/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:23:05,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:23:05,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:23:05,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:23:05,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:23:05,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:23:05,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:23:05,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:23:05,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:23:05,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:23:05,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:23:05,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:23:05,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:23:05,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:23:05,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:23:05,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:23:05,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:23:05,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:23:05,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:23:05,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:23:05,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:23:05,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:23:05,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:23:05,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:23:05,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:23:05,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:23:05,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:23:05,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:23:05,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:23:05,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:23:05,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:23:05,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:23:05,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:23:05,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:23:05,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:23:05,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:23:05,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:23:05,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:23:05,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:23:05,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:23:05,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:23:05,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:23:05,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:23:05,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:23:05,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:23:05,366 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:23:05,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:23:05,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:23:05,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:23:05,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:23:05,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:23:05,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:23:05,368 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:23:05,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:23:05,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:23:05,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:23:05,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:23:05,369 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:23:05,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:23:05,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:23:05,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:23:05,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:23:05,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:23:05,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:23:05,371 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:23:05,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:23:05,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:23:05,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:23:05,821 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:23:05,822 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:23:05,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2021-02-23 16:23:05,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09cdf7f46/f2df69da5c9f4a2f9969aae19c1f7d9f/FLAG2503d34d1 [2021-02-23 16:23:06,678 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:23:06,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2021-02-23 16:23:06,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09cdf7f46/f2df69da5c9f4a2f9969aae19c1f7d9f/FLAG2503d34d1 [2021-02-23 16:23:06,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09cdf7f46/f2df69da5c9f4a2f9969aae19c1f7d9f [2021-02-23 16:23:06,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:23:06,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:23:06,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:23:06,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:23:06,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:23:06,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:23:06" (1/1) ... [2021-02-23 16:23:06,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fc809c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:06, skipping insertion in model container [2021-02-23 16:23:06,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:23:06" (1/1) ... [2021-02-23 16:23:06,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:23:07,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:23:07,260 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c[1281,1294] [2021-02-23 16:23:07,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:23:07,424 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:23:07,439 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c[1281,1294] [2021-02-23 16:23:07,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:23:07,613 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:23:07,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07 WrapperNode [2021-02-23 16:23:07,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:23:07,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:23:07,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:23:07,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:23:07,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (1/1) ... [2021-02-23 16:23:07,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (1/1) ... [2021-02-23 16:23:07,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (1/1) ... [2021-02-23 16:23:07,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (1/1) ... [2021-02-23 16:23:07,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (1/1) ... [2021-02-23 16:23:07,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (1/1) ... [2021-02-23 16:23:07,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (1/1) ... [2021-02-23 16:23:07,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:23:07,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:23:07,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:23:07,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:23:07,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (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 [2021-02-23 16:23:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:23:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:23:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:23:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:23:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:23:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:23:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:23:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:23:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:23:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:23:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:23:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:23:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:23:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:23:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:23:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:23:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:23:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:23:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:23:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:23:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:23:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:23:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:23:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:23:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:23:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:23:07,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:23:07,878 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:23:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:23:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:23:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:23:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:23:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:23:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:23:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:23:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:23:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:23:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:23:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:23:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:23:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:23:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:23:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:23:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:23:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:23:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:23:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:23:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:23:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:23:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:23:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:23:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:23:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:23:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:23:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:23:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:23:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:23:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:23:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:23:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:23:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:23:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:23:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:23:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:23:09,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:23:09,072 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:23:09,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:23:09 BoogieIcfgContainer [2021-02-23 16:23:09,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:23:09,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:23:09,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:23:09,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:23:09,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:23:06" (1/3) ... [2021-02-23 16:23:09,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0274ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:23:09, skipping insertion in model container [2021-02-23 16:23:09,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:23:07" (2/3) ... [2021-02-23 16:23:09,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0274ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:23:09, skipping insertion in model container [2021-02-23 16:23:09,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:23:09" (3/3) ... [2021-02-23 16:23:09,087 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product16.cil.c [2021-02-23 16:23:09,094 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:23:09,100 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:23:09,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:23:09,150 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:23:09,151 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:23:09,151 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:23:09,151 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:23:09,151 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:23:09,151 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:23:09,151 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:23:09,152 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:23:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states. [2021-02-23 16:23:09,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:23:09,194 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:09,195 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:09,196 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1787509794, now seen corresponding path program 1 times [2021-02-23 16:23:09,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:09,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497218332] [2021-02-23 16:23:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:09,288 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:09,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:09,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:09,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:09,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:09,972 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:09,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:10,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:10,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:10,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:10,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:10,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:10,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:10,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:10,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:10,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:10,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:10,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:10,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:10,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:10,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:23:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:10,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:10,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:23:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:10,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:10,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:23:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:10,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:10,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:10,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497218332] [2021-02-23 16:23:10,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:10,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:23:10,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799112981] [2021-02-23 16:23:10,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:23:10,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:10,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:23:10,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:23:10,237 INFO L87 Difference]: Start difference. First operand 301 states. Second operand 3 states. [2021-02-23 16:23:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:11,845 INFO L93 Difference]: Finished difference Result 442 states and 530 transitions. [2021-02-23 16:23:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:23:11,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:23:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:11,874 INFO L225 Difference]: With dead ends: 442 [2021-02-23 16:23:11,874 INFO L226 Difference]: Without dead ends: 281 [2021-02-23 16:23:11,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:23:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-23 16:23:12,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2021-02-23 16:23:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-23 16:23:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 259 transitions. [2021-02-23 16:23:12,066 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 259 transitions. Word has length 158 [2021-02-23 16:23:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:12,068 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 259 transitions. [2021-02-23 16:23:12,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:23:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 259 transitions. [2021-02-23 16:23:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:23:12,073 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:12,074 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:12,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:23:12,074 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1681763398, now seen corresponding path program 1 times [2021-02-23 16:23:12,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:12,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166849153] [2021-02-23 16:23:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:12,081 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:12,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,582 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:23:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:23:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:23:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:12,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:12,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:12,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166849153] [2021-02-23 16:23:12,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:12,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:23:12,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640174436] [2021-02-23 16:23:12,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:23:12,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:12,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:23:12,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:23:12,738 INFO L87 Difference]: Start difference. First operand 239 states and 259 transitions. Second operand 4 states. [2021-02-23 16:23:13,507 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:23:14,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:14,387 INFO L93 Difference]: Finished difference Result 348 states and 392 transitions. [2021-02-23 16:23:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:23:14,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:23:14,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:14,398 INFO L225 Difference]: With dead ends: 348 [2021-02-23 16:23:14,398 INFO L226 Difference]: Without dead ends: 264 [2021-02-23 16:23:14,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:23:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-23 16:23:14,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2021-02-23 16:23:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 16:23:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 246 transitions. [2021-02-23 16:23:14,507 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 246 transitions. Word has length 159 [2021-02-23 16:23:14,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:14,507 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 246 transitions. [2021-02-23 16:23:14,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:23:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 246 transitions. [2021-02-23 16:23:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:23:14,511 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:14,511 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:14,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:23:14,511 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:14,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:14,512 INFO L82 PathProgramCache]: Analyzing trace with hash -890344774, now seen corresponding path program 1 times [2021-02-23 16:23:14,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:14,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664877690] [2021-02-23 16:23:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:14,516 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:14,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:14,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:14,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:14,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:14,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:14,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:14,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:14,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:14,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:14,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:23:14,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:14,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:14,997 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:23:15,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:23:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:23:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:15,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:23:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:23:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:23:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:15,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:15,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:15,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664877690] [2021-02-23 16:23:15,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:15,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:23:15,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163453564] [2021-02-23 16:23:15,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:23:15,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:15,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:23:15,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:23:15,168 INFO L87 Difference]: Start difference. First operand 229 states and 246 transitions. Second operand 10 states. [2021-02-23 16:23:15,750 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:16,192 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:23:16,571 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:23:16,952 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:17,327 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:23:17,650 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:18,697 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:23:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:20,766 INFO L93 Difference]: Finished difference Result 619 states and 724 transitions. [2021-02-23 16:23:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:23:20,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:23:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:20,773 INFO L225 Difference]: With dead ends: 619 [2021-02-23 16:23:20,773 INFO L226 Difference]: Without dead ends: 505 [2021-02-23 16:23:20,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:23:20,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-02-23 16:23:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 414. [2021-02-23 16:23:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2021-02-23 16:23:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 463 transitions. [2021-02-23 16:23:20,960 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 463 transitions. Word has length 172 [2021-02-23 16:23:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:20,960 INFO L480 AbstractCegarLoop]: Abstraction has 414 states and 463 transitions. [2021-02-23 16:23:20,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:23:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 463 transitions. [2021-02-23 16:23:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:23:20,964 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:20,964 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:20,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:23:20,965 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash -300762435, now seen corresponding path program 1 times [2021-02-23 16:23:20,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:20,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280911048] [2021-02-23 16:23:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:20,969 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,435 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:21,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:23:21,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:23:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:23:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-23 16:23:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:21,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-23 16:23:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:21,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:21,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:21,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280911048] [2021-02-23 16:23:21,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:21,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:23:21,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965819648] [2021-02-23 16:23:21,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:23:21,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:21,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:23:21,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:23:21,675 INFO L87 Difference]: Start difference. First operand 414 states and 463 transitions. Second operand 9 states. [2021-02-23 16:23:22,240 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:24,094 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:24,473 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:23:24,878 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:25,284 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:25,633 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:23:26,001 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:26,356 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:23:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:27,225 INFO L93 Difference]: Finished difference Result 1090 states and 1320 transitions. [2021-02-23 16:23:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:23:27,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-23 16:23:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:27,233 INFO L225 Difference]: With dead ends: 1090 [2021-02-23 16:23:27,233 INFO L226 Difference]: Without dead ends: 791 [2021-02-23 16:23:27,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:23:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-02-23 16:23:27,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 692. [2021-02-23 16:23:27,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2021-02-23 16:23:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 798 transitions. [2021-02-23 16:23:27,566 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 798 transitions. Word has length 177 [2021-02-23 16:23:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:27,567 INFO L480 AbstractCegarLoop]: Abstraction has 692 states and 798 transitions. [2021-02-23 16:23:27,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:23:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 798 transitions. [2021-02-23 16:23:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:23:27,572 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:27,572 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:27,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:23:27,573 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1111398584, now seen corresponding path program 1 times [2021-02-23 16:23:27,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:27,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624921999] [2021-02-23 16:23:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:27,577 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:23:27,651 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:23:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:23:27,723 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:23:27,911 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:23:27,911 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:23:27,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:23:27,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:23:27 BoogieIcfgContainer [2021-02-23 16:23:27,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:23:27,937 INFO L168 Benchmark]: Toolchain (without parser) took 21023.13 ms. Allocated memory was 151.0 MB in the beginning and 468.7 MB in the end (delta: 317.7 MB). Free memory was 108.9 MB in the beginning and 312.6 MB in the end (delta: -203.7 MB). Peak memory consumption was 115.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:27,937 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:23:27,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.46 ms. Allocated memory is still 151.0 MB. Free memory was 134.8 MB in the beginning and 133.9 MB in the end (delta: 947.6 kB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:27,938 INFO L168 Benchmark]: Boogie Preprocessor took 154.30 ms. Allocated memory is still 151.0 MB. Free memory was 133.9 MB in the beginning and 130.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:27,939 INFO L168 Benchmark]: RCFGBuilder took 1306.76 ms. Allocated memory is still 151.0 MB. Free memory was 130.3 MB in the beginning and 85.5 MB in the end (delta: 44.7 MB). Peak memory consumption was 61.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:27,939 INFO L168 Benchmark]: TraceAbstraction took 18855.45 ms. Allocated memory was 151.0 MB in the beginning and 468.7 MB in the end (delta: 317.7 MB). Free memory was 85.5 MB in the beginning and 312.6 MB in the end (delta: -227.1 MB). Peak memory consumption was 91.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:27,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 660.46 ms. Allocated memory is still 151.0 MB. Free memory was 134.8 MB in the beginning and 133.9 MB in the end (delta: 947.6 kB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 154.30 ms. Allocated memory is still 151.0 MB. Free memory was 133.9 MB in the beginning and 130.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1306.76 ms. Allocated memory is still 151.0 MB. Free memory was 130.3 MB in the beginning and 85.5 MB in the end (delta: 44.7 MB). Peak memory consumption was 61.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18855.45 ms. Allocated memory was 151.0 MB in the beginning and 468.7 MB in the end (delta: 317.7 MB). Free memory was 85.5 MB in the beginning and 312.6 MB in the end (delta: -227.1 MB). Peak memory consumption was 91.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L324] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L598] int pumpRunning = 0; [L599] int systemActive = 1; [L808] int waterLevel = 1; [L809] int methaneLevelCritical = 0; [L132] int retValue_acc ; [L133] int tmp ; [L137] FCALL select_helpers() [L138] FCALL select_features() [L139] CALL, EXPR valid_product() [L798] int retValue_acc ; [L801] retValue_acc = 1 [L802] return (retValue_acc); [L139] RET, EXPR valid_product() [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) [L143] FCALL setup() [L144] CALL runTest() [L123] CALL test() [L524] int splverifierCounter ; [L525] int tmp ; [L526] int tmp___0 ; [L527] int tmp___1 ; [L528] int tmp___2 ; [L531] splverifierCounter = 0 [L533] COND TRUE 1 [L535] COND TRUE splverifierCounter < 4 [L541] tmp = __VERIFIER_nondet_int() [L543] COND TRUE \read(tmp) [L545] CALL waterRise() [L826] COND TRUE waterLevel < 2 [L827] waterLevel = waterLevel + 1 [L545] RET waterRise() [L551] tmp___0 = __VERIFIER_nondet_int() [L553] COND FALSE !(\read(tmp___0)) [L561] tmp___2 = __VERIFIER_nondet_int() [L563] COND FALSE !(\read(tmp___2)) [L569] tmp___1 = __VERIFIER_nondet_int() [L571] COND TRUE \read(tmp___1) [L573] CALL stopSystem() [L752] COND FALSE !(\read(pumpRunning)) [L759] systemActive = 0 [L573] RET stopSystem() [L580] CALL timeShift() [L606] COND FALSE !(\read(pumpRunning)) [L613] COND FALSE !(\read(systemActive)) [L621] CALL __utac_acc__Specification3_spec__1() [L889] int tmp ; [L890] int tmp___0 ; [L891] int tmp___1 ; [L895] CALL, EXPR isMethaneLevelCritical() [L847] int retValue_acc ; [L850] retValue_acc = methaneLevelCritical [L851] return (retValue_acc); [L895] RET, EXPR isMethaneLevelCritical() [L895] tmp = isMethaneLevelCritical() [L897] COND FALSE !(\read(tmp)) [L901] CALL, EXPR getWaterLevel() [L879] int retValue_acc ; [L882] retValue_acc = waterLevel [L883] return (retValue_acc); [L901] RET, EXPR getWaterLevel() [L901] tmp___0 = getWaterLevel() [L903] COND TRUE tmp___0 == 2 [L905] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); [L905] RET, EXPR isPumpRunning() [L905] tmp___1 = isPumpRunning() [L907] COND FALSE !(\read(tmp___1)) [L911] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 930 SDtfs, 1285 SDslu, 1568 SDs, 0 SdLazy, 2807 SolverSat, 479 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=692occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 267 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...