./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1aa77a42d44aaff76210b78cb1336cb97af7d944 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:14:59,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:14:59,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:14:59,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:14:59,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:14:59,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:14:59,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:14:59,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:14:59,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:14:59,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:14:59,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:14:59,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:14:59,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:14:59,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:14:59,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:14:59,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:14:59,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:14:59,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:14:59,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:14:59,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:14:59,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:14:59,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:14:59,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:14:59,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:14:59,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:14:59,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:14:59,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:14:59,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:14:59,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:14:59,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:14:59,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:14:59,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:14:59,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:14:59,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:14:59,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:14:59,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:14:59,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:14:59,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:14:59,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:14:59,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:14:59,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:14:59,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:14:59,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:14:59,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:14:59,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:14:59,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:14:59,291 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:14:59,292 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:14:59,292 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:14:59,292 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:14:59,292 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:14:59,292 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:14:59,292 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:14:59,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:14:59,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:14:59,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:14:59,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:14:59,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:14:59,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:14:59,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:14:59,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:14:59,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:14:59,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:14:59,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:14:59,295 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:14:59,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:14:59,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:14:59,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:14:59,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:14:59,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:14:59,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:14:59,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:14:59,297 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:14:59,297 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1aa77a42d44aaff76210b78cb1336cb97af7d944 [2021-07-06 20:14:59,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:14:59,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:14:59,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:14:59,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:14:59,624 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:14:59,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c [2021-07-06 20:14:59,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1762d29/43562ed11ddf4fd98bf147df735d4e93/FLAG81e1b5ed7 [2021-07-06 20:15:00,132 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:15:00,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c [2021-07-06 20:15:00,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1762d29/43562ed11ddf4fd98bf147df735d4e93/FLAG81e1b5ed7 [2021-07-06 20:15:00,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1762d29/43562ed11ddf4fd98bf147df735d4e93 [2021-07-06 20:15:00,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:15:00,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:15:00,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:15:00,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:15:00,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:15:00,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:15:00" (1/1) ... [2021-07-06 20:15:00,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ec77f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:00, skipping insertion in model container [2021-07-06 20:15:00,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:15:00" (1/1) ... [2021-07-06 20:15:00,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:15:00,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:15:00,841 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c[1281,1294] [2021-07-06 20:15:01,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:15:01,047 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:15:01,063 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c[1281,1294] [2021-07-06 20:15:01,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:15:01,160 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:15:01,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01 WrapperNode [2021-07-06 20:15:01,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:15:01,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:15:01,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:15:01,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:15:01,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:15:01,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:15:01,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:15:01,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:15:01,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:15:01,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:15:01,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:15:01,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:15:01,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (1/1) ... [2021-07-06 20:15:01,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:15:01,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:15:01,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:15:01,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:15:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:15:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:15:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:15:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:15:02,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:15:02,130 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-07-06 20:15:02,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:15:02 BoogieIcfgContainer [2021-07-06 20:15:02,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:15:02,132 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:15:02,132 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:15:02,134 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:15:02,135 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:15:02,136 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:15:00" (1/3) ... [2021-07-06 20:15:02,137 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13a4e25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:15:02, skipping insertion in model container [2021-07-06 20:15:02,137 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:15:02,137 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:15:01" (2/3) ... [2021-07-06 20:15:02,137 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13a4e25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:15:02, skipping insertion in model container [2021-07-06 20:15:02,137 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:15:02,137 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:15:02" (3/3) ... [2021-07-06 20:15:02,139 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product58.cil.c [2021-07-06 20:15:02,185 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:15:02,185 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:15:02,185 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:15:02,185 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:15:02,185 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:15:02,185 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:15:02,186 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:15:02,186 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:15:02,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:15:02,227 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-07-06 20:15:02,227 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:15:02,227 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:15:02,233 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:15:02,234 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:15:02,234 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:15:02,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:15:02,242 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-07-06 20:15:02,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:15:02,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:15:02,247 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:15:02,247 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:15:02,251 INFO L791 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 5#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 19#L607true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 22#L615true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 100#L250true assume 0 != main_~tmp~0; 83#L223true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 127#L500-1true [2021-07-06 20:15:02,251 INFO L793 eck$LassoCheckResult]: Loop: 127#L500-1true assume !false; 46#L529true assume test_~splverifierCounter~0 < 4; 8#L530true test_~tmp~7 := test_#t~nondet42;havoc test_#t~nondet42; 24#L538true assume !(0 != test_~tmp~7); 14#L538-1true test_~tmp___0~3 := test_#t~nondet43;havoc test_#t~nondet43; 47#L548true assume !(0 != test_~tmp___0~3); 49#L548-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 119#L558true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 125#L566-2true assume !(0 != ~pumpRunning~0); 35#L276true assume !(0 != ~systemActive~0); 103#L283true havoc __utac_acc__Specification1_spec__1_#t~ret40, __utac_acc__Specification1_spec__1_#t~ret41, __utac_acc__Specification1_spec__1_~tmp~6, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~6;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 77#L102-2true __utac_acc__Specification1_spec__1_#t~ret40 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~6 := __utac_acc__Specification1_spec__1_#t~ret40;havoc __utac_acc__Specification1_spec__1_#t~ret40; 126#L500true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6); 127#L500-1true [2021-07-06 20:15:02,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:15:02,256 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:15:02,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:15:02,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477329997] [2021-07-06 20:15:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:15:02,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:15:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:02,455 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:02,532 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:02,566 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:15:02,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:15:02,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1678143613, now seen corresponding path program 1 times [2021-07-06 20:15:02,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:15:02,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645980301] [2021-07-06 20:15:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:15:02,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:15:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:15:02,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:15:02,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:15:02,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:15:02,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:15:02,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:15:02,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:15:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:15:02,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:15:02,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645980301] [2021-07-06 20:15:02,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645980301] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:15:02,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:15:02,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:15:02,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717547209] [2021-07-06 20:15:02,654 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:15:02,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:15:02,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:15:02,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:15:02,667 INFO L87 Difference]: Start difference. First operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:15:02,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:15:02,700 INFO L93 Difference]: Finished difference Result 132 states and 188 transitions. [2021-07-06 20:15:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:15:02,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 188 transitions. [2021-07-06 20:15:02,706 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-07-06 20:15:02,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 125 states and 180 transitions. [2021-07-06 20:15:02,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2021-07-06 20:15:02,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 125 [2021-07-06 20:15:02,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 180 transitions. [2021-07-06 20:15:02,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:15:02,713 INFO L681 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-07-06 20:15:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 180 transitions. [2021-07-06 20:15:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-07-06 20:15:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.44) internal successors, (180), 124 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:15:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2021-07-06 20:15:02,740 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-07-06 20:15:02,740 INFO L587 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-07-06 20:15:02,740 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:15:02,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 180 transitions. [2021-07-06 20:15:02,742 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-07-06 20:15:02,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:15:02,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:15:02,743 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:15:02,743 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:15:02,743 INFO L791 eck$LassoCheckResult]: Stem: 386#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 277#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 278#L607 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 300#L615 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 306#L250 assume 0 != main_~tmp~0; 381#L223 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 352#L500-1 [2021-07-06 20:15:02,744 INFO L793 eck$LassoCheckResult]: Loop: 352#L500-1 assume !false; 347#L529 assume test_~splverifierCounter~0 < 4; 283#L530 test_~tmp~7 := test_#t~nondet42;havoc test_#t~nondet42; 284#L538 assume !(0 != test_~tmp~7); 294#L538-1 test_~tmp___0~3 := test_#t~nondet43;havoc test_#t~nondet43; 295#L548 assume !(0 != test_~tmp___0~3); 334#L548-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 349#L558 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 276#L566-2 assume !(0 != ~pumpRunning~0); 286#L276 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 310#L334 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret18, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 311#L308-1 assume !(0 == ~pumpRunning~0); 314#L283 havoc __utac_acc__Specification1_spec__1_#t~ret40, __utac_acc__Specification1_spec__1_#t~ret41, __utac_acc__Specification1_spec__1_~tmp~6, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~6;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 375#L102-2 __utac_acc__Specification1_spec__1_#t~ret40 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~6 := __utac_acc__Specification1_spec__1_#t~ret40;havoc __utac_acc__Specification1_spec__1_#t~ret40; 376#L500 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6); 352#L500-1 [2021-07-06 20:15:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:15:02,744 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:15:02,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:15:02,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930077908] [2021-07-06 20:15:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:15:02,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:15:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:02,786 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:02,830 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:02,843 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:15:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:15:02,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1068993908, now seen corresponding path program 1 times [2021-07-06 20:15:02,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:15:02,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753056073] [2021-07-06 20:15:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:15:02,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:15:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:15:02,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:15:02,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:15:02,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:15:02,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:15:02,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:15:02,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:15:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:15:02,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:15:02,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753056073] [2021-07-06 20:15:02,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753056073] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:15:02,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:15:02,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:15:02,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006833483] [2021-07-06 20:15:02,881 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:15:02,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:15:02,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:15:02,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:15:02,883 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:15:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:15:02,984 INFO L93 Difference]: Finished difference Result 166 states and 228 transitions. [2021-07-06 20:15:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:15:02,985 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 166 states and 228 transitions. [2021-07-06 20:15:02,987 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-07-06 20:15:02,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 166 states to 166 states and 228 transitions. [2021-07-06 20:15:02,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 166 [2021-07-06 20:15:02,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 166 [2021-07-06 20:15:02,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 166 states and 228 transitions. [2021-07-06 20:15:03,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:15:03,000 INFO L681 BuchiCegarLoop]: Abstraction has 166 states and 228 transitions. [2021-07-06 20:15:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states and 228 transitions. [2021-07-06 20:15:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-07-06 20:15:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 165 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:15:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 228 transitions. [2021-07-06 20:15:03,017 INFO L704 BuchiCegarLoop]: Abstraction has 166 states and 228 transitions. [2021-07-06 20:15:03,018 INFO L587 BuchiCegarLoop]: Abstraction has 166 states and 228 transitions. [2021-07-06 20:15:03,018 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:15:03,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 166 states and 228 transitions. [2021-07-06 20:15:03,019 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-07-06 20:15:03,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:15:03,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:15:03,021 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:15:03,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:15:03,022 INFO L791 eck$LassoCheckResult]: Stem: 685#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 574#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 575#L607 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 597#L615 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 603#L250 assume 0 != main_~tmp~0; 681#L223 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 646#L500-1 [2021-07-06 20:15:03,022 INFO L793 eck$LassoCheckResult]: Loop: 646#L500-1 assume !false; 641#L529 assume test_~splverifierCounter~0 < 4; 582#L530 test_~tmp~7 := test_#t~nondet42;havoc test_#t~nondet42; 583#L538 assume !(0 != test_~tmp~7); 591#L538-1 test_~tmp___0~3 := test_#t~nondet43;havoc test_#t~nondet43; 592#L548 assume !(0 != test_~tmp___0~3); 628#L548-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 643#L558 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 573#L566-2 assume !(0 != ~pumpRunning~0); 626#L276 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 607#L334 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret18, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 608#L308-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret38, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 586#L142-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 587#L147-1 isHighWaterLevel_#t~ret38 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret38;havoc isHighWaterLevel_#t~ret38; 595#L454-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 675#L454-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 657#L460-1 processEnvironment__wrappee__highWaterSensor_#t~ret18 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret18;havoc processEnvironment__wrappee__highWaterSensor_#t~ret18; 616#L312-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 610#L283 havoc __utac_acc__Specification1_spec__1_#t~ret40, __utac_acc__Specification1_spec__1_#t~ret41, __utac_acc__Specification1_spec__1_~tmp~6, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~6;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 672#L102-2 __utac_acc__Specification1_spec__1_#t~ret40 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~6 := __utac_acc__Specification1_spec__1_#t~ret40;havoc __utac_acc__Specification1_spec__1_#t~ret40; 673#L500 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6); 646#L500-1 [2021-07-06 20:15:03,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:15:03,023 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:15:03,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:15:03,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336250356] [2021-07-06 20:15:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:15:03,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:15:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:03,079 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:03,121 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:03,132 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:15:03,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:15:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash 87587064, now seen corresponding path program 1 times [2021-07-06 20:15:03,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:15:03,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862806000] [2021-07-06 20:15:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:15:03,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:15:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:03,149 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:03,153 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:03,166 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:15:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:15:03,167 INFO L82 PathProgramCache]: Analyzing trace with hash 543658258, now seen corresponding path program 1 times [2021-07-06 20:15:03,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:15:03,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059070933] [2021-07-06 20:15:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:15:03,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:15:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:03,218 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:15:03,252 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:15:03,266 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:15:03,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:15:03,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-07-06 20:15:42,535 WARN L205 SmtUtils]: Spent 39.11 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:15:42,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:15:42,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:16:03,191 WARN L205 SmtUtils]: Spent 20.54 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:16:03,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:16:03 BoogieIcfgContainer [2021-07-06 20:16:03,316 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:16:03,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:16:03,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:16:03,318 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:16:03,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:15:02" (3/4) ... [2021-07-06 20:16:03,320 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:16:03,376 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:16:03,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:16:03,380 INFO L168 Benchmark]: Toolchain (without parser) took 62706.77 ms. Allocated memory was 56.6 MB in the beginning and 107.0 MB in the end (delta: 50.3 MB). Free memory was 33.8 MB in the beginning and 50.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2021-07-06 20:16:03,380 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory is still 38.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:16:03,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.41 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.6 MB in the beginning and 45.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:16:03,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.15 ms. Allocated memory is still 73.4 MB. Free memory was 45.2 MB in the beginning and 41.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:16:03,381 INFO L168 Benchmark]: Boogie Preprocessor took 34.96 ms. Allocated memory is still 73.4 MB. Free memory was 41.2 MB in the beginning and 38.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:16:03,382 INFO L168 Benchmark]: RCFGBuilder took 858.11 ms. Allocated memory is still 73.4 MB. Free memory was 38.4 MB in the beginning and 35.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:16:03,382 INFO L168 Benchmark]: BuchiAutomizer took 61184.59 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 35.1 MB in the beginning and 54.0 MB in the end (delta: -18.9 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:16:03,383 INFO L168 Benchmark]: Witness Printer took 61.65 ms. Allocated memory is still 107.0 MB. Free memory was 54.0 MB in the beginning and 50.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:16:03,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory is still 38.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 489.41 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.6 MB in the beginning and 45.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.15 ms. Allocated memory is still 73.4 MB. Free memory was 45.2 MB in the beginning and 41.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.96 ms. Allocated memory is still 73.4 MB. Free memory was 41.2 MB in the beginning and 38.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 858.11 ms. Allocated memory is still 73.4 MB. Free memory was 38.4 MB in the beginning and 35.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 61184.59 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 35.1 MB in the beginning and 54.0 MB in the end (delta: -18.9 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. * Witness Printer took 61.65 ms. Allocated memory is still 107.0 MB. Free memory was 54.0 MB in the beginning and 50.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 166 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 61.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 60.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 33.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 166 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 350 SDtfs, 313 SDslu, 66 SDs, 0 SdLazy, 33 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 528]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=17393} State at position 1 is {NULL=0, NULL=17395, NULL=17393, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1993bd4b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d43ba9a=60, NULL=42617, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ea62e74=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24c43ae0=0, NULL=0, NULL=58918, tmp=0, NULL=42618, NULL=0, retValue_acc=0, tmp___1=0, NULL=42626, NULL=58923, NULL=0, cleanupTimeShifts=4, NULL=42628, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4cbf5a3e=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@797fd653=0, NULL=0, waterLevel=1, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=17396, tmp=0, retValue_acc=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=42621, NULL=0, NULL=0, tmp___0=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ea6defd=0, NULL=17394, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c7c9a82=0, NULL=42630, NULL=0, NULL=0, retValue_acc=0, retValue_acc=0, NULL=58919, NULL=17397, tmp___0=0, NULL=0, NULL=0, NULL=42629, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c51bea9=0, NULL=0, tmp___0=0, NULL=0, NULL=0, tmp=0, NULL=58922, NULL=42620, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=42619, NULL=0, NULL=42616, \result=0, NULL=0, NULL=42623, \result=0, NULL=58920, NULL=0, NULL=58917, NULL=58921, NULL=42625, NULL=58915, tmp___2=60, splverifierCounter=0, NULL=0, \result=0, NULL=42624, NULL=58916, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d1a7c03=0, NULL=42622, NULL=58924} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L59] int waterLevel = 1; [L60] int methaneLevelCritical = 0; [L162] int cleanupTimeShifts = 4; [L268] int pumpRunning = 0; [L269] int systemActive = 1; [L789] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L241] int retValue_acc ; [L242] int tmp ; [L611] int retValue_acc ; [L614] retValue_acc = 1 [L615] return (retValue_acc); [L248] tmp = valid_product() [L250] COND TRUE \read(tmp) [L519] int splverifierCounter ; [L520] int tmp ; [L521] int tmp___0 ; [L522] int tmp___1 ; [L523] int tmp___2 ; [L526] splverifierCounter = 0 Loop: [L528] COND TRUE 1 [L530] COND TRUE splverifierCounter < 4 [L536] tmp = __VERIFIER_nondet_int() [L538] COND FALSE !(\read(tmp)) [L546] tmp___0 = __VERIFIER_nondet_int() [L548] COND FALSE !(\read(tmp___0)) [L556] tmp___2 = __VERIFIER_nondet_int() [L558] COND TRUE \read(tmp___2) [L487] systemActive = 1 [L276] COND FALSE !(\read(pumpRunning)) [L283] COND TRUE \read(systemActive) [L331] int tmp ; [L334] COND FALSE !(\read(pumpRunning)) [L305] int tmp ; [L308] COND TRUE ! pumpRunning [L446] int retValue_acc ; [L447] int tmp ; [L448] int tmp___0 ; [L139] int retValue_acc ; [L142] COND TRUE waterLevel < 2 [L143] retValue_acc = 1 [L144] return (retValue_acc); [L452] tmp = isHighWaterSensorDry() [L454] COND TRUE \read(tmp) [L455] tmp___0 = 0 [L459] retValue_acc = tmp___0 [L460] return (retValue_acc); [L310] tmp = isHighWaterLevel() [L312] COND FALSE !(\read(tmp)) [L493] int tmp ; [L494] int tmp___0 ; [L98] int retValue_acc ; [L101] retValue_acc = methaneLevelCritical [L102] return (retValue_acc); [L498] tmp = isMethaneLevelCritical() [L500] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:16:03,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...