./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y --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 1fbaddd6fd169b7b48095dcc33030c6e5a8d967c7f37e463c0b8f5252997cc40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:13:03,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:13:03,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:13:03,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:13:03,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:13:03,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:13:03,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:13:03,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:13:03,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:13:03,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:13:03,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:13:03,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:13:03,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:13:03,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:13:03,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:13:03,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:13:03,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:13:03,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:13:03,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:13:03,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:13:03,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:13:03,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:13:03,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:13:03,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:13:03,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:13:03,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:13:03,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:13:03,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:13:03,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:13:03,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:13:03,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:13:03,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:13:03,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:13:03,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:13:03,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:13:03,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:13:03,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:13:03,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:13:03,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:13:03,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:13:03,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:13:03,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-13 18:13:03,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:13:03,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:13:03,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:13:03,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:13:03,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:13:03,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:13:03,748 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:13:03,748 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-13 18:13:03,748 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-13 18:13:03,749 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-13 18:13:03,749 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-13 18:13:03,749 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-13 18:13:03,750 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-13 18:13:03,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:13:03,750 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:13:03,750 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:13:03,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:13:03,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:13:03,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:13:03,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-13 18:13:03,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-13 18:13:03,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-13 18:13:03,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:13:03,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:13:03,753 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-13 18:13:03,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:13:03,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-13 18:13:03,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:13:03,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:13:03,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:13:03,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:13:03,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:13:03,757 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-13 18:13:03,757 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_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fbaddd6fd169b7b48095dcc33030c6e5a8d967c7f37e463c0b8f5252997cc40 [2021-11-13 18:13:04,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:13:04,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:13:04,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:13:04,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:13:04,184 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:13:04,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/product-lines/minepump_spec1_product10.cil.c [2021-11-13 18:13:04,332 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/data/8bfb98cd9/966c67e0c7e6416e9547a4d877c013af/FLAG61e9db1eb [2021-11-13 18:13:04,964 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:13:04,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/sv-benchmarks/c/product-lines/minepump_spec1_product10.cil.c [2021-11-13 18:13:04,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/data/8bfb98cd9/966c67e0c7e6416e9547a4d877c013af/FLAG61e9db1eb [2021-11-13 18:13:05,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/data/8bfb98cd9/966c67e0c7e6416e9547a4d877c013af [2021-11-13 18:13:05,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:13:05,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:13:05,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:13:05,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:13:05,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:13:05,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:05,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de32fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05, skipping insertion in model container [2021-11-13 18:13:05,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:05,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:13:05,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:13:05,579 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_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/sv-benchmarks/c/product-lines/minepump_spec1_product10.cil.c[1605,1618] [2021-11-13 18:13:05,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:13:05,861 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:13:05,877 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_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/sv-benchmarks/c/product-lines/minepump_spec1_product10.cil.c[1605,1618] [2021-11-13 18:13:05,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:13:05,970 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:13:05,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05 WrapperNode [2021-11-13 18:13:05,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:13:05,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:13:05,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:13:05,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:13:05,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:13:06,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:13:06,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:13:06,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:13:06,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:13:06,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:13:06,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:13:06,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:13:06,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (1/1) ... [2021-11-13 18:13:06,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:13:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:13:06,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:13:06,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-13 18:13:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:13:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:13:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:13:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:13:07,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:13:07,315 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 18:13:07,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:13:07 BoogieIcfgContainer [2021-11-13 18:13:07,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:13:07,320 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-13 18:13:07,320 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-13 18:13:07,324 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-13 18:13:07,325 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:13:07,326 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 06:13:05" (1/3) ... [2021-11-13 18:13:07,327 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24677325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:13:07, skipping insertion in model container [2021-11-13 18:13:07,328 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:13:07,328 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:13:05" (2/3) ... [2021-11-13 18:13:07,328 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24677325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:13:07, skipping insertion in model container [2021-11-13 18:13:07,329 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:13:07,329 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:13:07" (3/3) ... [2021-11-13 18:13:07,330 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product10.cil.c [2021-11-13 18:13:07,388 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-13 18:13:07,388 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-13 18:13:07,389 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-13 18:13:07,389 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-13 18:13:07,389 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-13 18:13:07,389 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-13 18:13:07,389 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-13 18:13:07,389 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-13 18:13:07,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 76 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 75 states have internal predecessors, (103), 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) [2021-11-13 18:13:07,442 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-11-13 18:13:07,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:13:07,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:13:07,451 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:07,451 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:07,451 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-13 18:13:07,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 76 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 75 states have internal predecessors, (103), 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) [2021-11-13 18:13:07,459 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-11-13 18:13:07,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:13:07,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:13:07,461 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:07,461 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:07,468 INFO L791 eck$LassoCheckResult]: Stem: 65#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 52#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret21#1, main_~retValue_acc~2#1, main_~tmp~1#1;havoc main_~retValue_acc~2#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 15#L866true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 61#L859true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 17#L874true main_#t~ret21#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret21#1;havoc main_#t~ret21#1; 27#L301true assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 53#L275true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 18#L158-2true [2021-11-13 18:13:07,469 INFO L793 eck$LassoCheckResult]: Loop: 18#L158-2true assume !false; 10#L159true assume test_~splverifierCounter~0#1 < 4; 29#L160true test_~tmp~0#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 5#L168true assume !(0 != test_~tmp~0#1); 12#L168-2true test_~tmp___0~0#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 38#L178true assume !(0 != test_~tmp___0~0#1); 13#L178-2true test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 21#L188true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 25#L814true assume { :end_inline_startSystem } true; 70#L196-2true assume { :begin_inline_timeShift } true; 48#L692true assume !(0 != ~pumpRunning~0); 34#L692-2true assume !(0 != ~systemActive~0); 24#L699-1true assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret75#1, __utac_acc__Specification1_spec__1_#t~ret76#1, __utac_acc__Specification1_spec__1_~tmp~6#1, __utac_acc__Specification1_spec__1_~tmp___0~1#1;havoc __utac_acc__Specification1_spec__1_~tmp~6#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 28#L108true __utac_acc__Specification1_spec__1_#t~ret75#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~6#1 := __utac_acc__Specification1_spec__1_#t~ret75#1;havoc __utac_acc__Specification1_spec__1_#t~ret75#1; 62#L826true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6#1); 63#L826-1true assume { :end_inline___utac_acc__Specification1_spec__1 } true; 58#L709true assume { :end_inline_timeShift } true; 18#L158-2true [2021-11-13 18:13:07,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:07,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-11-13 18:13:07,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:07,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888198083] [2021-11-13 18:13:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:07,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:13:07,822 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:13:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:13:08,081 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:13:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:08,085 INFO L85 PathProgramCache]: Analyzing trace with hash 289308929, now seen corresponding path program 1 times [2021-11-13 18:13:08,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:08,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140484182] [2021-11-13 18:13:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:08,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:13:08,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:13:08,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140484182] [2021-11-13 18:13:08,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140484182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:08,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:08,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:13:08,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140122482] [2021-11-13 18:13:08,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:08,202 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:13:08,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:13:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:13:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:13:08,257 INFO L87 Difference]: Start difference. First operand has 76 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 75 states have internal predecessors, (103), 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 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-13 18:13:08,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:08,337 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2021-11-13 18:13:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:13:08,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 90 transitions. [2021-11-13 18:13:08,361 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 43 [2021-11-13 18:13:08,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 63 states and 79 transitions. [2021-11-13 18:13:08,373 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2021-11-13 18:13:08,374 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 63 [2021-11-13 18:13:08,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 79 transitions. [2021-11-13 18:13:08,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:13:08,376 INFO L681 BuchiCegarLoop]: Abstraction has 63 states and 79 transitions. [2021-11-13 18:13:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 79 transitions. [2021-11-13 18:13:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-13 18:13:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.253968253968254) internal successors, (79), 62 states have internal predecessors, (79), 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) [2021-11-13 18:13:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2021-11-13 18:13:08,415 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 79 transitions. [2021-11-13 18:13:08,415 INFO L587 BuchiCegarLoop]: Abstraction has 63 states and 79 transitions. [2021-11-13 18:13:08,415 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-13 18:13:08,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 79 transitions. [2021-11-13 18:13:08,420 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 43 [2021-11-13 18:13:08,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:13:08,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:13:08,422 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:08,422 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:08,422 INFO L791 eck$LassoCheckResult]: Stem: 217#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 214#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret21#1, main_~retValue_acc~2#1, main_~tmp~1#1;havoc main_~retValue_acc~2#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 175#L866 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 176#L859 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 177#L874 main_#t~ret21#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret21#1;havoc main_#t~ret21#1; 178#L301 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 195#L275 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 179#L158-2 [2021-11-13 18:13:08,423 INFO L793 eck$LassoCheckResult]: Loop: 179#L158-2 assume !false; 169#L159 assume test_~splverifierCounter~0#1 < 4; 170#L160 test_~tmp~0#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 160#L168 assume !(0 != test_~tmp~0#1); 162#L168-2 test_~tmp___0~0#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 172#L178 assume !(0 != test_~tmp___0~0#1); 173#L178-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 174#L188 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet20#1;havoc test_#t~nondet20#1; 184#L196 assume 0 != test_~tmp___1~0#1; 191#L196-2 assume { :begin_inline_timeShift } true; 211#L692 assume !(0 != ~pumpRunning~0); 201#L692-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true; 202#L716 assume { :end_inline_processEnvironment } true; 189#L699-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret75#1, __utac_acc__Specification1_spec__1_#t~ret76#1, __utac_acc__Specification1_spec__1_~tmp~6#1, __utac_acc__Specification1_spec__1_~tmp___0~1#1;havoc __utac_acc__Specification1_spec__1_~tmp~6#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 190#L108 __utac_acc__Specification1_spec__1_#t~ret75#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~6#1 := __utac_acc__Specification1_spec__1_#t~ret75#1;havoc __utac_acc__Specification1_spec__1_#t~ret75#1; 194#L826 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6#1); 210#L826-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 216#L709 assume { :end_inline_timeShift } true; 179#L158-2 [2021-11-13 18:13:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:08,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-11-13 18:13:08,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:08,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129593205] [2021-11-13 18:13:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:08,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:13:08,523 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:13:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:13:08,691 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:13:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:08,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1426283493, now seen corresponding path program 1 times [2021-11-13 18:13:08,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:08,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772369720] [2021-11-13 18:13:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:08,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:13:08,716 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:13:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:13:08,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:13:08,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1686042455, now seen corresponding path program 1 times [2021-11-13 18:13:08,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:08,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879287115] [2021-11-13 18:13:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:08,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:13:08,808 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:13:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:13:08,882 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:14:24,106 WARN L227 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 491 DAG size of output: 433 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-13 18:15:44,943 WARN L227 SmtUtils]: Spent 39.63s on a formula simplification that was a NOOP. DAG size: 433 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-13 18:15:45,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 06:15:45 BoogieIcfgContainer [2021-11-13 18:15:45,214 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-13 18:15:45,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:15:45,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:15:45,217 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:15:45,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:13:07" (3/4) ... [2021-11-13 18:15:45,223 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-13 18:15:45,309 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:15:45,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:15:45,324 INFO L158 Benchmark]: Toolchain (without parser) took 160062.36ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 70.1MB in the beginning and 64.6MB in the end (delta: 5.6MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2021-11-13 18:15:45,324 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 55.4MB in the beginning and 55.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:15:45,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.12ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 71.6MB in the end (delta: -1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:15:45,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.29ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 68.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:15:45,326 INFO L158 Benchmark]: Boogie Preprocessor took 40.50ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 67.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:15:45,327 INFO L158 Benchmark]: RCFGBuilder took 1191.48ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 67.1MB in the beginning and 86.5MB in the end (delta: -19.4MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2021-11-13 18:15:45,327 INFO L158 Benchmark]: BuchiAutomizer took 157894.44ms. Allocated memory is still 127.9MB. Free memory was 86.5MB in the beginning and 67.7MB in the end (delta: 18.8MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. [2021-11-13 18:15:45,328 INFO L158 Benchmark]: Witness Printer took 108.19ms. Allocated memory is still 127.9MB. Free memory was 67.7MB in the beginning and 64.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:15:45,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 55.4MB in the beginning and 55.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.12ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 71.6MB in the end (delta: -1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.29ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 68.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.50ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 67.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1191.48ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 67.1MB in the beginning and 86.5MB in the end (delta: -19.4MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 157894.44ms. Allocated memory is still 127.9MB. Free memory was 86.5MB in the beginning and 67.7MB in the end (delta: 18.8MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. * Witness Printer took 108.19ms. Allocated memory is still 127.9MB. Free memory was 67.7MB in the beginning and 64.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 3 locations. The remainder module has 63 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 157.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 157.4s. Construction of modules took 0.0s. 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 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 63 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 35.88ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 30.85ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 87 mSDtfsCounter, 3 mSolverCounterSat, 9.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 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: 158]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, NULL=0, NULL=0, NULL=0, NULL=14943, tmp___0=0, NULL=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=14931, NULL=14948, methaneLevelCritical=0, retValue_acc=1, NULL=14944, retValue_acc=0, NULL=14941, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f902938=0, NULL=0, NULL=14933, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f0eaa5d=0, NULL=0, NULL=0, NULL=0, tmp___2=0, tmp=0, cleanupTimeShifts=4, NULL=14940, NULL=14937, \result=0, NULL=14923, tmp=1, NULL=14936, NULL=14928, tmp___1=65, NULL=0, systemActive=1, waterLevel=1, NULL=0, tmp=0, NULL=0, NULL=0, NULL=14925, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26cc82b1=0, NULL=14938, NULL=0, NULL=0, NULL=0, NULL=14932, NULL=0, NULL=14922, head=0, pumpRunning=0, NULL=14930, NULL=14934, NULL=14942, tmp___0=0, NULL=14947, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22990fa3=0, \result=0, NULL=0, \result=1, NULL=0, NULL=14924, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28ff89e0=0, NULL=0, NULL=14946, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6788c7ae=65, NULL=14927, head=0, NULL=14949, NULL=14945, NULL=14939, NULL=14929, NULL=14926, NULL=14935, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41016d=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 158]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L65] int waterLevel = 1; [L66] int methaneLevelCritical = 0; [L215] int cleanupTimeShifts = 4; [L484] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L684] int pumpRunning = 0; [L685] int systemActive = 1; [L292] int retValue_acc ; [L293] int tmp ; [L297] FCALL select_helpers() [L298] FCALL select_features() [L299] CALL, EXPR valid_product() [L870] int retValue_acc ; [L873] retValue_acc = 1 [L874] return (retValue_acc); [L299] RET, EXPR valid_product() [L299] tmp = valid_product() [L301] COND TRUE \read(tmp) [L303] FCALL setup() [L304] CALL runTest() [L283] CALL test() [L149] int splverifierCounter ; [L150] int tmp ; [L151] int tmp___0 ; [L152] int tmp___1 ; [L153] int tmp___2 ; [L156] splverifierCounter = 0 Loop: [L158] COND TRUE 1 [L160] COND TRUE splverifierCounter < 4 [L166] tmp = __VERIFIER_nondet_int() [L168] COND FALSE !(\read(tmp)) [L176] tmp___0 = __VERIFIER_nondet_int() [L178] COND FALSE !(\read(tmp___0)) [L186] tmp___2 = __VERIFIER_nondet_int() [L188] COND FALSE !(\read(tmp___2)) [L194] tmp___1 = __VERIFIER_nondet_int() [L196] COND TRUE \read(tmp___1) [L203] CALL timeShift() [L692] COND FALSE !(\read(pumpRunning)) [L699] COND TRUE \read(systemActive) [L701] FCALL processEnvironment() [L707] CALL __utac_acc__Specification1_spec__1() [L819] int tmp ; [L820] int tmp___0 ; [L824] CALL, EXPR isMethaneLevelCritical() [L104] int retValue_acc ; [L107] retValue_acc = methaneLevelCritical [L108] return (retValue_acc); [L824] RET, EXPR isMethaneLevelCritical() [L824] tmp = isMethaneLevelCritical() [L826] COND FALSE !(\read(tmp)) [L707] RET __utac_acc__Specification1_spec__1() [L203] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-13 18:15:45,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2dce58-2bb4-4d3a-95c8-34a117a7906a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)