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 -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:39:22,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:39:22,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:39:22,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:39:22,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:39:22,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:39:22,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:39:22,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:39:22,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:39:22,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:39:22,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:39:22,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:39:22,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:39:22,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:39:22,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:39:22,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:39:22,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:39:22,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:39:22,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:39:22,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:39:22,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:39:22,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:39:22,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:39:22,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:39:22,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:39:22,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:39:22,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:39:22,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:39:22,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:39:22,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:39:22,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:39:22,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:39:22,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:39:22,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:39:22,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:39:22,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:39:22,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:39:22,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:39:22,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:39:22,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:39:22,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:39:22,932 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 [2019-10-14 23:39:22,957 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:39:22,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:39:22,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:39:22,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:39:22,960 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:39:22,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:39:22,961 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:39:22,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:39:22,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:39:22,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:39:22,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:39:22,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:39:22,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:39:22,963 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:39:22,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:39:22,964 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:39:22,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:39:22,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:39:22,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:39:22,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:39:22,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:39:22,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:39:22,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:39:22,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:39:22,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:39:22,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:39:22,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:39:22,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:39:22,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:39:23,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:39:23,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:39:23,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:39:23,266 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:39:23,266 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:39:23,267 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c [2019-10-14 23:39:23,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe9be000/6dd34c2ec3cd4196985bcba9319a76b6/FLAG648f8c097 [2019-10-14 23:39:23,891 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:39:23,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c [2019-10-14 23:39:23,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe9be000/6dd34c2ec3cd4196985bcba9319a76b6/FLAG648f8c097 [2019-10-14 23:39:24,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfe9be000/6dd34c2ec3cd4196985bcba9319a76b6 [2019-10-14 23:39:24,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:39:24,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:39:24,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:24,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:39:24,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:39:24,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,209 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 14.10 11:39:24, skipping insertion in model container [2019-10-14 23:39:24,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,217 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:39:24,281 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:39:24,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:24,735 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:39:24,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:24,888 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:39:24,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24 WrapperNode [2019-10-14 23:39:24,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:24,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:39:24,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:39:24,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:39:24,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (1/1) ... [2019-10-14 23:39:24,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:39:24,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:39:24,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:39:24,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:39:24,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (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 [2019-10-14 23:39:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:39:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:39:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:39:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:39:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:39:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:39:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:39:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:39:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:39:25,043 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:39:25,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:39:25,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:25,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:39:25,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:39:25,047 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:25,047 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:39:25,047 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:39:25,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:39:25,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:39:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:39:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:39:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:39:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:39:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:39:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:39:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:39:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:39:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:39:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:39:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:39:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:39:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:39:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:39:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:39:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:39:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:39:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:39:25,052 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:39:25,052 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:39:25,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:39:25,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:39:25,052 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:39:25,052 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:39:25,053 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:39:25,053 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:39:25,053 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:39:25,053 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:39:25,053 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:39:25,053 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:39:25,053 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:39:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:39:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:39:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:39:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:39:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:39:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:39:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:39:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:39:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:39:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:39:25,056 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:39:25,056 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:39:25,056 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:39:25,056 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:39:25,057 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:39:25,057 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:39:25,057 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:39:25,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:39:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:39:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:39:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:39:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:39:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:39:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:39:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:39:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:39:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:39:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:39:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:39:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:39:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:39:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:39:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:39:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:39:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:39:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:39:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:39:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:39:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:39:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:39:26,107 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:39:26,108 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:39:26,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:26 BoogieIcfgContainer [2019-10-14 23:39:26,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:39:26,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:39:26,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:39:26,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:39:26,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:39:24" (1/3) ... [2019-10-14 23:39:26,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e5ff95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:26, skipping insertion in model container [2019-10-14 23:39:26,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:24" (2/3) ... [2019-10-14 23:39:26,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e5ff95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:26, skipping insertion in model container [2019-10-14 23:39:26,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:26" (3/3) ... [2019-10-14 23:39:26,118 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product64.cil.c [2019-10-14 23:39:26,128 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:39:26,137 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:39:26,148 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:39:26,180 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:39:26,180 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:39:26,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:39:26,181 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:39:26,181 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:39:26,182 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:39:26,182 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:39:26,183 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:39:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2019-10-14 23:39:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:39:26,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:26,224 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:26,226 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash 22774911, now seen corresponding path program 1 times [2019-10-14 23:39:26,241 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:26,242 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487347302] [2019-10-14 23:39:26,242 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:26,242 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:26,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,925 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:27,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487347302] [2019-10-14 23:39:27,047 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:27,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:39:27,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470747450] [2019-10-14 23:39:27,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:39:27,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:27,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:39:27,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:39:27,073 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 3 states. [2019-10-14 23:39:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:28,453 INFO L93 Difference]: Finished difference Result 374 states and 484 transitions. [2019-10-14 23:39:28,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:39:28,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:39:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:28,471 INFO L225 Difference]: With dead ends: 374 [2019-10-14 23:39:28,471 INFO L226 Difference]: Without dead ends: 202 [2019-10-14 23:39:28,476 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:39:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-10-14 23:39:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 163. [2019-10-14 23:39:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-10-14 23:39:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2019-10-14 23:39:28,599 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 46 [2019-10-14 23:39:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:28,599 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2019-10-14 23:39:28,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:39:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2019-10-14 23:39:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:39:28,604 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:28,604 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:28,604 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:28,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:28,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1731168874, now seen corresponding path program 1 times [2019-10-14 23:39:28,605 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:28,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339609047] [2019-10-14 23:39:28,606 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:28,606 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:28,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:28,974 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:29,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339609047] [2019-10-14 23:39:29,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:29,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:39:29,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164383307] [2019-10-14 23:39:29,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:39:29,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:29,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:39:29,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:39:29,015 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 4 states. [2019-10-14 23:39:29,494 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:30,666 INFO L93 Difference]: Finished difference Result 297 states and 363 transitions. [2019-10-14 23:39:30,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:30,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:39:30,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:30,672 INFO L225 Difference]: With dead ends: 297 [2019-10-14 23:39:30,672 INFO L226 Difference]: Without dead ends: 186 [2019-10-14 23:39:30,674 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:39:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-14 23:39:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 154. [2019-10-14 23:39:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-10-14 23:39:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2019-10-14 23:39:30,717 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 47 [2019-10-14 23:39:30,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:30,718 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2019-10-14 23:39:30,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:39:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2019-10-14 23:39:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:39:30,721 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:30,721 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:30,721 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:30,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:30,721 INFO L82 PathProgramCache]: Analyzing trace with hash -976432514, now seen corresponding path program 1 times [2019-10-14 23:39:30,722 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:30,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657336363] [2019-10-14 23:39:30,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:30,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:30,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:31,070 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:31,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657336363] [2019-10-14 23:39:31,178 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:31,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:39:31,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649623076] [2019-10-14 23:39:31,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:31,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:31,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:31,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:39:31,180 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand 8 states. [2019-10-14 23:39:31,686 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:32,076 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:32,398 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:32,659 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:33,615 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:36,453 INFO L93 Difference]: Finished difference Result 525 states and 650 transitions. [2019-10-14 23:39:36,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:39:36,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 23:39:36,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:36,460 INFO L225 Difference]: With dead ends: 525 [2019-10-14 23:39:36,460 INFO L226 Difference]: Without dead ends: 395 [2019-10-14 23:39:36,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:39:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-10-14 23:39:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 322. [2019-10-14 23:39:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-10-14 23:39:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 390 transitions. [2019-10-14 23:39:36,547 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 390 transitions. Word has length 52 [2019-10-14 23:39:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:36,548 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 390 transitions. [2019-10-14 23:39:36,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 390 transitions. [2019-10-14 23:39:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:39:36,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:36,552 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:36,552 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:36,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:36,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1952402222, now seen corresponding path program 1 times [2019-10-14 23:39:36,553 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:36,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659428641] [2019-10-14 23:39:36,553 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:36,553 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:36,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,931 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:37,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659428641] [2019-10-14 23:39:37,072 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:37,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:39:37,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689618989] [2019-10-14 23:39:37,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:39:37,073 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:37,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:39:37,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:37,074 INFO L87 Difference]: Start difference. First operand 322 states and 390 transitions. Second operand 12 states. [2019-10-14 23:39:37,719 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:38,100 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:38,422 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:38,713 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:39,382 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:40,387 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:40,813 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:41,190 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:41,518 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:41,891 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:42,313 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:42,747 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:43,210 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:45,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:45,822 INFO L93 Difference]: Finished difference Result 1325 states and 1806 transitions. [2019-10-14 23:39:45,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:45,823 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-14 23:39:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:45,831 INFO L225 Difference]: With dead ends: 1325 [2019-10-14 23:39:45,831 INFO L226 Difference]: Without dead ends: 1027 [2019-10-14 23:39:45,834 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-14 23:39:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 922. [2019-10-14 23:39:46,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2019-10-14 23:39:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1176 transitions. [2019-10-14 23:39:46,047 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1176 transitions. Word has length 57 [2019-10-14 23:39:46,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:46,048 INFO L462 AbstractCegarLoop]: Abstraction has 922 states and 1176 transitions. [2019-10-14 23:39:46,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1176 transitions. [2019-10-14 23:39:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:39:46,052 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:46,053 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:46,053 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:46,053 INFO L82 PathProgramCache]: Analyzing trace with hash 474058772, now seen corresponding path program 1 times [2019-10-14 23:39:46,054 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:46,054 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117232670] [2019-10-14 23:39:46,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:46,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:46,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,318 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:46,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117232670] [2019-10-14 23:39:46,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:46,407 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:39:46,407 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402957925] [2019-10-14 23:39:46,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:46,408 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:46,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:46,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:39:46,409 INFO L87 Difference]: Start difference. First operand 922 states and 1176 transitions. Second operand 6 states. [2019-10-14 23:39:46,806 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:49,260 INFO L93 Difference]: Finished difference Result 2205 states and 2989 transitions. [2019-10-14 23:39:49,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:39:49,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-14 23:39:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:49,272 INFO L225 Difference]: With dead ends: 2205 [2019-10-14 23:39:49,272 INFO L226 Difference]: Without dead ends: 1307 [2019-10-14 23:39:49,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2019-10-14 23:39:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1216. [2019-10-14 23:39:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2019-10-14 23:39:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1510 transitions. [2019-10-14 23:39:49,559 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1510 transitions. Word has length 61 [2019-10-14 23:39:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:49,559 INFO L462 AbstractCegarLoop]: Abstraction has 1216 states and 1510 transitions. [2019-10-14 23:39:49,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:49,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1510 transitions. [2019-10-14 23:39:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:39:49,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:49,562 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:49,563 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:49,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:49,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1364424505, now seen corresponding path program 1 times [2019-10-14 23:39:49,563 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:49,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777494229] [2019-10-14 23:39:49,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:49,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:49,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,893 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:39:50,052 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777494229] [2019-10-14 23:39:50,052 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015555299] [2019-10-14 23:39:50,052 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 [2019-10-14 23:39:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:50,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:39:50,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:39:50,442 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:50,443 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-14 23:39:50,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738352395] [2019-10-14 23:39:50,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 23:39:50,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:50,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 23:39:50,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:50,445 INFO L87 Difference]: Start difference. First operand 1216 states and 1510 transitions. Second operand 15 states. [2019-10-14 23:39:51,112 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:51,921 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:52,832 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:54,649 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:55,153 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:56,616 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:56,950 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:57,445 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:58,497 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:58,952 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:59,290 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:59,653 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:00,101 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:00,459 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:01,477 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:40:01,856 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:40:02,140 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:02,557 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:03,159 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:03,423 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186