:18:53,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:53,940 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:18:53,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53 WrapperNode [2019-10-13 23:18:53,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:53,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:18:53,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:18:53,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:18:53,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:53,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:53,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:53,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:54,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:54,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:54,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (1/1) ... [2019-10-13 23:18:54,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:18:54,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:18:54,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:18:54,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:18:54,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (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 23:18:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:18:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:18:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:18:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:18:54,126 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:18:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:18:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:18:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:18:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:18:54,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:18:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:18:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:18:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 23:18:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:18:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:18:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:18:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:18:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:18:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:18:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:18:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:18:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:18:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:18:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:18:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:18:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:18:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:18:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:18:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:18:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:18:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:18:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:18:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:18:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:18:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:18:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:18:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:18:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:18:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:18:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:18:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:18:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:18:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:18:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:18:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:18:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:18:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:18:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:18:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:18:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:18:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:18:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:18:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:18:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:18:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:18:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:18:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:18:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:18:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:18:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:18:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 23:18:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:18:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:18:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:18:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:18:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:18:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:18:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:18:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:18:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:18:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:18:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:18:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:18:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:18:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:18:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:18:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:18:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:18:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:18:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:18:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:18:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:18:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:18:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:18:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:18:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:18:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:18:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:18:55,914 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:18:55,915 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:18:55,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:55 BoogieIcfgContainer [2019-10-13 23:18:55,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:18:55,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:18:55,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:18:55,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:18:55,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:53" (1/3) ... [2019-10-13 23:18:55,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de04f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:55, skipping insertion in model container [2019-10-13 23:18:55,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:53" (2/3) ... [2019-10-13 23:18:55,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de04f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:55, skipping insertion in model container [2019-10-13 23:18:55,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:55" (3/3) ... [2019-10-13 23:18:55,929 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2019-10-13 23:18:55,942 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:18:55,953 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:18:55,967 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:18:55,999 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:18:56,000 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:18:56,000 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:18:56,000 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:18:56,001 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:18:56,001 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:18:56,002 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:18:56,002 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:18:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2019-10-13 23:18:56,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:18:56,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:56,044 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 23:18:56,048 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:56,058 INFO L82 PathProgramCache]: Analyzing trace with hash -113543230, now seen corresponding path program 1 times [2019-10-13 23:18:56,069 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:56,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363576160] [2019-10-13 23:18:56,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:56,419 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 23:18:56,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363576160] [2019-10-13 23:18:56,421 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:56,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:18:56,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062436992] [2019-10-13 23:18:56,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:18:56,427 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:56,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:18:56,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:56,446 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 2 states. [2019-10-13 23:18:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:56,510 INFO L93 Difference]: Finished difference Result 276 states and 337 transitions. [2019-10-13 23:18:56,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:18:56,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:18:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:56,527 INFO L225 Difference]: With dead ends: 276 [2019-10-13 23:18:56,527 INFO L226 Difference]: Without dead ends: 140 [2019-10-13 23:18:56,532 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 23:18:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-10-13 23:18:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-10-13 23:18:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-13 23:18:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-10-13 23:18:56,597 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 52 [2019-10-13 23:18:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:56,598 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-10-13 23:18:56,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:18:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-10-13 23:18:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:18:56,603 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:56,603 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 23:18:56,603 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:56,604 INFO L82 PathProgramCache]: Analyzing trace with hash 187593135, now seen corresponding path program 1 times [2019-10-13 23:18:56,604 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:56,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107984140] [2019-10-13 23:18:56,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:56,767 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 23:18:56,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107984140] [2019-10-13 23:18:56,768 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:56,769 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:18:56,769 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830680444] [2019-10-13 23:18:56,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:18:56,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:56,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:18:56,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:56,774 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 3 states. [2019-10-13 23:18:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:56,822 INFO L93 Difference]: Finished difference Result 224 states and 262 transitions. [2019-10-13 23:18:56,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:18:56,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:18:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:56,830 INFO L225 Difference]: With dead ends: 224 [2019-10-13 23:18:56,831 INFO L226 Difference]: Without dead ends: 132 [2019-10-13 23:18:56,834 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 23:18:56,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-13 23:18:56,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2019-10-13 23:18:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-10-13 23:18:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2019-10-13 23:18:56,877 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 53 [2019-10-13 23:18:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:56,877 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2019-10-13 23:18:56,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:18:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2019-10-13 23:18:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 23:18:56,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:56,882 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] [2019-10-13 23:18:56,883 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:56,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1200875707, now seen corresponding path program 1 times [2019-10-13 23:18:56,887 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:56,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106272074] [2019-10-13 23:18:56,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:57,099 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 23:18:57,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106272074] [2019-10-13 23:18:57,100 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:57,100 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:57,100 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927806985] [2019-10-13 23:18:57,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:57,102 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:57,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:57,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:57,103 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 7 states. [2019-10-13 23:18:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:57,740 INFO L93 Difference]: Finished difference Result 396 states and 476 transitions. [2019-10-13 23:18:57,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:18:57,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-13 23:18:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:57,744 INFO L225 Difference]: With dead ends: 396 [2019-10-13 23:18:57,745 INFO L226 Difference]: Without dead ends: 289 [2019-10-13 23:18:57,746 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 23:18:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2019-10-13 23:18:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 277. [2019-10-13 23:18:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-10-13 23:18:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 332 transitions. [2019-10-13 23:18:57,799 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 332 transitions. Word has length 57 [2019-10-13 23:18:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:57,801 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 332 transitions. [2019-10-13 23:18:57,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 332 transitions. [2019-10-13 23:18:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 23:18:57,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:57,810 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 23:18:57,810 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:57,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:57,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1189207168, now seen corresponding path program 1 times [2019-10-13 23:18:57,811 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:57,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499312635] [2019-10-13 23:18:57,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:57,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:57,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:58,006 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 23:18:58,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499312635] [2019-10-13 23:18:58,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:58,007 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:58,007 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061038285] [2019-10-13 23:18:58,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:58,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:58,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:58,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:58,009 INFO L87 Difference]: Start difference. First operand 277 states and 332 transitions. Second operand 7 states. [2019-10-13 23:18:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:58,832 INFO L93 Difference]: Finished difference Result 714 states and 929 transitions. [2019-10-13 23:18:58,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:18:58,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-13 23:18:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:58,837 INFO L225 Difference]: With dead ends: 714 [2019-10-13 23:18:58,838 INFO L226 Difference]: Without dead ends: 462 [2019-10-13 23:18:58,840 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 23:18:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-10-13 23:18:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 411. [2019-10-13 23:18:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-10-13 23:18:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 490 transitions. [2019-10-13 23:18:58,889 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 490 transitions. Word has length 61 [2019-10-13 23:18:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:58,890 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 490 transitions. [2019-10-13 23:18:58,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 490 transitions. [2019-10-13 23:18:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 23:18:58,892 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:58,892 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:58,893 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:58,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:58,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1473797885, now seen corresponding path program 1 times [2019-10-13 23:18:58,893 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:58,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860042442] [2019-10-13 23:18:58,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:59,175 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 23:18:59,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860042442] [2019-10-13 23:18:59,176 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:59,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:18:59,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560878893] [2019-10-13 23:18:59,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:18:59,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:59,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:18:59,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:18:59,178 INFO L87 Difference]: Start difference. First operand 411 states and 490 transitions. Second operand 12 states. [2019-10-13 23:19:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:00,137 INFO L93 Difference]: Finished difference Result 1226 states and 1483 transitions. [2019-10-13 23:19:00,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:19:00,138 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-10-13 23:19:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:00,144 INFO L225 Difference]: With dead ends: 1226 [2019-10-13 23:19:00,144 INFO L226 Difference]: Without dead ends: 840 [2019-10-13 23:19:00,146 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 23:19:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-10-13 23:19:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 818. [2019-10-13 23:19:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2019-10-13 23:19:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 976 transitions. [2019-10-13 23:19:00,213 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 976 transitions. Word has length 84 [2019-10-13 23:19:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:00,214 INFO L462 AbstractCegarLoop]: Abstraction has 818 states and 976 transitions. [2019-10-13 23:19:00,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:19:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 976 transitions. [2019-10-13 23:19:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 23:19:00,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:00,217 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:00,217 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:00,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:00,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1654303858, now seen corresponding path program 1 times [2019-10-13 23:19:00,218 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:00,218 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051394377] [2019-10-13 23:19:00,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:00,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:00,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:00,418 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 23:19:00,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051394377] [2019-10-13 23:19:00,419 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:00,419 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:19:00,419 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640193492] [2019-10-13 23:19:00,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:19:00,420 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:00,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:19:00,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:19:00,421 INFO L87 Difference]: Start difference. First operand 818 states and 976 transitions. Second operand 9 states. [2019-10-13 23:19:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:01,501 INFO L93 Difference]: Finished difference Result 2592 states and 3181 transitions. [2019-10-13 23:19:01,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:19:01,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-10-13 23:19:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:01,520 INFO L225 Difference]: With dead ends: 2592 [2019-10-13 23:19:01,520 INFO L226 Difference]: Without dead ends: 1971 [2019-10-13 23:19:01,524 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:19:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2019-10-13 23:19:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1681. [2019-10-13 23:19:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1681 states. [2019-10-13 23:19:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2021 transitions. [2019-10-13 23:19:01,700 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2021 transitions. Word has length 87 [2019-10-13 23:19:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:01,700 INFO L462 AbstractCegarLoop]: Abstraction has 1681 states and 2021 transitions. [2019-10-13 23:19:01,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:19:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2021 transitions. [2019-10-13 23:19:01,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 23:19:01,711 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:01,711 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:19:01,712 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1996398240, now seen corresponding path program 1 times [2019-10-13 23:19:01,712 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:01,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990335499] [2019-10-13 23:19:01,713 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:01,713 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:01,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 23:19:01,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990335499] [2019-10-13 23:19:01,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68966560] [2019-10-13 23:19:01,861 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 23:19:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:02,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:19:02,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:19:02,261 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 23:19:02,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1141091848] [2019-10-13 23:19:02,750 INFO L162 IcfgInterpreter]: Started Sifa with 93 locations of interest [2019-10-13 23:19:02,750 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:02,758 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:02,778 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:02,778 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:12,476 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:14,182 WARN L191 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:14,331 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:14,515 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:14,692 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:14,970 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,258 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,626 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,904 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:16,328 WARN L191 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:19:16,556 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:16,783 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:17,005 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:17,269 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:17,491 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:17,501 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:19:17,782 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:19:17,784 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:19:17,920 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,080 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,238 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,358 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,480 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,649 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,773 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,883 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,028 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,310 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-13 23:19:19,450 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,602 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,712 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,959 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,098 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,204 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,329 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,656 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,794 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,898 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:21,029 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,132 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:21,247 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:21,372 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,474 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:21,598 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:21,728 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,930 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:22,055 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:22,259 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:22,422 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:22,526 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:22,757 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:22,895 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,012 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,144 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,400 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:23,515 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,645 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,761 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,877 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:24,004 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:24,142 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,278 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,442 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,568 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,687 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,831 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,949 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,067 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,195 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,320 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:25,452 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:25,591 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:25,712 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:25,833 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:25,965 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:26,107 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:26,228 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:26,508 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:26,821 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:26,967 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:27,107 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:27,227 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:27,347 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:27,480 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:27,764 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:27,880 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,012 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,223 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:28,340 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,470 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,585 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,710 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,850 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,993 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,112 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,314 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,460 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,578 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,706 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,823 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,941 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:30,066 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:30,256 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:30,379 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:30,527 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:19:30,660 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:30,782 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:30,922 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:19:31,146 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:31,259 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,385 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,592 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:31,712 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564