./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product64.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product64.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 e54df5218807ebc1aaf13f5cda92067864bfb3d3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:21:31,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:21:31,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:21:31,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:21:31,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:21:31,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:21:31,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:21:31,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:21:31,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:21:31,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:21:31,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:21:31,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:21:31,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:21:31,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:21:31,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:21:31,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:21:31,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:21:31,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:21:31,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:21:31,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:21:31,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:21:31,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:21:31,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:21:31,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:21:31,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:21:31,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:21:31,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:21:31,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:21:31,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:21:31,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:21:31,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:21:31,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:21:31,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:21:31,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:21:31,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:21:31,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:21:31,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:21:31,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:21:31,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:21:31,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:21:31,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:21:31,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:21:31,373 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:21:31,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:21:31,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:21:31,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:21:31,375 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:21:31,375 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:21:31,375 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:21:31,375 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:21:31,375 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:21:31,375 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:21:31,375 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:21:31,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:21:31,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:21:31,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:21:31,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:21:31,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:21:31,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:21:31,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:21:31,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:21:31,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:21:31,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:21:31,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:21:31,377 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:21:31,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:21:31,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:21:31,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:21:31,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:21:31,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:21:31,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:21:31,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:21:31,379 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:21:31,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e54df5218807ebc1aaf13f5cda92067864bfb3d3 [2021-07-06 20:21:31,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:21:31,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:21:31,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:21:31,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:21:31,701 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:21:31,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product64.cil.c [2021-07-06 20:21:31,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75ac0d1f/d3e6432083c945e88c89810a3ae0dfc3/FLAGc275e4b56 [2021-07-06 20:21:32,168 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:21:32,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product64.cil.c [2021-07-06 20:21:32,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75ac0d1f/d3e6432083c945e88c89810a3ae0dfc3/FLAGc275e4b56 [2021-07-06 20:21:32,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75ac0d1f/d3e6432083c945e88c89810a3ae0dfc3 [2021-07-06 20:21:32,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:21:32,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:21:32,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:21:32,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:21:32,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:21:32,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:32,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68926a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32, skipping insertion in model container [2021-07-06 20:21:32,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:32,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:21:32,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:21:32,830 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product64.cil.c[6499,6512] [2021-07-06 20:21:32,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:21:32,870 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:21:32,898 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product64.cil.c[6499,6512] [2021-07-06 20:21:32,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:21:32,955 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:21:32,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32 WrapperNode [2021-07-06 20:21:32,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:21:32,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:21:32,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:21:32,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:21:32,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:32,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:21:33,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:21:33,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:21:33,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:21:33,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:21:33,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:21:33,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:21:33,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:21:33,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (1/1) ... [2021-07-06 20:21:33,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:21:33,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:21:33,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:21:33,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:21:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:21:33,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:21:33,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:21:33,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:21:33,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:21:33,861 INFO L299 CfgBuilder]: Removed 356 assume(true) statements. [2021-07-06 20:21:33,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:21:33 BoogieIcfgContainer [2021-07-06 20:21:33,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:21:33,865 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:21:33,865 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:21:33,867 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:21:33,867 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:21:33,867 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:21:32" (1/3) ... [2021-07-06 20:21:33,868 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e494c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:21:33, skipping insertion in model container [2021-07-06 20:21:33,868 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:21:33,868 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:32" (2/3) ... [2021-07-06 20:21:33,868 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e494c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:21:33, skipping insertion in model container [2021-07-06 20:21:33,868 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:21:33,869 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:21:33" (3/3) ... [2021-07-06 20:21:33,869 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product64.cil.c [2021-07-06 20:21:33,894 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:21:33,894 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:21:33,894 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:21:33,894 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:21:33,894 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:21:33,895 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:21:33,895 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:21:33,895 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:21:33,907 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:21:33,925 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-07-06 20:21:33,925 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:33,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:33,931 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:33,931 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:33,931 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:21:33,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:21:33,939 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-07-06 20:21:33,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:33,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:33,940 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:33,940 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:33,943 INFO L791 eck$LassoCheckResult]: Stem: 87#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 5#L-1true havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 133#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; 58#L75true main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 214#L663true assume 0 != main_~tmp~8; 73#L639true ~methAndRunningLastTime~0 := 0; 206#L443true havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 209#L454-1true [2021-07-06 20:21:33,944 INFO L793 eck$LassoCheckResult]: Loop: 209#L454-1true assume !false; 104#L370true assume test_~splverifierCounter~0 < 4; 220#L371true test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 98#L379true assume !(0 != test_~tmp~6); 99#L379-1true test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 48#L389true assume !(0 != test_~tmp___0~2); 37#L389-1true test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 212#L399true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 96#L407-1true assume !(0 != ~pumpRunning~0); 137#L100true assume !(0 != ~systemActive~0); 222#L107true havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 185#L520-5true __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 204#L454true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 209#L454-1true [2021-07-06 20:21:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:33,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:21:33,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:33,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988492913] [2021-07-06 20:21:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:33,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:34,091 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:34,148 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:34,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:34,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:34,172 INFO L82 PathProgramCache]: Analyzing trace with hash 18699284, now seen corresponding path program 1 times [2021-07-06 20:21:34,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:34,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755140705] [2021-07-06 20:21:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:34,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:21:34,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:34,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:21:34,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:21:34,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:21:34,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755140705] [2021-07-06 20:21:34,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755140705] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:21:34,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:21:34,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:21:34,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071635251] [2021-07-06 20:21:34,237 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:21:34,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:21:34,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:21:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:21:34,251 INFO L87 Difference]: Start difference. First operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:21:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:21:34,327 INFO L93 Difference]: Finished difference Result 449 states and 661 transitions. [2021-07-06 20:21:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:21:34,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 661 transitions. [2021-07-06 20:21:34,337 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 294 [2021-07-06 20:21:34,346 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 435 states and 646 transitions. [2021-07-06 20:21:34,347 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 435 [2021-07-06 20:21:34,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 435 [2021-07-06 20:21:34,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 435 states and 646 transitions. [2021-07-06 20:21:34,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:21:34,354 INFO L681 BuchiCegarLoop]: Abstraction has 435 states and 646 transitions. [2021-07-06 20:21:34,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states and 646 transitions. [2021-07-06 20:21:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 433. [2021-07-06 20:21:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 433 states have (on average 1.4849884526558892) internal successors, (643), 432 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:21:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 643 transitions. [2021-07-06 20:21:34,400 INFO L704 BuchiCegarLoop]: Abstraction has 433 states and 643 transitions. [2021-07-06 20:21:34,400 INFO L587 BuchiCegarLoop]: Abstraction has 433 states and 643 transitions. [2021-07-06 20:21:34,400 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:21:34,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 433 states and 643 transitions. [2021-07-06 20:21:34,405 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 292 [2021-07-06 20:21:34,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:34,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:34,406 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:34,407 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:34,407 INFO L791 eck$LassoCheckResult]: Stem: 824#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 691#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 692#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; 792#L75 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 793#L663 assume 0 != main_~tmp~8; 809#L639 ~methAndRunningLastTime~0 := 0; 810#L443 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 925#L454-1 [2021-07-06 20:21:34,407 INFO L793 eck$LassoCheckResult]: Loop: 925#L454-1 assume !false; 1050#L370 assume test_~splverifierCounter~0 < 4; 926#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 836#L379 assume !(0 != test_~tmp~6); 835#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 775#L389 assume !(0 != test_~tmp___0~2); 763#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 764#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 833#L407-1 assume !(0 != ~pumpRunning~0); 714#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 880#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1093#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1064#L132-3 assume !(0 == ~pumpRunning~0); 1057#L107 havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1056#L520-5 __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 1054#L454 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 925#L454-1 [2021-07-06 20:21:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:34,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:21:34,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:34,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183112213] [2021-07-06 20:21:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:34,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:34,476 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:34,522 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:34,540 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:34,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:34,542 INFO L82 PathProgramCache]: Analyzing trace with hash -407199801, now seen corresponding path program 1 times [2021-07-06 20:21:34,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:34,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746322236] [2021-07-06 20:21:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:34,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:21:34,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:34,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:21:34,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:21:34,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:21:34,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746322236] [2021-07-06 20:21:34,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746322236] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:21:34,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:21:34,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:21:34,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336905877] [2021-07-06 20:21:34,570 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:21:34,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:21:34,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:21:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:21:34,572 INFO L87 Difference]: Start difference. First operand 433 states and 643 transitions. cyclomatic complexity: 213 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) [2021-07-06 20:21:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:21:34,670 INFO L93 Difference]: Finished difference Result 432 states and 611 transitions. [2021-07-06 20:21:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:21:34,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 432 states and 611 transitions. [2021-07-06 20:21:34,674 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 299 [2021-07-06 20:21:34,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 432 states to 432 states and 611 transitions. [2021-07-06 20:21:34,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 432 [2021-07-06 20:21:34,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 432 [2021-07-06 20:21:34,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 432 states and 611 transitions. [2021-07-06 20:21:34,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:21:34,677 INFO L681 BuchiCegarLoop]: Abstraction has 432 states and 611 transitions. [2021-07-06 20:21:34,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states and 611 transitions. [2021-07-06 20:21:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2021-07-06 20:21:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 432 states have (on average 1.4143518518518519) internal successors, (611), 431 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:21:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 611 transitions. [2021-07-06 20:21:34,693 INFO L704 BuchiCegarLoop]: Abstraction has 432 states and 611 transitions. [2021-07-06 20:21:34,694 INFO L587 BuchiCegarLoop]: Abstraction has 432 states and 611 transitions. [2021-07-06 20:21:34,694 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:21:34,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 432 states and 611 transitions. [2021-07-06 20:21:34,695 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 299 [2021-07-06 20:21:34,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:34,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:34,697 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:34,698 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] [2021-07-06 20:21:34,698 INFO L791 eck$LassoCheckResult]: Stem: 1755#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1560#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 1561#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; 1669#L75 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 1697#L663 assume 0 != main_~tmp~8; 1719#L639 ~methAndRunningLastTime~0 := 0; 1720#L443 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1763#L454-1 [2021-07-06 20:21:34,699 INFO L793 eck$LassoCheckResult]: Loop: 1763#L454-1 assume !false; 1816#L370 assume test_~splverifierCounter~0 < 4; 1815#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 1792#L379 assume !(0 != test_~tmp~6); 1791#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 1787#L389 assume !(0 != test_~tmp___0~2); 1786#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 1764#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1766#L407-1 assume !(0 != ~pumpRunning~0); 1677#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1678#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1771#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1760#L132-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1584#L560-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1585#L565-3 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 1660#L303-9 assume !(0 != isHighWaterLevel_~tmp~4);isHighWaterLevel_~tmp___0~0 := 1; 1679#L303-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1661#L309-3 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 1575#L136-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1576#L107 havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1803#L520-5 __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 1804#L454 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 1763#L454-1 [2021-07-06 20:21:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:34,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:21:34,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:34,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602219422] [2021-07-06 20:21:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:34,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:34,749 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:34,796 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:34,805 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:34,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1236648395, now seen corresponding path program 1 times [2021-07-06 20:21:34,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:34,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123480421] [2021-07-06 20:21:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:34,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:21:34,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:34,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:21:34,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:21:34,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:34,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:21:34,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:21:34,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123480421] [2021-07-06 20:21:34,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123480421] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:21:34,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:21:34,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 20:21:34,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767857321] [2021-07-06 20:21:34,834 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:21:34,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:21:34,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 20:21:34,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 20:21:34,835 INFO L87 Difference]: Start difference. First operand 432 states and 611 transitions. cyclomatic complexity: 182 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:21:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:21:34,946 INFO L93 Difference]: Finished difference Result 839 states and 1161 transitions. [2021-07-06 20:21:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 20:21:34,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 839 states and 1161 transitions. [2021-07-06 20:21:34,950 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 586 [2021-07-06 20:21:34,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 839 states to 839 states and 1161 transitions. [2021-07-06 20:21:34,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 839 [2021-07-06 20:21:34,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 839 [2021-07-06 20:21:34,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 839 states and 1161 transitions. [2021-07-06 20:21:34,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:21:34,955 INFO L681 BuchiCegarLoop]: Abstraction has 839 states and 1161 transitions. [2021-07-06 20:21:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states and 1161 transitions. [2021-07-06 20:21:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 468. [2021-07-06 20:21:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 468 states have (on average 1.3824786324786325) internal successors, (647), 467 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:21:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 647 transitions. [2021-07-06 20:21:34,963 INFO L704 BuchiCegarLoop]: Abstraction has 468 states and 647 transitions. [2021-07-06 20:21:34,963 INFO L587 BuchiCegarLoop]: Abstraction has 468 states and 647 transitions. [2021-07-06 20:21:34,963 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:21:34,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 468 states and 647 transitions. [2021-07-06 20:21:34,965 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 323 [2021-07-06 20:21:34,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:34,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:34,965 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:34,965 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] [2021-07-06 20:21:34,965 INFO L791 eck$LassoCheckResult]: Stem: 3054#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 2841#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 2842#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; 2964#L75 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 2990#L663 assume 0 != main_~tmp~8; 3016#L639 ~methAndRunningLastTime~0 := 0; 3017#L443 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3057#L454-1 [2021-07-06 20:21:34,966 INFO L793 eck$LassoCheckResult]: Loop: 3057#L454-1 assume !false; 3165#L370 assume test_~splverifierCounter~0 < 4; 3164#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 3163#L379 assume !(0 != test_~tmp~6); 3161#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 3160#L389 assume !(0 != test_~tmp___0~2); 3158#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 3060#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3062#L407-1 assume !(0 != ~pumpRunning~0); 3120#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 3153#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 3146#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 3151#L132-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 2869#L560-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 2870#L565-3 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 2951#L303-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 2970#L303-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 2952#L309-3 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 2860#L136-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2861#L107 havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 3171#L520-5 __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 3169#L454 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 3057#L454-1 [2021-07-06 20:21:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:34,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-07-06 20:21:34,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:34,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518811500] [2021-07-06 20:21:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:34,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:34,998 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:35,018 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:35,023 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:35,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:35,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1283311539, now seen corresponding path program 1 times [2021-07-06 20:21:35,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:35,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879177848] [2021-07-06 20:21:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:35,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:35,027 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:35,029 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:35,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:35,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:35,031 INFO L82 PathProgramCache]: Analyzing trace with hash 416127097, now seen corresponding path program 1 times [2021-07-06 20:21:35,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:35,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012691266] [2021-07-06 20:21:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:35,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:35,062 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:35,077 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:35,084 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:35,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:35,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-07-06 20:22:16,965 WARN L205 SmtUtils]: Spent 41.75 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:22:17,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:22:17,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:22:38,611 WARN L205 SmtUtils]: Spent 21.51 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:22:38,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:22:38 BoogieIcfgContainer [2021-07-06 20:22:38,748 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:22:38,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:22:38,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:22:38,751 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:22:38,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:21:33" (3/4) ... [2021-07-06 20:22:38,756 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:22:38,812 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:22:38,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:22:38,812 INFO L168 Benchmark]: Toolchain (without parser) took 66263.06 ms. Allocated memory was 54.5 MB in the beginning and 148.9 MB in the end (delta: 94.4 MB). Free memory was 30.6 MB in the beginning and 103.4 MB in the end (delta: -72.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:38,813 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 35.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:22:38,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.09 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 38.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:38,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.14 ms. Allocated memory is still 67.1 MB. Free memory was 38.6 MB in the beginning and 47.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:38,813 INFO L168 Benchmark]: Boogie Preprocessor took 66.78 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 43.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:38,814 INFO L168 Benchmark]: RCFGBuilder took 780.96 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 43.1 MB in the beginning and 51.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:38,814 INFO L168 Benchmark]: BuchiAutomizer took 64883.10 ms. Allocated memory was 81.8 MB in the beginning and 148.9 MB in the end (delta: 67.1 MB). Free memory was 51.4 MB in the beginning and 106.4 MB in the end (delta: -55.0 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:38,814 INFO L168 Benchmark]: Witness Printer took 63.42 ms. Allocated memory is still 148.9 MB. Free memory was 106.4 MB in the beginning and 103.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:38,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 35.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.09 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 38.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.14 ms. Allocated memory is still 67.1 MB. Free memory was 38.6 MB in the beginning and 47.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.78 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 43.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 780.96 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 43.1 MB in the beginning and 51.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 64883.10 ms. Allocated memory was 81.8 MB in the beginning and 148.9 MB in the end (delta: 67.1 MB). Free memory was 51.4 MB in the beginning and 106.4 MB in the end (delta: -55.0 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.1 GB. * Witness Printer took 63.42 ms. Allocated memory is still 148.9 MB. Free memory was 106.4 MB in the beginning and 103.4 MB in the end (delta: 3.0 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 468 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 64.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 64.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 61.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 373 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 468 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 862 SDtfs, 921 SDslu, 838 SDs, 0 SdLazy, 138 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 163.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 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: 369]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=8947} State at position 1 is {NULL=0, NULL=0, NULL=8947, NULL=8965, NULL=8956, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bdc7a7=0, NULL=0, NULL=8968, methaneLevelCritical=0, NULL=8953, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@674cc67d=0, retValue_acc=0, NULL=0, tmp=0, NULL=8962, NULL=0, tmp___1=0, NULL=0, NULL=8967, cleanupTimeShifts=4, NULL=8964, NULL=8950, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@560185ce=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4cf37600=71, waterLevel=1, NULL=0, NULL=8960, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@386c460c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@179c3c69=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20501b70=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2559f9e5=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=0, NULL=8973, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@96c52ad=0, NULL=0, tmp___0=0, NULL=8977, methAndRunningLastTime=0, NULL=8961, tmp=0, head=0, tmp=0, NULL=0, NULL=0, NULL=8976, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42c5973b=0, NULL=0, NULL=0, NULL=8958, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16072f5a=0, NULL=0, tmp___0=0, NULL=0, NULL=8975, NULL=0, NULL=0, tmp=0, NULL=8963, NULL=0, systemActive=1, NULL=8972, NULL=0, retValue_acc=0, \result=0, retValue_acc=0, NULL=8949, NULL=8974, \result=0, NULL=8957, NULL=0, NULL=0, NULL=8959, NULL=8954, NULL=8955, NULL=8951, retValue_acc=1, tmp___0=0, tmp___2=71, splverifierCounter=0, NULL=0, \result=0, NULL=8952, NULL=8969, NULL=0, NULL=0, NULL=8966, NULL=0, NULL=8948, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L92] int pumpRunning = 0; [L93] int systemActive = 1; [L437] int methAndRunningLastTime ; [L477] int waterLevel = 1; [L478] int methaneLevelCritical = 0; [L580] int cleanupTimeShifts = 4; [L846] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int retValue_acc ; [L655] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L661] tmp = valid_product() [L663] COND TRUE \read(tmp) [L442] methAndRunningLastTime = 0 [L360] int splverifierCounter ; [L361] int tmp ; [L362] int tmp___0 ; [L363] int tmp___1 ; [L364] int tmp___2 ; [L367] splverifierCounter = 0 Loop: [L369] COND TRUE 1 [L371] COND TRUE splverifierCounter < 4 [L377] tmp = __VERIFIER_nondet_int() [L379] COND FALSE !(\read(tmp)) [L387] tmp___0 = __VERIFIER_nondet_int() [L389] COND FALSE !(\read(tmp___0)) [L397] tmp___2 = __VERIFIER_nondet_int() [L399] COND TRUE \read(tmp___2) [L351] systemActive = 1 [L100] COND FALSE !(\read(pumpRunning)) [L107] COND TRUE \read(systemActive) [L181] int tmp ; [L184] COND FALSE !(\read(pumpRunning)) [L155] int tmp ; [L158] COND FALSE !(\read(pumpRunning)) [L129] int tmp ; [L132] COND TRUE ! pumpRunning [L295] int retValue_acc ; [L296] int tmp ; [L297] int tmp___0 ; [L557] int retValue_acc ; [L560] COND TRUE waterLevel < 2 [L561] retValue_acc = 1 [L562] return (retValue_acc); [L301] tmp = isHighWaterSensorDry() [L303] COND TRUE \read(tmp) [L304] tmp___0 = 0 [L308] retValue_acc = tmp___0 [L309] return (retValue_acc); [L134] tmp = isHighWaterLevel() [L136] COND FALSE !(\read(tmp)) [L447] int tmp ; [L448] int tmp___0 ; [L516] int retValue_acc ; [L519] retValue_acc = methaneLevelCritical [L520] return (retValue_acc); [L452] tmp = isMethaneLevelCritical() [L454] COND FALSE !(\read(tmp)) [L470] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:22:38,896 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...