./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3 --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 7ffd4fd7ca56e15df591ee4e16046444bceadcd7 ........................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:26:26,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:26:26,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:26:26,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:26:26,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:26:26,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:26:26,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:26:26,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:26:26,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:26:26,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:26:26,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:26:26,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:26:26,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:26:26,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:26:26,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:26:26,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:26:26,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:26:26,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:26:26,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:26:26,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:26:26,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:26:26,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:26:26,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:26:26,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:26:26,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:26:26,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:26:26,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:26:26,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:26:26,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:26:26,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:26:26,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:26:26,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:26:26,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:26:26,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:26:26,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:26:26,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:26:26,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:26:26,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:26:26,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:26:26,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:26:26,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:26:26,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-15 20:26:26,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:26:26,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:26:26,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:26:26,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:26:26,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:26:26,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:26:26,270 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:26:26,271 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-15 20:26:26,271 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-15 20:26:26,271 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-15 20:26:26,272 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-15 20:26:26,272 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-15 20:26:26,272 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-15 20:26:26,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:26:26,273 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:26:26,273 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 20:26:26,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:26:26,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:26:26,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:26:26,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-15 20:26:26,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-15 20:26:26,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-15 20:26:26,275 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:26:26,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:26:26,276 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-15 20:26:26,276 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:26:26,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-15 20:26:26,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:26:26,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:26:26,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:26:26,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:26:26,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:26:26,280 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-15 20:26:26,280 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ffd4fd7ca56e15df591ee4e16046444bceadcd7 [2021-10-15 20:26:26,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:26:26,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:26:26,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:26:26,620 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:26:26,621 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:26:26,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec2_product03.cil.c [2021-10-15 20:26:26,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/data/328d37539/0621895431bc4f648f2f98729fbf1ea2/FLAG2d103bffc [2021-10-15 20:26:27,389 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:26:27,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/sv-benchmarks/c/product-lines/minepump_spec2_product03.cil.c [2021-10-15 20:26:27,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/data/328d37539/0621895431bc4f648f2f98729fbf1ea2/FLAG2d103bffc [2021-10-15 20:26:27,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/data/328d37539/0621895431bc4f648f2f98729fbf1ea2 [2021-10-15 20:26:27,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:26:27,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:26:27,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:26:27,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:26:27,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:26:27,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:26:27" (1/1) ... [2021-10-15 20:26:27,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72601f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:27, skipping insertion in model container [2021-10-15 20:26:27,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:26:27" (1/1) ... [2021-10-15 20:26:27,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:26:27,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:26:28,326 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/sv-benchmarks/c/product-lines/minepump_spec2_product03.cil.c[17319,17332] [2021-10-15 20:26:28,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:26:28,345 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:26:28,456 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/sv-benchmarks/c/product-lines/minepump_spec2_product03.cil.c[17319,17332] [2021-10-15 20:26:28,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:26:28,482 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:26:28,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28 WrapperNode [2021-10-15 20:26:28,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:26:28,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:26:28,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:26:28,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:26:28,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:26:28,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:26:28,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:26:28,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:26:28,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:26:28,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:26:28,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:26:28,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:26:28,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (1/1) ... [2021-10-15 20:26:28,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:26:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:26:28,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:26:28,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-15 20:26:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:26:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:26:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:26:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:26:29,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:26:29,921 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-10-15 20:26:29,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:26:29 BoogieIcfgContainer [2021-10-15 20:26:29,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:26:29,925 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-15 20:26:29,925 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-15 20:26:29,930 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-15 20:26:29,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:26:29,931 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 08:26:27" (1/3) ... [2021-10-15 20:26:29,932 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@174512f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 08:26:29, skipping insertion in model container [2021-10-15 20:26:29,933 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:26:29,933 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:26:28" (2/3) ... [2021-10-15 20:26:29,934 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@174512f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 08:26:29, skipping insertion in model container [2021-10-15 20:26:29,934 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:26:29,934 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:26:29" (3/3) ... [2021-10-15 20:26:29,936 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product03.cil.c [2021-10-15 20:26:29,987 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-15 20:26:29,987 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-15 20:26:29,988 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-15 20:26:29,988 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-15 20:26:29,988 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-15 20:26:29,988 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-15 20:26:29,988 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-15 20:26:29,989 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-15 20:26:30,008 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 60 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 59 states have internal predecessors, (91), 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) [2021-10-15 20:26:30,033 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 37 [2021-10-15 20:26:30,033 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:26:30,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:26:30,042 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:26:30,042 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:26:30,042 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-15 20:26:30,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 60 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 59 states have internal predecessors, (91), 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) [2021-10-15 20:26:30,049 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 37 [2021-10-15 20:26:30,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:26:30,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:26:30,051 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:26:30,051 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:26:30,057 INFO L791 eck$LassoCheckResult]: Stem: 50#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string11.base, #t~string11.offset, 1);call write~init~int(110, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 2 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(102, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(102, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 3 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string15.base, #t~string15.offset, 1);call write~init~int(80, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(117, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(109, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(112, #t~string15.base, 4 + #t~string15.offset, 1);call write~init~int(58, #t~string15.base, 5 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 6 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string21.base, #t~string21.offset, 1);call write~init~int(32, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string23.base, #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 1 + #t~string23.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(13);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(77, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(101, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(116, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(104, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string33.base, #t~string33.offset, 1);call write~init~int(82, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(73, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(84, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 4 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(75, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0; 38#L-1true havoc main_#res;havoc main_#t~ret39, main_~retValue_acc~6, main_~tmp~1;havoc main_~retValue_acc~6;havoc main_~tmp~1; 18#L358true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 42#L366true main_#t~ret39 := valid_product_#res;main_~tmp~1 := main_#t~ret39;havoc main_#t~ret39; 6#L455true assume 0 != main_~tmp~1; 21#L430true ~methAndRunningLastTime~0 := 0; 45#L842true havoc test_#t~nondet24, test_#t~nondet25, test_#t~nondet26, test_#t~nondet27, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 53#L853-1true [2021-10-15 20:26:30,058 INFO L793 eck$LassoCheckResult]: Loop: 53#L853-1true assume !false; 58#L196true assume test_~splverifierCounter~0 < 4; 12#L197true test_~tmp~0 := test_#t~nondet24;havoc test_#t~nondet24; 13#L205true assume !(0 != test_~tmp~0); 51#L205-1true test_~tmp___0~0 := test_#t~nondet25;havoc test_#t~nondet25; 59#L215true assume !(0 != test_~tmp___0~0); 10#L215-1true test_~tmp___2~0 := test_#t~nondet26;havoc test_#t~nondet26; 37#L225true assume 0 != test_~tmp___2~0; 44#L231-1true assume !(0 != ~pumpRunning~0); 48#L67true assume !(0 != ~systemActive~0); 8#L74true havoc __utac_acc__Specification2_spec__2_#t~ret75, __utac_acc__Specification2_spec__2_#t~ret76, __utac_acc__Specification2_spec__2_~tmp~5, __utac_acc__Specification2_spec__2_~tmp___0~1;havoc __utac_acc__Specification2_spec__2_~tmp~5;havoc __utac_acc__Specification2_spec__2_~tmp___0~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 52#L296true __utac_acc__Specification2_spec__2_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~5 := __utac_acc__Specification2_spec__2_#t~ret75;havoc __utac_acc__Specification2_spec__2_#t~ret75; 43#L853true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5);~methAndRunningLastTime~0 := 0; 53#L853-1true [2021-10-15 20:26:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:26:30,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-15 20:26:30,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:26:30,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940796686] [2021-10-15 20:26:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:26:30,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:26:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:30,454 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:26:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:30,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:26:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:26:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash 10387603, now seen corresponding path program 1 times [2021-10-15 20:26:30,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:26:30,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088062457] [2021-10-15 20:26:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:26:30,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:26:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:30,723 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:26:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:30,734 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:26:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:26:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash 843684109, now seen corresponding path program 1 times [2021-10-15 20:26:30,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:26:30,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078287894] [2021-10-15 20:26:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:26:30,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:26:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:26:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:26:30,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:26:30,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078287894] [2021-10-15 20:26:30,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078287894] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:26:30,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:26:30,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:26:30,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539044208] [2021-10-15 20:26:31,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:26:31,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:26:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:26:31,151 INFO L87 Difference]: Start difference. First operand has 60 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 59 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-10-15 20:26:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:26:31,419 INFO L93 Difference]: Finished difference Result 166 states and 229 transitions. [2021-10-15 20:26:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:26:31,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 166 states and 229 transitions. [2021-10-15 20:26:31,437 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 103 [2021-10-15 20:26:31,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 166 states to 145 states and 208 transitions. [2021-10-15 20:26:31,456 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 145 [2021-10-15 20:26:31,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 145 [2021-10-15 20:26:31,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 208 transitions. [2021-10-15 20:26:31,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:26:31,464 INFO L681 BuchiCegarLoop]: Abstraction has 145 states and 208 transitions. [2021-10-15 20:26:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 208 transitions. [2021-10-15 20:26:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 97. [2021-10-15 20:26:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 97 states have (on average 1.4329896907216495) internal successors, (139), 96 states have internal predecessors, (139), 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) [2021-10-15 20:26:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2021-10-15 20:26:31,533 INFO L704 BuchiCegarLoop]: Abstraction has 97 states and 139 transitions. [2021-10-15 20:26:31,534 INFO L587 BuchiCegarLoop]: Abstraction has 97 states and 139 transitions. [2021-10-15 20:26:31,535 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-15 20:26:31,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 139 transitions. [2021-10-15 20:26:31,544 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 68 [2021-10-15 20:26:31,545 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:26:31,545 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:26:31,546 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:26:31,547 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:26:31,547 INFO L791 eck$LassoCheckResult]: Stem: 295#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string11.base, #t~string11.offset, 1);call write~init~int(110, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 2 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(102, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(102, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 3 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string15.base, #t~string15.offset, 1);call write~init~int(80, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(117, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(109, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(112, #t~string15.base, 4 + #t~string15.offset, 1);call write~init~int(58, #t~string15.base, 5 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 6 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string21.base, #t~string21.offset, 1);call write~init~int(32, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string23.base, #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 1 + #t~string23.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(13);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(77, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(101, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(116, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(104, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string33.base, #t~string33.offset, 1);call write~init~int(82, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(73, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(84, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 4 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(75, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0; 290#L-1 havoc main_#res;havoc main_#t~ret39, main_~retValue_acc~6, main_~tmp~1;havoc main_~retValue_acc~6;havoc main_~tmp~1; 273#L358 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 274#L366 main_#t~ret39 := valid_product_#res;main_~tmp~1 := main_#t~ret39;havoc main_#t~ret39; 248#L455 assume 0 != main_~tmp~1; 249#L430 ~methAndRunningLastTime~0 := 0; 279#L842 havoc test_#t~nondet24, test_#t~nondet25, test_#t~nondet26, test_#t~nondet27, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 265#L853-1 [2021-10-15 20:26:31,549 INFO L793 eck$LassoCheckResult]: Loop: 265#L853-1 assume !false; 297#L196 assume test_~splverifierCounter~0 < 4; 260#L197 test_~tmp~0 := test_#t~nondet24;havoc test_#t~nondet24; 261#L205 assume !(0 != test_~tmp~0); 263#L205-1 test_~tmp___0~0 := test_#t~nondet25;havoc test_#t~nondet25; 296#L215 assume !(0 != test_~tmp___0~0); 254#L215-1 test_~tmp___2~0 := test_#t~nondet26;havoc test_#t~nondet26; 255#L225 assume 0 != test_~tmp___2~0; 272#L231-1 assume !(0 != ~pumpRunning~0); 245#L67 assume 0 != ~systemActive~0; 252#L74 havoc __utac_acc__Specification2_spec__2_#t~ret75, __utac_acc__Specification2_spec__2_#t~ret76, __utac_acc__Specification2_spec__2_~tmp~5, __utac_acc__Specification2_spec__2_~tmp___0~1;havoc __utac_acc__Specification2_spec__2_~tmp~5;havoc __utac_acc__Specification2_spec__2_~tmp___0~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 253#L296 __utac_acc__Specification2_spec__2_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~5 := __utac_acc__Specification2_spec__2_#t~ret75;havoc __utac_acc__Specification2_spec__2_#t~ret75; 292#L853 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5);~methAndRunningLastTime~0 := 0; 265#L853-1 [2021-10-15 20:26:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:26:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-15 20:26:31,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:26:31,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419709933] [2021-10-15 20:26:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:26:31,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:26:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:31,654 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:26:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:31,727 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:26:31,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:26:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash 10298230, now seen corresponding path program 1 times [2021-10-15 20:26:31,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:26:31,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157792213] [2021-10-15 20:26:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:26:31,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:26:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:31,736 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:26:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:31,745 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:26:31,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:26:31,747 INFO L82 PathProgramCache]: Analyzing trace with hash 843594736, now seen corresponding path program 1 times [2021-10-15 20:26:31,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:26:31,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729761966] [2021-10-15 20:26:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:26:31,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:26:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:31,856 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:26:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:26:31,966 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:27:47,089 WARN L207 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-15 20:28:58,149 WARN L207 SmtUtils]: Spent 34.43 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-15 20:28:58,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 08:28:58 BoogieIcfgContainer [2021-10-15 20:28:58,314 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-15 20:28:58,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:28:58,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:28:58,315 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:28:58,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:26:29" (3/4) ... [2021-10-15 20:28:58,318 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-15 20:28:58,368 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:28:58,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:28:58,371 INFO L168 Benchmark]: Toolchain (without parser) took 150656.33 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 63.0 MB in the beginning and 27.4 MB in the end (delta: 35.6 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:28:58,371 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 96.5 MB. Free memory was 53.0 MB in the beginning and 52.9 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:28:58,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.43 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 62.8 MB in the beginning and 98.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:28:58,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.50 ms. Allocated memory is still 130.0 MB. Free memory was 98.1 MB in the beginning and 95.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:28:58,373 INFO L168 Benchmark]: Boogie Preprocessor took 62.78 ms. Allocated memory is still 130.0 MB. Free memory was 95.3 MB in the beginning and 93.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:28:58,373 INFO L168 Benchmark]: RCFGBuilder took 1270.81 ms. Allocated memory is still 130.0 MB. Free memory was 93.2 MB in the beginning and 58.9 MB in the end (delta: 34.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:28:58,374 INFO L168 Benchmark]: BuchiAutomizer took 148388.77 ms. Allocated memory is still 130.0 MB. Free memory was 58.9 MB in the beginning and 30.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:28:58,374 INFO L168 Benchmark]: Witness Printer took 54.15 ms. Allocated memory is still 130.0 MB. Free memory was 29.5 MB in the beginning and 27.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:28:58,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 96.5 MB. Free memory was 53.0 MB in the beginning and 52.9 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 766.43 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 62.8 MB in the beginning and 98.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.50 ms. Allocated memory is still 130.0 MB. Free memory was 98.1 MB in the beginning and 95.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.78 ms. Allocated memory is still 130.0 MB. Free memory was 95.3 MB in the beginning and 93.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1270.81 ms. Allocated memory is still 130.0 MB. Free memory was 93.2 MB in the beginning and 58.9 MB in the end (delta: 34.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 148388.77 ms. Allocated memory is still 130.0 MB. Free memory was 58.9 MB in the beginning and 30.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. * Witness Printer took 54.15 ms. Allocated memory is still 130.0 MB. Free memory was 29.5 MB in the beginning and 27.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 97 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 148.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 147.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 51.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 97 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 78 SDtfs, 355 SDslu, 354 SDs, 0 SdLazy, 35 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 166.4ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 195]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11210} State at position 1 is {NULL=11220, NULL=0, NULL=0, NULL=0, NULL=11210, NULL=11216, retValue_acc=0, NULL=0, NULL=0, NULL=11217, NULL=11214, NULL=11237, methaneLevelCritical=0, NULL=11231, NULL=0, NULL=0, NULL=11219, NULL=11215, NULL=0, tmp___1=0, NULL=11224, NULL=11235, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@262868a8=0, cleanupTimeShifts=4, tmp=0, NULL=11227, NULL=11222, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=11238, NULL=11225, retValue_acc=0, tmp___0=0, NULL=11226, NULL=0, NULL=11236, \result=1, head=0, pumpRunning=0, \result=0, NULL=11230, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29418912=0, NULL=0, tmp=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f7e3f74=68, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19974587=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@166a75de=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16a65db=0, NULL=11232, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b8651f1=0, retValue_acc=1, NULL=11213, NULL=11229, NULL=0, NULL=0, NULL=11234, tmp___2=68, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, NULL=0, methAndRunningLastTime=0, \result=0, NULL=11228, NULL=11233, NULL=11211, NULL=11212, head=0, NULL=11223, NULL=0, NULL=0, NULL=0, NULL=0, NULL=11218, NULL=11221, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L59] int pumpRunning = 0; [L60] int systemActive = 1; [L253] int waterLevel = 1; [L254] int methaneLevelCritical = 0; [L371] int cleanupTimeShifts = 4; [L638] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int methAndRunningLastTime ; [L446] int retValue_acc ; [L447] int tmp ; [L362] int retValue_acc ; [L365] retValue_acc = 1 [L366] return (retValue_acc); [L453] tmp = valid_product() [L455] COND TRUE \read(tmp) [L841] methAndRunningLastTime = 0 [L186] int splverifierCounter ; [L187] int tmp ; [L188] int tmp___0 ; [L189] int tmp___1 ; [L190] int tmp___2 ; [L193] splverifierCounter = 0 Loop: [L195] COND TRUE 1 [L197] COND TRUE splverifierCounter < 4 [L203] tmp = __VERIFIER_nondet_int() [L205] COND FALSE !(\read(tmp)) [L213] tmp___0 = __VERIFIER_nondet_int() [L215] COND FALSE !(\read(tmp___0)) [L223] tmp___2 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp___2) [L67] COND FALSE !(\read(pumpRunning)) [L74] COND TRUE \read(systemActive) [L846] int tmp ; [L847] int tmp___0 ; [L292] int retValue_acc ; [L295] retValue_acc = methaneLevelCritical [L296] return (retValue_acc); [L851] tmp = isMethaneLevelCritical() [L853] COND FALSE !(\read(tmp)) [L869] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-15 20:28:58,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e8daeb-3a84-455f-a45c-776d79887319/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...