./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product62.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_product62.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 e4021e5ed6083ccb49822fa9a7e2a9e751d393e1 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:19:54,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:19:54,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:19:54,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:19:54,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:19:54,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:19:54,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:19:54,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:19:54,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:19:54,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:19:54,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:19:54,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:19:54,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:19:54,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:19:54,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:19:54,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:19:54,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:19:54,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:19:54,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:19:54,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:19:54,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:19:54,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:19:54,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:19:54,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:19:54,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:19:54,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:19:54,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:19:54,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:19:54,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:19:54,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:19:54,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:19:54,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:19:54,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:19:54,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:19:54,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:19:54,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:19:54,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:19:54,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:19:54,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:19:54,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:19:54,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:19:54,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:19:54,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:19:54,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:19:54,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:19:54,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:19:54,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:19:54,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:19:54,143 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:19:54,143 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:19:54,143 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:19:54,143 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:19:54,144 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:19:54,144 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:19:54,144 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:19:54,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:19:54,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:19:54,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:19:54,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:19:54,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:19:54,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:19:54,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:19:54,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:19:54,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:19:54,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:19:54,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:19:54,146 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:19:54,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:19:54,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:19:54,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:19:54,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:19:54,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:19:54,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:19:54,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:19:54,148 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:19:54,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4021e5ed6083ccb49822fa9a7e2a9e751d393e1 [2021-08-27 16:19:54,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:19:54,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:19:54,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:19:54,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:19:54,423 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:19:54,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2021-08-27 16:19:54,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea80852f/a8413c69d72f4a4a9ab2a2a518018119/FLAGdaea4d226 [2021-08-27 16:19:54,903 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:19:54,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2021-08-27 16:19:54,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea80852f/a8413c69d72f4a4a9ab2a2a518018119/FLAGdaea4d226 [2021-08-27 16:19:54,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea80852f/a8413c69d72f4a4a9ab2a2a518018119 [2021-08-27 16:19:54,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:19:54,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:19:54,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:19:54,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:19:54,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:19:54,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:19:54" (1/1) ... [2021-08-27 16:19:54,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e08ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:54, skipping insertion in model container [2021-08-27 16:19:54,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:19:54" (1/1) ... [2021-08-27 16:19:54,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:19:54,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:19:55,091 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_product62.cil.c[1281,1294] [2021-08-27 16:19:55,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:19:55,214 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:19:55,222 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_product62.cil.c[1281,1294] [2021-08-27 16:19:55,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:19:55,268 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:19:55,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55 WrapperNode [2021-08-27 16:19:55,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:19:55,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:19:55,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:19:55,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:19:55,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:19:55,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:19:55,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:19:55,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:19:55,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:19:55,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:19:55,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:19:55,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:19:55,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (1/1) ... [2021-08-27 16:19:55,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:19:55,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:19:55,442 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 16:19:55,465 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 16:19:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:19:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:19:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:19:55,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:19:56,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:19:56,388 INFO L299 CfgBuilder]: Removed 350 assume(true) statements. [2021-08-27 16:19:56,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:56 BoogieIcfgContainer [2021-08-27 16:19:56,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:19:56,391 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:19:56,391 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:19:56,394 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:19:56,394 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:56,394 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:19:54" (1/3) ... [2021-08-27 16:19:56,395 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cb74424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:19:56, skipping insertion in model container [2021-08-27 16:19:56,395 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:56,395 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:55" (2/3) ... [2021-08-27 16:19:56,395 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cb74424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:19:56, skipping insertion in model container [2021-08-27 16:19:56,396 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:56,396 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:56" (3/3) ... [2021-08-27 16:19:56,396 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2021-08-27 16:19:56,434 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:19:56,434 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:19:56,434 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:19:56,434 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:19:56,435 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:19:56,435 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:19:56,435 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:19:56,435 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:19:56,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 222 states, 221 states have (on average 1.506787330316742) internal successors, (333), 221 states have internal predecessors, (333), 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 16:19:56,483 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2021-08-27 16:19:56,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:56,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:56,489 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:56,489 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:56,489 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:19:56,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 222 states, 221 states have (on average 1.506787330316742) internal successors, (333), 221 states have internal predecessors, (333), 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 16:19:56,504 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2021-08-27 16:19:56,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:56,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:56,506 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:56,507 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:56,515 INFO L791 eck$LassoCheckResult]: Stem: 211#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);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(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 137#L-1true havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 50#L433true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 22#L441true main_#t~ret37 := valid_product_#res;main_~tmp~8 := main_#t~ret37;havoc main_#t~ret37; 142#L528true assume 0 != main_~tmp~8; 131#L505true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 188#L390-1true [2021-08-27 16:19:56,515 INFO L793 eck$LassoCheckResult]: Loop: 188#L390-1true assume !false; 208#L67true assume test_~splverifierCounter~0 < 4; 217#L68true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 49#L76true assume !(0 != test_~tmp~0); 204#L76-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 114#L86true assume !(0 != test_~tmp___0~0); 55#L86-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 198#L96true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 221#L104-2true assume !(0 != ~pumpRunning~0); 44#L140true assume !(0 != ~systemActive~0); 205#L147true havoc __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_#t~ret35, __utac_acc__Specification4_spec__1_~tmp~7, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~7;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 112#L983true __utac_acc__Specification4_spec__1_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~7 := __utac_acc__Specification4_spec__1_#t~ret34;havoc __utac_acc__Specification4_spec__1_#t~ret34; 180#L390true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~7); 188#L390-1true [2021-08-27 16:19:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:56,521 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:19:56,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:56,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622492045] [2021-08-27 16:19:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:56,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:56,683 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:56,760 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:56,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1674172477, now seen corresponding path program 1 times [2021-08-27 16:19:56,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:56,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600416696] [2021-08-27 16:19:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:56,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:19:56,807 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 16:19:56,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:19:56,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600416696] [2021-08-27 16:19:56,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600416696] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:19:56,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:19:56,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:19:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208892147] [2021-08-27 16:19:56,814 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:19:56,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:19:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:19:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:19:56,827 INFO L87 Difference]: Start difference. First operand has 222 states, 221 states have (on average 1.506787330316742) internal successors, (333), 221 states have internal predecessors, (333), 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) [2021-08-27 16:19:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:19:56,887 INFO L93 Difference]: Finished difference Result 222 states and 323 transitions. [2021-08-27 16:19:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:19:56,898 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 222 states and 323 transitions. [2021-08-27 16:19:56,901 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 143 [2021-08-27 16:19:56,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 222 states to 215 states and 315 transitions. [2021-08-27 16:19:56,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2021-08-27 16:19:56,909 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 215 [2021-08-27 16:19:56,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 215 states and 315 transitions. [2021-08-27 16:19:56,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:19:56,911 INFO L681 BuchiCegarLoop]: Abstraction has 215 states and 315 transitions. [2021-08-27 16:19:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states and 315 transitions. [2021-08-27 16:19:56,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-08-27 16:19:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 215 states have (on average 1.4651162790697674) internal successors, (315), 214 states have internal predecessors, (315), 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 16:19:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 315 transitions. [2021-08-27 16:19:56,944 INFO L704 BuchiCegarLoop]: Abstraction has 215 states and 315 transitions. [2021-08-27 16:19:56,944 INFO L587 BuchiCegarLoop]: Abstraction has 215 states and 315 transitions. [2021-08-27 16:19:56,945 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:19:56,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 215 states and 315 transitions. [2021-08-27 16:19:56,946 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 143 [2021-08-27 16:19:56,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:56,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:56,947 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:56,948 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:56,948 INFO L791 eck$LassoCheckResult]: Stem: 667#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);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(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 643#L-1 havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 537#L433 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 488#L441 main_#t~ret37 := valid_product_#res;main_~tmp~8 := main_#t~ret37;havoc main_#t~ret37; 489#L528 assume 0 != main_~tmp~8; 637#L505 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 624#L390-1 [2021-08-27 16:19:56,948 INFO L793 eck$LassoCheckResult]: Loop: 624#L390-1 assume !false; 663#L67 assume test_~splverifierCounter~0 < 4; 666#L68 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 534#L76 assume !(0 != test_~tmp~0); 536#L76-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 616#L86 assume !(0 != test_~tmp___0~0); 545#L86-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 546#L96 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 484#L104-2 assume !(0 != ~pumpRunning~0); 527#L140 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 528#L224 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 567#L198-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 568#L172-3 assume !(0 == ~pumpRunning~0); 494#L147 havoc __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_#t~ret35, __utac_acc__Specification4_spec__1_~tmp~7, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~7;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 613#L983 __utac_acc__Specification4_spec__1_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~7 := __utac_acc__Specification4_spec__1_#t~ret34;havoc __utac_acc__Specification4_spec__1_#t~ret34; 614#L390 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~7); 624#L390-1 [2021-08-27 16:19:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:56,949 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:19:56,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:56,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751442694] [2021-08-27 16:19:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:56,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:56,997 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:57,036 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:57,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1243674303, now seen corresponding path program 1 times [2021-08-27 16:19:57,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:57,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643009523] [2021-08-27 16:19:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:57,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:19:57,065 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 16:19:57,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:19:57,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643009523] [2021-08-27 16:19:57,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643009523] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:19:57,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:19:57,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:19:57,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638081964] [2021-08-27 16:19:57,066 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:19:57,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:19:57,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:19:57,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:19:57,070 INFO L87 Difference]: Start difference. First operand 215 states and 315 transitions. cyclomatic complexity: 102 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16:19:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:19:57,196 INFO L93 Difference]: Finished difference Result 211 states and 291 transitions. [2021-08-27 16:19:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:19:57,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 211 states and 291 transitions. [2021-08-27 16:19:57,199 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 144 [2021-08-27 16:19:57,201 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 211 states to 211 states and 291 transitions. [2021-08-27 16:19:57,201 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 211 [2021-08-27 16:19:57,202 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2021-08-27 16:19:57,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 211 states and 291 transitions. [2021-08-27 16:19:57,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:19:57,205 INFO L681 BuchiCegarLoop]: Abstraction has 211 states and 291 transitions. [2021-08-27 16:19:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states and 291 transitions. [2021-08-27 16:19:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-08-27 16:19:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 211 states have (on average 1.3791469194312795) internal successors, (291), 210 states have internal predecessors, (291), 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 16:19:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 291 transitions. [2021-08-27 16:19:57,220 INFO L704 BuchiCegarLoop]: Abstraction has 211 states and 291 transitions. [2021-08-27 16:19:57,220 INFO L587 BuchiCegarLoop]: Abstraction has 211 states and 291 transitions. [2021-08-27 16:19:57,220 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:19:57,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 211 states and 291 transitions. [2021-08-27 16:19:57,221 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 144 [2021-08-27 16:19:57,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:57,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:57,221 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:57,221 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, 1] [2021-08-27 16:19:57,221 INFO L791 eck$LassoCheckResult]: Stem: 1058#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);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(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 966#L-1 havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 967#L433 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 932#L441 main_#t~ret37 := valid_product_#res;main_~tmp~8 := main_#t~ret37;havoc main_#t~ret37; 933#L528 assume 0 != main_~tmp~8; 958#L505 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 915#L390-1 [2021-08-27 16:19:57,221 INFO L793 eck$LassoCheckResult]: Loop: 915#L390-1 assume !false; 1046#L67 assume test_~splverifierCounter~0 < 4; 1057#L68 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1002#L76 assume !(0 != test_~tmp~0); 1004#L76-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 889#L86 assume !(0 != test_~tmp___0~0); 890#L86-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 1012#L96 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 923#L104-2 assume !(0 != ~pumpRunning~0); 993#L140 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 994#L224 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1023#L198-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1038#L172-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 955#L991-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 956#L996-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 982#L343-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1026#L343-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1027#L349-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 975#L176-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 940#L147 havoc __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_#t~ret35, __utac_acc__Specification4_spec__1_~tmp~7, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~7;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 885#L983 __utac_acc__Specification4_spec__1_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~7 := __utac_acc__Specification4_spec__1_#t~ret34;havoc __utac_acc__Specification4_spec__1_#t~ret34; 886#L390 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~7); 915#L390-1 [2021-08-27 16:19:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:19:57,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:57,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065832572] [2021-08-27 16:19:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:57,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:57,272 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:57,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1113090803, now seen corresponding path program 1 times [2021-08-27 16:19:57,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:57,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386062637] [2021-08-27 16:19:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:57,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:57,338 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:57,345 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:57,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:57,346 INFO L82 PathProgramCache]: Analyzing trace with hash 140214323, now seen corresponding path program 1 times [2021-08-27 16:19:57,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:57,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250654774] [2021-08-27 16:19:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:57,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:57,386 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:57,430 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:42,017 WARN L207 SmtUtils]: Spent 44.17 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:21:26,108 WARN L207 SmtUtils]: Spent 21.04 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:21:26,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:21:26 BoogieIcfgContainer [2021-08-27 16:21:26,226 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:21:26,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:21:26,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:21:26,227 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:21:26,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:56" (3/4) ... [2021-08-27 16:21:26,231 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:21:26,278 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:21:26,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:21:26,280 INFO L168 Benchmark]: Toolchain (without parser) took 91355.98 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 25.8 MB in the beginning and 36.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:26,281 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 31.8 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:21:26,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.66 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 35.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:26,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.20 ms. Allocated memory is still 60.8 MB. Free memory was 35.8 MB in the beginning and 30.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:26,282 INFO L168 Benchmark]: Boogie Preprocessor took 62.87 ms. Allocated memory is still 60.8 MB. Free memory was 30.3 MB in the beginning and 39.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:26,282 INFO L168 Benchmark]: RCFGBuilder took 982.60 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.7 MB in the beginning and 33.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:26,283 INFO L168 Benchmark]: BuchiAutomizer took 89835.57 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 33.7 MB in the beginning and 39.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:26,283 INFO L168 Benchmark]: Witness Printer took 51.12 ms. Allocated memory is still 88.1 MB. Free memory was 39.5 MB in the beginning and 36.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:26,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 31.8 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.66 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 35.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.20 ms. Allocated memory is still 60.8 MB. Free memory was 35.8 MB in the beginning and 30.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.87 ms. Allocated memory is still 60.8 MB. Free memory was 30.3 MB in the beginning and 39.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 982.60 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.7 MB in the beginning and 33.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 89835.57 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 33.7 MB in the beginning and 39.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * Witness Printer took 51.12 ms. Allocated memory is still 88.1 MB. Free memory was 39.5 MB in the beginning and 36.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 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 211 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 89.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 89.4s. Construction of modules took 0.1s. 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 38.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 215 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 489 SDslu, 75 SDs, 0 SdLazy, 45 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.5ms 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: 66]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=24373} State at position 1 is {retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6190ada=59, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4407645c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59539764=0, NULL=24373, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2031ec35=0, NULL=0, methaneLevelCritical=0, NULL=24397, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f42dc50=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4912a0b=0, NULL=0, retValue_acc=0, NULL=24385, NULL=0, tmp___1=0, NULL=24392, NULL=24386, NULL=0, cleanupTimeShifts=4, tmp=0, NULL=24393, NULL=0, NULL=0, waterLevel=1, NULL=24394, tmp___0=0, NULL=24374, \result=1, head=0, pumpRunning=0, NULL=24380, NULL=24390, NULL=0, tmp=1, \result=1, NULL=0, NULL=24376, NULL=0, NULL=0, tmp=1, tmp=1, NULL=24401, NULL=24377, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1baa8426=0, tmp=0, head=0, NULL=24378, NULL=0, tmp=0, retValue_acc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7254ad97=0, NULL=24389, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c75fb99=0, NULL=0, tmp___0=0, NULL=0, NULL=0, NULL=24382, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@785d7a5e=0, tmp=0, NULL=24396, NULL=24387, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=24381, \result=1, NULL=24379, \result=0, NULL=0, NULL=0, NULL=0, NULL=24400, \result=0, NULL=24391, NULL=0, NULL=24384, NULL=0, retValue_acc=1, NULL=24383, NULL=24399, retValue_acc=1, tmp___2=59, splverifierCounter=0, NULL=0, NULL=0, NULL=24388, NULL=24398, NULL=24395, NULL=24375, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e8f6c1b=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L132] int pumpRunning = 0; [L133] int systemActive = 1; [L446] int cleanupTimeShifts = 4; [L711] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; [L519] int retValue_acc ; [L520] int tmp ; [L437] int retValue_acc ; [L440] retValue_acc = 1 [L441] return (retValue_acc); [L526] tmp = valid_product() [L528] COND TRUE \read(tmp) [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 Loop: [L66] COND TRUE 1 [L68] COND TRUE splverifierCounter < 4 [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L376] systemActive = 1 [L140] COND FALSE !(\read(pumpRunning)) [L147] COND TRUE \read(systemActive) [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L195] int tmp ; [L198] COND FALSE !(\read(pumpRunning)) [L169] int tmp ; [L172] COND TRUE ! pumpRunning [L335] int retValue_acc ; [L336] int tmp ; [L337] int tmp___0 ; [L988] int retValue_acc ; [L991] COND TRUE waterLevel < 2 [L992] retValue_acc = 1 [L993] return (retValue_acc); [L341] tmp = isHighWaterSensorDry() [L343] COND TRUE \read(tmp) [L344] tmp___0 = 0 [L348] retValue_acc = tmp___0 [L349] return (retValue_acc); [L174] tmp = isHighWaterLevel() [L176] COND FALSE !(\read(tmp)) [L383] int tmp ; [L384] int tmp___0 ; [L979] int retValue_acc ; [L982] retValue_acc = waterLevel [L983] return (retValue_acc); [L388] tmp = getWaterLevel() [L390] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:21:26,331 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...