./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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_spec4_product39.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 944b52f1c750b2b149a29532cc6e317483d681a8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-dev-20ed64e [2021-08-27 16:17:41,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:17:41,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:17:41,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:17:41,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:17:41,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:17:41,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:17:41,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:17:41,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:17:41,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:17:41,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:17:41,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:17:41,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:17:41,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:17:41,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:17:41,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:17:41,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:17:41,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:17:41,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:17:41,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:17:41,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:17:41,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:17:41,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:17:41,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:17:41,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:17:41,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:17:41,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:17:41,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:17:41,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:17:41,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:17:41,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:17:41,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:17:41,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:17:41,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:17:41,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:17:41,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:17:41,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:17:41,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:17:41,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:17:41,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:17:41,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:17:41,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:17:41,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:17:41,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:17:41,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:17:41,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:17:41,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:17:41,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:17:41,293 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:17:41,293 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:17:41,293 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:17:41,293 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:17:41,294 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:17:41,295 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:17:41,295 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:17:41,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:17:41,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:17:41,295 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:17:41,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:17:41,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:17:41,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:17:41,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:17:41,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:17:41,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:17:41,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:17:41,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:17:41,297 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:17:41,297 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:17:41,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:17:41,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:17:41,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:17:41,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:17:41,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:17:41,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:17:41,300 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:17:41,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b52f1c750b2b149a29532cc6e317483d681a8 [2021-08-27 16:17:41,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:17:41,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:17:41,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:17:41,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:17:41,659 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:17:41,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-08-27 16:17:41,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a109e1f35/0009ba2228024e53886df4586ea431b4/FLAG9fc85a9e7 [2021-08-27 16:17:42,136 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:17:42,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-08-27 16:17:42,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a109e1f35/0009ba2228024e53886df4586ea431b4/FLAG9fc85a9e7 [2021-08-27 16:17:42,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a109e1f35/0009ba2228024e53886df4586ea431b4 [2021-08-27 16:17:42,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:17:42,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:17:42,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:17:42,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:17:42,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:17:42,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a48f571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42, skipping insertion in model container [2021-08-27 16:17:42,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:17:42,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:17:42,485 WARN L228 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_spec4_product39.cil.c[15172,15185] [2021-08-27 16:17:42,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:17:42,519 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:17:42,584 WARN L228 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_spec4_product39.cil.c[15172,15185] [2021-08-27 16:17:42,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:17:42,623 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:17:42,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42 WrapperNode [2021-08-27 16:17:42,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:17:42,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:17:42,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:17:42,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:17:42,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:17:42,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:17:42,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:17:42,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:17:42,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:17:42,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:17:42,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:17:42,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:17:42,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (1/1) ... [2021-08-27 16:17:42,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:17:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:17:42,789 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) [2021-08-27 16:17:42,819 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 [2021-08-27 16:17:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:17:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:17:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:17:42,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:17:43,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:17:43,694 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-08-27 16:17:43,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:43 BoogieIcfgContainer [2021-08-27 16:17:43,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:17:43,697 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:17:43,697 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:17:43,700 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:17:43,700 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:43,701 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:17:42" (1/3) ... [2021-08-27 16:17:43,702 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aec99f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:17:43, skipping insertion in model container [2021-08-27 16:17:43,703 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:43,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:42" (2/3) ... [2021-08-27 16:17:43,703 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aec99f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:17:43, skipping insertion in model container [2021-08-27 16:17:43,703 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:43,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:43" (3/3) ... [2021-08-27 16:17:43,705 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2021-08-27 16:17:43,747 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:17:43,747 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:17:43,747 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:17:43,748 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:17:43,748 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:17:43,748 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:17:43,748 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:17:43,748 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:17:43,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 states have internal predecessors, (168), 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) [2021-08-27 16:17:43,800 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:17:43,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:43,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:43,807 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:43,808 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:43,808 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:17:43,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 states have internal predecessors, (168), 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) [2021-08-27 16:17:43,821 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:17:43,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:43,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:43,823 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:43,823 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:43,831 INFO L791 eck$LassoCheckResult]: Stem: 104#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 40#L-1true havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 103#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 56#L75true main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 91#L906true assume 0 != main_~tmp~7; 34#L883true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 93#L928-1true [2021-08-27 16:17:43,832 INFO L793 eck$LassoCheckResult]: Loop: 93#L928-1true assume !false; 70#L462true assume test_~splverifierCounter~0 < 4; 41#L463true test_~tmp~3 := test_#t~nondet43;havoc test_#t~nondet43; 24#L471true assume !(0 != test_~tmp~3); 95#L471-1true test_~tmp___0~0 := test_#t~nondet44;havoc test_#t~nondet44; 23#L481true assume !(0 != test_~tmp___0~0); 97#L481-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 7#L491true assume 0 != test_~tmp___2~0; 32#L497-1true assume !(0 != ~pumpRunning~0); 76#L534true assume !(0 != ~systemActive~0); 69#L541true havoc __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 72#L805true __utac_acc__Specification4_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret78;havoc __utac_acc__Specification4_spec__1_#t~ret78; 61#L928true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 93#L928-1true [2021-08-27 16:17:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:43,838 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:17:43,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:43,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414745399] [2021-08-27 16:17:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:43,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:44,079 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:44,222 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:44,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:44,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1671401909, now seen corresponding path program 1 times [2021-08-27 16:17:44,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:44,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764349997] [2021-08-27 16:17:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:44,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:44,253 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:44,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:44,273 INFO L82 PathProgramCache]: Analyzing trace with hash 42877029, now seen corresponding path program 1 times [2021-08-27 16:17:44,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:44,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308377267] [2021-08-27 16:17:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:44,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:17:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:17:44,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:17:44,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308377267] [2021-08-27 16:17:44,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308377267] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:17:44,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:17:44,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:17:44,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108260998] [2021-08-27 16:17:44,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:17:44,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:17:44,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:17:44,545 INFO L87 Difference]: Start difference. First operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 states have internal predecessors, (168), 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 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-08-27 16:17:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:17:44,780 INFO L93 Difference]: Finished difference Result 264 states and 378 transitions. [2021-08-27 16:17:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:17:44,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 264 states and 378 transitions. [2021-08-27 16:17:44,790 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 169 [2021-08-27 16:17:44,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 264 states to 243 states and 357 transitions. [2021-08-27 16:17:44,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 243 [2021-08-27 16:17:44,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 243 [2021-08-27 16:17:44,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 243 states and 357 transitions. [2021-08-27 16:17:44,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:17:44,804 INFO L681 BuchiCegarLoop]: Abstraction has 243 states and 357 transitions. [2021-08-27 16:17:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states and 357 transitions. [2021-08-27 16:17:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 144. [2021-08-27 16:17:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 144 states have (on average 1.4583333333333333) internal successors, (210), 143 states have internal predecessors, (210), 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) [2021-08-27 16:17:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 210 transitions. [2021-08-27 16:17:44,842 INFO L704 BuchiCegarLoop]: Abstraction has 144 states and 210 transitions. [2021-08-27 16:17:44,843 INFO L587 BuchiCegarLoop]: Abstraction has 144 states and 210 transitions. [2021-08-27 16:17:44,843 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:17:44,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 144 states and 210 transitions. [2021-08-27 16:17:44,844 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 100 [2021-08-27 16:17:44,846 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:44,846 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:44,847 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:44,847 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:44,848 INFO L791 eck$LassoCheckResult]: Stem: 494#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 451#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 452#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 470#L75 main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 471#L906 assume 0 != main_~tmp~7; 445#L883 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 446#L928-1 [2021-08-27 16:17:44,848 INFO L793 eck$LassoCheckResult]: Loop: 446#L928-1 assume !false; 485#L462 assume test_~splverifierCounter~0 < 4; 453#L463 test_~tmp~3 := test_#t~nondet43;havoc test_#t~nondet43; 428#L471 assume !(0 != test_~tmp~3); 430#L471-1 test_~tmp___0~0 := test_#t~nondet44;havoc test_#t~nondet44; 425#L481 assume !(0 != test_~tmp___0~0); 426#L481-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 400#L491 assume 0 != test_~tmp___2~0; 401#L497-1 assume !(0 != ~pumpRunning~0); 442#L534 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret48, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 413#L592 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret47, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 415#L566-1 assume !(0 == ~pumpRunning~0); 449#L541 havoc __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 484#L805 __utac_acc__Specification4_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret78;havoc __utac_acc__Specification4_spec__1_#t~ret78; 476#L928 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 446#L928-1 [2021-08-27 16:17:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:17:44,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:44,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952470430] [2021-08-27 16:17:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:44,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:44,886 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:44,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1955219778, now seen corresponding path program 1 times [2021-08-27 16:17:44,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:44,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356814033] [2021-08-27 16:17:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:44,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:17:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:17:44,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:17:44,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356814033] [2021-08-27 16:17:44,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356814033] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:17:44,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:17:44,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:17:44,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920616167] [2021-08-27 16:17:44,998 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:17:44,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:17:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:17:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:17:44,999 INFO L87 Difference]: Start difference. First operand 144 states and 210 transitions. cyclomatic complexity: 69 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) [2021-08-27 16:17:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:17:45,082 INFO L93 Difference]: Finished difference Result 183 states and 250 transitions. [2021-08-27 16:17:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:17:45,083 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 250 transitions. [2021-08-27 16:17:45,085 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 130 [2021-08-27 16:17:45,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 183 states and 250 transitions. [2021-08-27 16:17:45,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 183 [2021-08-27 16:17:45,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2021-08-27 16:17:45,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 250 transitions. [2021-08-27 16:17:45,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:17:45,092 INFO L681 BuchiCegarLoop]: Abstraction has 183 states and 250 transitions. [2021-08-27 16:17:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states and 250 transitions. [2021-08-27 16:17:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-08-27 16:17:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 183 states have (on average 1.366120218579235) internal successors, (250), 182 states have internal predecessors, (250), 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) [2021-08-27 16:17:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 250 transitions. [2021-08-27 16:17:45,114 INFO L704 BuchiCegarLoop]: Abstraction has 183 states and 250 transitions. [2021-08-27 16:17:45,114 INFO L587 BuchiCegarLoop]: Abstraction has 183 states and 250 transitions. [2021-08-27 16:17:45,114 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:17:45,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 183 states and 250 transitions. [2021-08-27 16:17:45,115 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 130 [2021-08-27 16:17:45,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:45,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:45,117 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:45,118 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] [2021-08-27 16:17:45,119 INFO L791 eck$LassoCheckResult]: Stem: 842#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 787#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 788#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 810#L75 main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 811#L906 assume 0 != main_~tmp~7; 778#L883 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 779#L928-1 [2021-08-27 16:17:45,119 INFO L793 eck$LassoCheckResult]: Loop: 779#L928-1 assume !false; 886#L462 assume test_~splverifierCounter~0 < 4; 887#L463 test_~tmp~3 := test_#t~nondet43;havoc test_#t~nondet43; 898#L471 assume !(0 != test_~tmp~3); 896#L471-1 test_~tmp___0~0 := test_#t~nondet44;havoc test_#t~nondet44; 895#L481 assume !(0 != test_~tmp___0~0); 893#L481-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 731#L491 assume 0 != test_~tmp___2~0; 732#L497-1 assume !(0 != ~pumpRunning~0); 856#L534 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret48, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 746#L592 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret47, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 747#L566-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret66, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~10;havoc isHighWaterSensorDry_~retValue_acc~10; 764#L813-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~10 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~10; 765#L818-1 isHighWaterLevel_#t~ret66 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret66;havoc isHighWaterLevel_#t~ret66; 744#L694-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 745#L694-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 813#L700-1 processEnvironment__wrappee__highWaterSensor_#t~ret47 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret47;havoc processEnvironment__wrappee__highWaterSensor_#t~ret47; 814#L570-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 786#L541 havoc __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 891#L805 __utac_acc__Specification4_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret78;havoc __utac_acc__Specification4_spec__1_#t~ret78; 889#L928 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 779#L928-1 [2021-08-27 16:17:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:45,120 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:17:45,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:45,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435579492] [2021-08-27 16:17:45,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:45,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,162 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,203 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:45,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1592970094, now seen corresponding path program 1 times [2021-08-27 16:17:45,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:45,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339028225] [2021-08-27 16:17:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:45,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,222 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,231 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:45,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2049041288, now seen corresponding path program 1 times [2021-08-27 16:17:45,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:45,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557219661] [2021-08-27 16:17:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:45,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,294 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,344 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:26,774 WARN L207 SmtUtils]: Spent 41.21 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:19:10,461 WARN L207 SmtUtils]: Spent 20.38 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:19:10,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:19:10 BoogieIcfgContainer [2021-08-27 16:19:10,575 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:19:10,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:19:10,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:19:10,576 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:19:10,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:43" (3/4) ... [2021-08-27 16:19:10,579 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:19:10,640 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:19:10,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:19:10,647 INFO L168 Benchmark]: Toolchain (without parser) took 88477.13 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 31.1 MB in the beginning and 41.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:10,648 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 37.1 MB in the end (delta: 71.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:19:10,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.14 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.0 MB in the beginning and 43.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:10,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 39.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:10,650 INFO L168 Benchmark]: Boogie Preprocessor took 79.57 ms. Allocated memory is still 67.1 MB. Free memory was 39.8 MB in the beginning and 37.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:10,650 INFO L168 Benchmark]: RCFGBuilder took 931.44 ms. Allocated memory is still 67.1 MB. Free memory was 37.3 MB in the beginning and 43.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:10,651 INFO L168 Benchmark]: BuchiAutomizer took 86877.83 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 43.4 MB in the beginning and 43.2 MB in the end (delta: 161.4 kB). Peak memory consumption was 58.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:10,651 INFO L168 Benchmark]: Witness Printer took 69.46 ms. Allocated memory is still 98.6 MB. Free memory was 43.2 MB in the beginning and 41.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:10,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 37.1 MB in the end (delta: 71.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 454.14 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.0 MB in the beginning and 43.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 39.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.57 ms. Allocated memory is still 67.1 MB. Free memory was 39.8 MB in the beginning and 37.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 931.44 ms. Allocated memory is still 67.1 MB. Free memory was 37.3 MB in the beginning and 43.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 86877.83 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 43.4 MB in the beginning and 43.2 MB in the end (delta: 161.4 kB). Peak memory consumption was 58.1 MB. Max. memory is 16.1 GB. * Witness Printer took 69.46 ms. Allocated memory is still 98.6 MB. Free memory was 43.2 MB in the beginning and 41.1 MB in the end (delta: 2.1 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 6 locations. The remainder module has 183 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 86.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 86.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 49.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 99 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 183 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 303 SDtfs, 706 SDslu, 752 SDs, 0 SdLazy, 73 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 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: 461]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4938} State at position 1 is {NULL=0, NULL=4962, NULL=0, NULL=4938, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4fc145d3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@293e2a24=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@672d732f=0, methaneLevelCritical=0, tmp=0, NULL=0, NULL=4942, retValue_acc=0, tmp___1=0, NULL=4940, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63042e65=0, NULL=4947, NULL=4964, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@335d3251=0, NULL=0, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73dc6bb1=0, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=4961, NULL=4953, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=4959, NULL=0, NULL=0, retValue_acc=1, NULL=0, tmp=1, NULL=4954, NULL=4956, tmp=1, NULL=4943, NULL=4960, head=0, NULL=0, NULL=0, tmp=0, NULL=4958, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3671ff14=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5fab35d4=0, NULL=0, NULL=4948, NULL=4951, NULL=4965, NULL=4950, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c643137=0, NULL=0, NULL=0, NULL=4955, tmp=0, NULL=4939, tmp___0=0, NULL=4949, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=4957, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@307e7ed9=0, NULL=0, NULL=4946, NULL=4941, retValue_acc=1, tmp___2=64, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=4945, NULL=4966, NULL=4963, NULL=4944, NULL=4952} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int pumpRunning = 0; [L527] int systemActive = 1; [L730] int waterLevel = 1; [L731] int methaneLevelCritical = 0; [L824] int cleanupTimeShifts = 4; [L897] int retValue_acc ; [L898] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) [L452] int splverifierCounter ; [L453] int tmp ; [L454] int tmp___0 ; [L455] int tmp___1 ; [L456] int tmp___2 ; [L459] splverifierCounter = 0 Loop: [L461] COND TRUE 1 [L463] COND TRUE splverifierCounter < 4 [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) [L534] COND FALSE !(\read(pumpRunning)) [L541] COND TRUE \read(systemActive) [L589] int tmp ; [L592] COND FALSE !(\read(pumpRunning)) [L563] int tmp ; [L566] COND TRUE ! pumpRunning [L686] int retValue_acc ; [L687] int tmp ; [L688] int tmp___0 ; [L810] int retValue_acc ; [L813] COND TRUE waterLevel < 2 [L814] retValue_acc = 1 [L815] return (retValue_acc); [L692] tmp = isHighWaterSensorDry() [L694] COND TRUE \read(tmp) [L695] tmp___0 = 0 [L699] retValue_acc = tmp___0 [L700] return (retValue_acc); [L568] tmp = isHighWaterLevel() [L570] COND FALSE !(\read(tmp)) [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:19:10,720 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...