./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8 --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 e2e0ba6a085074e8295b6882a51ff57a646359fc725b3e12397ae540b49c1d93 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:50:44,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:50:44,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:50:45,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:50:45,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:50:45,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:50:45,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:50:45,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:50:45,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:50:45,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:50:45,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:50:45,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:50:45,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:50:45,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:50:45,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:50:45,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:50:45,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:50:45,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:50:45,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:50:45,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:50:45,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:50:45,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:50:45,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:50:45,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:50:45,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:50:45,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:50:45,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:50:45,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:50:45,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:50:45,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:50:45,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:50:45,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:50:45,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:50:45,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:50:45,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:50:45,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:50:45,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:50:45,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:50:45,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:50:45,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:50:45,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:50:45,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 19:50:45,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:50:45,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:50:45,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:50:45,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:50:45,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:50:45,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:50:45,062 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:50:45,062 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 19:50:45,063 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 19:50:45,063 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 19:50:45,063 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 19:50:45,063 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 19:50:45,063 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 19:50:45,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:50:45,064 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:50:45,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:50:45,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:50:45,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:50:45,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:50:45,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 19:50:45,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 19:50:45,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 19:50:45,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:50:45,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:50:45,066 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 19:50:45,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:50:45,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 19:50:45,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:50:45,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:50:45,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:50:45,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:50:45,068 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 19:50:45,068 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_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2e0ba6a085074e8295b6882a51ff57a646359fc725b3e12397ae540b49c1d93 [2022-12-13 19:50:45,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:50:45,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:50:45,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:50:45,269 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:50:45,269 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:50:45,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c [2022-12-13 19:50:47,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:50:48,061 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:50:48,062 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c [2022-12-13 19:50:48,072 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/data/4f96a8950/5a3a95315be84c2aba01758ff2be0613/FLAG2fb70a3a7 [2022-12-13 19:50:48,438 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/data/4f96a8950/5a3a95315be84c2aba01758ff2be0613 [2022-12-13 19:50:48,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:50:48,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:50:48,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:50:48,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:50:48,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:50:48,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4bcca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48, skipping insertion in model container [2022-12-13 19:50:48,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:50:48,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:50:48,624 WARN L237 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_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c[13988,14001] [2022-12-13 19:50:48,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:50:48,643 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:50:48,684 WARN L237 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_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c[13988,14001] [2022-12-13 19:50:48,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:50:48,711 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:50:48,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48 WrapperNode [2022-12-13 19:50:48,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:50:48,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:50:48,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:50:48,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:50:48,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,760 INFO L138 Inliner]: procedures = 52, calls = 94, calls flagged for inlining = 47, calls inlined = 50, statements flattened = 366 [2022-12-13 19:50:48,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:50:48,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:50:48,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:50:48,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:50:48,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:50:48,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:50:48,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:50:48,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:50:48,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (1/1) ... [2022-12-13 19:50:48,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:50:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:48,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:50:48,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 19:50:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:50:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:50:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:50:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:50:48,913 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:50:48,915 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:50:49,165 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:50:49,172 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:50:49,172 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 19:50:49,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:50:49 BoogieIcfgContainer [2022-12-13 19:50:49,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:50:49,175 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 19:50:49,175 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 19:50:49,178 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 19:50:49,179 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:50:49,179 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 07:50:48" (1/3) ... [2022-12-13 19:50:49,180 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c5b73c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:50:49, skipping insertion in model container [2022-12-13 19:50:49,180 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:50:49,180 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:48" (2/3) ... [2022-12-13 19:50:49,181 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c5b73c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:50:49, skipping insertion in model container [2022-12-13 19:50:49,181 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:50:49,181 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:50:49" (3/3) ... [2022-12-13 19:50:49,182 INFO L332 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product33.cil.c [2022-12-13 19:50:49,234 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 19:50:49,234 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 19:50:49,234 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 19:50:49,234 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 19:50:49,234 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 19:50:49,234 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 19:50:49,235 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 19:50:49,235 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 19:50:49,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 111 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 110 states have internal predecessors, (153), 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) [2022-12-13 19:50:49,256 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 70 [2022-12-13 19:50:49,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:50:49,256 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:50:49,261 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:49,261 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:49,261 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 19:50:49,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 111 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 110 states have internal predecessors, (153), 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) [2022-12-13 19:50:49,269 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 70 [2022-12-13 19:50:49,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:50:49,270 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:50:49,271 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:49,271 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:49,276 INFO L748 eck$LassoCheckResult]: Stem: 32#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 43#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~3#1, main_~tmp~0#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 25#select_helpers_returnLabel#1true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 95#select_features_returnLabel#1true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 87#valid_product_returnLabel#1true main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 28#L239true assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 74#setup_returnLabel#1true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet33#1, test_#t~nondet34#1, test_#t~nondet35#1, test_#t~nondet36#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 15#L638-2true [2022-12-13 19:50:49,276 INFO L750 eck$LassoCheckResult]: Loop: 15#L638-2true assume !false; 37#L639true assume test_~splverifierCounter~0#1 < 4; 33#L640true test_~tmp~4#1 := test_#t~nondet33#1;havoc test_#t~nondet33#1; 111#L648true assume !(0 != test_~tmp~4#1); 13#L648-2true test_~tmp___0~0#1 := test_#t~nondet34#1;havoc test_#t~nondet34#1; 26#L658true assume !(0 != test_~tmp___0~0#1); 96#L658-2true test_~tmp___2~0#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 34#L668true assume 0 != test_~tmp___2~0#1; 55#L674-2true assume { :begin_inline_timeShift } true; 58#L704true assume !(0 != ~pumpRunning~0); 45#L704-2true assume !(0 != ~systemActive~0); 99#L711-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret48#1, __utac_acc__Specification3_spec__1_#t~ret49#1, __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_~tmp~7#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~7#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#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; 108#isMethaneLevelCritical_returnLabel#1true __utac_acc__Specification3_spec__1_#t~ret48#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~7#1 := __utac_acc__Specification3_spec__1_#t~ret48#1;havoc __utac_acc__Specification3_spec__1_#t~ret48#1; 79#L858true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7#1; 78#L864-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 68#timeShift_returnLabel#1true assume { :end_inline_timeShift } true; 15#L638-2true [2022-12-13 19:50:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:49,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2022-12-13 19:50:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373303850] [2022-12-13 19:50:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:49,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:49,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash -680982122, now seen corresponding path program 1 times [2022-12-13 19:50:49,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:49,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488687711] [2022-12-13 19:50:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:49,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:49,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:49,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash 674436954, now seen corresponding path program 1 times [2022-12-13 19:50:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:49,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235150851] [2022-12-13 19:50:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:49,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:49,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235150851] [2022-12-13 19:50:49,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235150851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:49,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:49,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:50:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658548979] [2022-12-13 19:50:49,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:50:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:50:49,685 INFO L87 Difference]: Start difference. First operand has 111 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 110 states have internal predecessors, (153), 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 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-12-13 19:50:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:49,736 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2022-12-13 19:50:49,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 108 states and 139 transitions. [2022-12-13 19:50:49,740 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2022-12-13 19:50:49,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 108 states to 98 states and 129 transitions. [2022-12-13 19:50:49,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 98 [2022-12-13 19:50:49,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 98 [2022-12-13 19:50:49,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 129 transitions. [2022-12-13 19:50:49,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:49,747 INFO L218 hiAutomatonCegarLoop]: Abstraction has 98 states and 129 transitions. [2022-12-13 19:50:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 129 transitions. [2022-12-13 19:50:49,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-13 19:50:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 98 states have (on average 1.316326530612245) internal successors, (129), 97 states have internal predecessors, (129), 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) [2022-12-13 19:50:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2022-12-13 19:50:49,776 INFO L240 hiAutomatonCegarLoop]: Abstraction has 98 states and 129 transitions. [2022-12-13 19:50:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:50:49,780 INFO L428 stractBuchiCegarLoop]: Abstraction has 98 states and 129 transitions. [2022-12-13 19:50:49,780 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 19:50:49,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 129 transitions. [2022-12-13 19:50:49,782 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2022-12-13 19:50:49,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:50:49,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:50:49,783 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:49,783 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:49,783 INFO L748 eck$LassoCheckResult]: Stem: 280#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 281#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~3#1, main_~tmp~0#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 272#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 273#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 329#valid_product_returnLabel#1 main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 275#L239 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 276#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet33#1, test_#t~nondet34#1, test_#t~nondet35#1, test_#t~nondet36#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 254#L638-2 [2022-12-13 19:50:49,783 INFO L750 eck$LassoCheckResult]: Loop: 254#L638-2 assume !false; 255#L639 assume test_~splverifierCounter~0#1 < 4; 282#L640 test_~tmp~4#1 := test_#t~nondet33#1;havoc test_#t~nondet33#1; 283#L648 assume !(0 != test_~tmp~4#1); 250#L648-2 test_~tmp___0~0#1 := test_#t~nondet34#1;havoc test_#t~nondet34#1; 251#L658 assume !(0 != test_~tmp___0~0#1); 244#L658-2 test_~tmp___2~0#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 284#L668 assume 0 != test_~tmp___2~0#1; 267#L674-2 assume { :begin_inline_timeShift } true; 305#L704 assume !(0 != ~pumpRunning~0); 268#L704-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret37#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 287#L736 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 288#processEnvironment__wrappee__base_returnLabel#2 assume { :end_inline_processEnvironment__wrappee__base } true; 247#L736-1 assume { :end_inline_processEnvironment } true; 319#L711-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret48#1, __utac_acc__Specification3_spec__1_#t~ret49#1, __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_~tmp~7#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~7#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#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; 332#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification3_spec__1_#t~ret48#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~7#1 := __utac_acc__Specification3_spec__1_#t~ret48#1;havoc __utac_acc__Specification3_spec__1_#t~ret48#1; 324#L858 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7#1; 279#L864-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 318#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 254#L638-2 [2022-12-13 19:50:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2022-12-13 19:50:49,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:49,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237136571] [2022-12-13 19:50:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:49,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:49,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -232261579, now seen corresponding path program 1 times [2022-12-13 19:50:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:49,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453569559] [2022-12-13 19:50:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:49,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:49,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453569559] [2022-12-13 19:50:49,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453569559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:49,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:49,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:50:49,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133455608] [2022-12-13 19:50:49,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:49,827 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 19:50:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:50:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:50:49,828 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. cyclomatic complexity: 33 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:49,867 INFO L93 Difference]: Finished difference Result 156 states and 200 transitions. [2022-12-13 19:50:49,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 200 transitions. [2022-12-13 19:50:49,869 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2022-12-13 19:50:49,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 156 states and 200 transitions. [2022-12-13 19:50:49,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 156 [2022-12-13 19:50:49,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 156 [2022-12-13 19:50:49,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 156 states and 200 transitions. [2022-12-13 19:50:49,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:49,872 INFO L218 hiAutomatonCegarLoop]: Abstraction has 156 states and 200 transitions. [2022-12-13 19:50:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states and 200 transitions. [2022-12-13 19:50:49,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-12-13 19:50:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 156 states have (on average 1.2820512820512822) internal successors, (200), 155 states have internal predecessors, (200), 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) [2022-12-13 19:50:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 200 transitions. [2022-12-13 19:50:49,885 INFO L240 hiAutomatonCegarLoop]: Abstraction has 156 states and 200 transitions. [2022-12-13 19:50:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:50:49,886 INFO L428 stractBuchiCegarLoop]: Abstraction has 156 states and 200 transitions. [2022-12-13 19:50:49,886 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 19:50:49,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 156 states and 200 transitions. [2022-12-13 19:50:49,888 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2022-12-13 19:50:49,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:50:49,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:50:49,889 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:49,889 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:49,889 INFO L748 eck$LassoCheckResult]: Stem: 541#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 542#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~3#1, main_~tmp~0#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 533#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 534#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 596#valid_product_returnLabel#1 main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 536#L239 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 537#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet33#1, test_#t~nondet34#1, test_#t~nondet35#1, test_#t~nondet36#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 515#L638-2 [2022-12-13 19:50:49,889 INFO L750 eck$LassoCheckResult]: Loop: 515#L638-2 assume !false; 516#L639 assume test_~splverifierCounter~0#1 < 4; 543#L640 test_~tmp~4#1 := test_#t~nondet33#1;havoc test_#t~nondet33#1; 544#L648 assume !(0 != test_~tmp~4#1); 511#L648-2 test_~tmp___0~0#1 := test_#t~nondet34#1;havoc test_#t~nondet34#1; 512#L658 assume !(0 != test_~tmp___0~0#1); 504#L658-2 test_~tmp___2~0#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 545#L668 assume 0 != test_~tmp___2~0#1; 528#L674-2 assume { :begin_inline_timeShift } true; 568#L704 assume !(0 != ~pumpRunning~0); 557#L704-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret37#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 548#L736 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret47#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~6#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~6#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 549#L140 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 525#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret47#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~6#1 := isHighWaterLevel_#t~ret47#1;havoc isHighWaterLevel_#t~ret47#1; 526#L838 assume 0 != isHighWaterLevel_~tmp~6#1;isHighWaterLevel_~tmp___0~1#1 := 0; 546#L838-2 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 599#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~5#1 := processEnvironment_#t~ret37#1;havoc processEnvironment_#t~ret37#1; 563#L740 assume !(0 != processEnvironment_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 519#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 520#L736-1 assume { :end_inline_processEnvironment } true; 583#L711-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret48#1, __utac_acc__Specification3_spec__1_#t~ret49#1, __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_~tmp~7#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~7#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#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; 601#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification3_spec__1_#t~ret48#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~7#1 := __utac_acc__Specification3_spec__1_#t~ret48#1;havoc __utac_acc__Specification3_spec__1_#t~ret48#1; 589#L858 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7#1; 540#L864-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 582#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 515#L638-2 [2022-12-13 19:50:49,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2022-12-13 19:50:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:49,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41241155] [2022-12-13 19:50:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:49,896 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:49,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:49,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1748481025, now seen corresponding path program 1 times [2022-12-13 19:50:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:49,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393810521] [2022-12-13 19:50:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:49,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:49,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393810521] [2022-12-13 19:50:49,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393810521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:49,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:49,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:50:49,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006695740] [2022-12-13 19:50:49,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:49,933 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 19:50:49,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:50:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:50:49,934 INFO L87 Difference]: Start difference. First operand 156 states and 200 transitions. cyclomatic complexity: 46 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-12-13 19:50:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:49,987 INFO L93 Difference]: Finished difference Result 442 states and 562 transitions. [2022-12-13 19:50:49,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 442 states and 562 transitions. [2022-12-13 19:50:49,990 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 322 [2022-12-13 19:50:49,992 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 442 states to 442 states and 562 transitions. [2022-12-13 19:50:49,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 442 [2022-12-13 19:50:49,993 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 442 [2022-12-13 19:50:49,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 442 states and 562 transitions. [2022-12-13 19:50:49,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:49,994 INFO L218 hiAutomatonCegarLoop]: Abstraction has 442 states and 562 transitions. [2022-12-13 19:50:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states and 562 transitions. [2022-12-13 19:50:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 162. [2022-12-13 19:50:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 162 states have (on average 1.271604938271605) internal successors, (206), 161 states have internal predecessors, (206), 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) [2022-12-13 19:50:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 206 transitions. [2022-12-13 19:50:50,001 INFO L240 hiAutomatonCegarLoop]: Abstraction has 162 states and 206 transitions. [2022-12-13 19:50:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:50:50,002 INFO L428 stractBuchiCegarLoop]: Abstraction has 162 states and 206 transitions. [2022-12-13 19:50:50,002 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 19:50:50,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 206 transitions. [2022-12-13 19:50:50,003 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2022-12-13 19:50:50,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:50:50,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:50:50,004 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:50,004 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:50,005 INFO L748 eck$LassoCheckResult]: Stem: 1149#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1150#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~3#1, main_~tmp~0#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 1140#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1141#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 1212#valid_product_returnLabel#1 main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 1143#L239 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 1144#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet33#1, test_#t~nondet34#1, test_#t~nondet35#1, test_#t~nondet36#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1122#L638-2 [2022-12-13 19:50:50,005 INFO L750 eck$LassoCheckResult]: Loop: 1122#L638-2 assume !false; 1123#L639 assume test_~splverifierCounter~0#1 < 4; 1151#L640 test_~tmp~4#1 := test_#t~nondet33#1;havoc test_#t~nondet33#1; 1152#L648 assume !(0 != test_~tmp~4#1); 1120#L648-2 test_~tmp___0~0#1 := test_#t~nondet34#1;havoc test_#t~nondet34#1; 1121#L658 assume !(0 != test_~tmp___0~0#1); 1112#L658-2 test_~tmp___2~0#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 1155#L668 assume 0 != test_~tmp___2~0#1; 1135#L674-2 assume { :begin_inline_timeShift } true; 1180#L704 assume !(0 != ~pumpRunning~0); 1167#L704-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret37#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 1158#L736 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret47#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~6#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~6#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1159#L140 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1186#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret47#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~6#1 := isHighWaterLevel_#t~ret47#1;havoc isHighWaterLevel_#t~ret47#1; 1156#L838 assume !(0 != isHighWaterLevel_~tmp~6#1);isHighWaterLevel_~tmp___0~1#1 := 1; 1157#L838-2 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 1215#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~5#1 := processEnvironment_#t~ret37#1;havoc processEnvironment_#t~ret37#1; 1175#L740 assume !(0 != processEnvironment_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1126#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 1127#L736-1 assume { :end_inline_processEnvironment } true; 1237#L711-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret48#1, __utac_acc__Specification3_spec__1_#t~ret49#1, __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_~tmp~7#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~7#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#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; 1236#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification3_spec__1_#t~ret48#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~7#1 := __utac_acc__Specification3_spec__1_#t~ret48#1;havoc __utac_acc__Specification3_spec__1_#t~ret48#1; 1234#L858 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7#1; 1232#L864-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1230#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 1122#L638-2 [2022-12-13 19:50:50,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2022-12-13 19:50:50,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:50,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578412549] [2022-12-13 19:50:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:50,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1047416447, now seen corresponding path program 1 times [2022-12-13 19:50:50,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:50,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136354510] [2022-12-13 19:50:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:50,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:50,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136354510] [2022-12-13 19:50:50,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136354510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:50,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:50,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:50:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915291744] [2022-12-13 19:50:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:50,068 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 19:50:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:50:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:50:50,069 INFO L87 Difference]: Start difference. First operand 162 states and 206 transitions. cyclomatic complexity: 46 Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2022-12-13 19:50:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:50,129 INFO L93 Difference]: Finished difference Result 311 states and 396 transitions. [2022-12-13 19:50:50,129 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 311 states and 396 transitions. [2022-12-13 19:50:50,131 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 224 [2022-12-13 19:50:50,133 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 311 states to 311 states and 396 transitions. [2022-12-13 19:50:50,133 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 311 [2022-12-13 19:50:50,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 311 [2022-12-13 19:50:50,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 311 states and 396 transitions. [2022-12-13 19:50:50,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:50,134 INFO L218 hiAutomatonCegarLoop]: Abstraction has 311 states and 396 transitions. [2022-12-13 19:50:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states and 396 transitions. [2022-12-13 19:50:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 171. [2022-12-13 19:50:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 171 states have (on average 1.2573099415204678) internal successors, (215), 170 states have internal predecessors, (215), 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) [2022-12-13 19:50:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 215 transitions. [2022-12-13 19:50:50,142 INFO L240 hiAutomatonCegarLoop]: Abstraction has 171 states and 215 transitions. [2022-12-13 19:50:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:50:50,143 INFO L428 stractBuchiCegarLoop]: Abstraction has 171 states and 215 transitions. [2022-12-13 19:50:50,143 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 19:50:50,144 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 171 states and 215 transitions. [2022-12-13 19:50:50,145 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 120 [2022-12-13 19:50:50,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:50:50,145 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:50:50,146 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:50,146 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:50,146 INFO L748 eck$LassoCheckResult]: Stem: 1638#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1639#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~3#1, main_~tmp~0#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 1627#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1628#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 1696#valid_product_returnLabel#1 main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 1630#L239 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 1631#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet33#1, test_#t~nondet34#1, test_#t~nondet35#1, test_#t~nondet36#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1610#L638-2 [2022-12-13 19:50:50,146 INFO L750 eck$LassoCheckResult]: Loop: 1610#L638-2 assume !false; 1611#L639 assume test_~splverifierCounter~0#1 < 4; 1636#L640 test_~tmp~4#1 := test_#t~nondet33#1;havoc test_#t~nondet33#1; 1637#L648 assume !(0 != test_~tmp~4#1); 1608#L648-2 test_~tmp___0~0#1 := test_#t~nondet34#1;havoc test_#t~nondet34#1; 1609#L658 assume !(0 != test_~tmp___0~0#1); 1599#L658-2 test_~tmp___2~0#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 1640#L668 assume 0 != test_~tmp___2~0#1; 1622#L674-2 assume { :begin_inline_timeShift } true; 1666#L704 assume !(0 != ~pumpRunning~0); 1652#L704-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret37#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 1644#L736 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret47#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~6#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~6#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1645#L140 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1672#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret47#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~6#1 := isHighWaterLevel_#t~ret47#1;havoc isHighWaterLevel_#t~ret47#1; 1713#L838 assume 0 != isHighWaterLevel_~tmp~6#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1699#L838-2 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 1700#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~5#1 := processEnvironment_#t~ret37#1;havoc processEnvironment_#t~ret37#1; 1701#L740 assume !(0 != processEnvironment_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1614#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 1615#L736-1 assume { :end_inline_processEnvironment } true; 1762#L711-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret48#1, __utac_acc__Specification3_spec__1_#t~ret49#1, __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_~tmp~7#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~7#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#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; 1708#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification3_spec__1_#t~ret48#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~7#1 := __utac_acc__Specification3_spec__1_#t~ret48#1;havoc __utac_acc__Specification3_spec__1_#t~ret48#1; 1688#L858 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7#1; 1633#L864-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1681#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 1610#L638-2 [2022-12-13 19:50:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 5 times [2022-12-13 19:50:50,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266011689] [2022-12-13 19:50:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:50,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:50,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:50,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1161675011, now seen corresponding path program 1 times [2022-12-13 19:50:50,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:50,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843551494] [2022-12-13 19:50:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:50,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1882287545, now seen corresponding path program 1 times [2022-12-13 19:50:50,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:50,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634086966] [2022-12-13 19:50:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:50,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634086966] [2022-12-13 19:50:50,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634086966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:50,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:50,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:50:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544482776] [2022-12-13 19:50:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:50,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:50,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:50:50,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:50:50,407 INFO L87 Difference]: Start difference. First operand 171 states and 215 transitions. cyclomatic complexity: 46 Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-13 19:50:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:50,485 INFO L93 Difference]: Finished difference Result 599 states and 748 transitions. [2022-12-13 19:50:50,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 599 states and 748 transitions. [2022-12-13 19:50:50,491 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 442 [2022-12-13 19:50:50,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 599 states to 599 states and 748 transitions. [2022-12-13 19:50:50,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 599 [2022-12-13 19:50:50,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 599 [2022-12-13 19:50:50,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 599 states and 748 transitions. [2022-12-13 19:50:50,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:50,494 INFO L218 hiAutomatonCegarLoop]: Abstraction has 599 states and 748 transitions. [2022-12-13 19:50:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states and 748 transitions. [2022-12-13 19:50:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 335. [2022-12-13 19:50:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 335 states have (on average 1.2388059701492538) internal successors, (415), 334 states have internal predecessors, (415), 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) [2022-12-13 19:50:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 415 transitions. [2022-12-13 19:50:50,501 INFO L240 hiAutomatonCegarLoop]: Abstraction has 335 states and 415 transitions. [2022-12-13 19:50:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:50:50,507 INFO L428 stractBuchiCegarLoop]: Abstraction has 335 states and 415 transitions. [2022-12-13 19:50:50,507 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 19:50:50,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 335 states and 415 transitions. [2022-12-13 19:50:50,509 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 240 [2022-12-13 19:50:50,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:50:50,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:50:50,510 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:50,510 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:50,510 INFO L748 eck$LassoCheckResult]: Stem: 2424#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2425#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~3#1, main_~tmp~0#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 2416#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2417#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 2489#valid_product_returnLabel#1 main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 2419#L239 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 2420#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet33#1, test_#t~nondet34#1, test_#t~nondet35#1, test_#t~nondet36#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2398#L638-2 [2022-12-13 19:50:50,510 INFO L750 eck$LassoCheckResult]: Loop: 2398#L638-2 assume !false; 2399#L639 assume test_~splverifierCounter~0#1 < 4; 2426#L640 test_~tmp~4#1 := test_#t~nondet33#1;havoc test_#t~nondet33#1; 2427#L648 assume !(0 != test_~tmp~4#1); 2396#L648-2 test_~tmp___0~0#1 := test_#t~nondet34#1;havoc test_#t~nondet34#1; 2397#L658 assume !(0 != test_~tmp___0~0#1); 2385#L658-2 test_~tmp___2~0#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 2428#L668 assume 0 != test_~tmp___2~0#1; 2410#L674-2 assume { :begin_inline_timeShift } true; 2456#L704 assume !(0 != ~pumpRunning~0); 2442#L704-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret37#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 2432#L736 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret47#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~6#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~6#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 2433#L140 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2463#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret47#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~6#1 := isHighWaterLevel_#t~ret47#1;havoc isHighWaterLevel_#t~ret47#1; 2709#L838 assume 0 != isHighWaterLevel_~tmp~6#1;isHighWaterLevel_~tmp___0~1#1 := 0; 2707#L838-2 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 2705#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~5#1 := processEnvironment_#t~ret37#1;havoc processEnvironment_#t~ret37#1; 2704#L740 assume !(0 != processEnvironment_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2402#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 2403#L736-1 assume { :end_inline_processEnvironment } true; 2474#L711-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret48#1, __utac_acc__Specification3_spec__1_#t~ret49#1, __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_~tmp~7#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~7#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#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; 2497#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification3_spec__1_#t~ret48#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~7#1 := __utac_acc__Specification3_spec__1_#t~ret48#1;havoc __utac_acc__Specification3_spec__1_#t~ret48#1; 2482#L858 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 2483#getWaterLevel_returnLabel#1 __utac_acc__Specification3_spec__1_#t~ret49#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~2#1 := __utac_acc__Specification3_spec__1_#t~ret49#1;havoc __utac_acc__Specification3_spec__1_#t~ret49#1; 2498#L864 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2#1); 2423#L864-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 2473#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 2398#L638-2 [2022-12-13 19:50:50,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:50,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 6 times [2022-12-13 19:50:50,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:50,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874485486] [2022-12-13 19:50:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:50,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash 323062864, now seen corresponding path program 1 times [2022-12-13 19:50:50,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:50,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339390612] [2022-12-13 19:50:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:50,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:50,535 INFO L85 PathProgramCache]: Analyzing trace with hash 698350604, now seen corresponding path program 1 times [2022-12-13 19:50:50,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:50,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192474428] [2022-12-13 19:50:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:50,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:50:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:51,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:50:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:50:51,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 07:50:51 BoogieIcfgContainer [2022-12-13 19:50:51,381 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 19:50:51,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:50:51,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:50:51,381 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:50:51,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:50:49" (3/4) ... [2022-12-13 19:50:51,384 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-12-13 19:50:51,428 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:50:51,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:50:51,429 INFO L158 Benchmark]: Toolchain (without parser) took 2987.52ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 95.2MB in the beginning and 99.0MB in the end (delta: -3.8MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-12-13 19:50:51,429 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 132.1MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:50:51,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.28ms. Allocated memory is still 132.1MB. Free memory was 94.9MB in the beginning and 76.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 19:50:51,429 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.25ms. Allocated memory is still 132.1MB. Free memory was 76.7MB in the beginning and 74.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:50:51,430 INFO L158 Benchmark]: Boogie Preprocessor took 29.43ms. Allocated memory is still 132.1MB. Free memory was 74.3MB in the beginning and 72.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:50:51,430 INFO L158 Benchmark]: RCFGBuilder took 383.39ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 72.2MB in the beginning and 127.1MB in the end (delta: -54.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2022-12-13 19:50:51,431 INFO L158 Benchmark]: BuchiAutomizer took 2205.62ms. Allocated memory is still 159.4MB. Free memory was 127.1MB in the beginning and 102.1MB in the end (delta: 25.0MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2022-12-13 19:50:51,431 INFO L158 Benchmark]: Witness Printer took 46.78ms. Allocated memory is still 159.4MB. Free memory was 101.1MB in the beginning and 99.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:50:51,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 132.1MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.28ms. Allocated memory is still 132.1MB. Free memory was 94.9MB in the beginning and 76.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.25ms. Allocated memory is still 132.1MB. Free memory was 76.7MB in the beginning and 74.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.43ms. Allocated memory is still 132.1MB. Free memory was 74.3MB in the beginning and 72.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 383.39ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 72.2MB in the beginning and 127.1MB in the end (delta: -54.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 2205.62ms. Allocated memory is still 159.4MB. Free memory was 127.1MB in the beginning and 102.1MB in the end (delta: 25.0MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * Witness Printer took 46.78ms. Allocated memory is still 159.4MB. Free memory was 101.1MB in the beginning and 99.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 335 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 684 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1783 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1783 mSDsluCounter, 2377 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1450 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157 IncrementalHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 927 mSDtfsCounter, 157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 638]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L151] int cleanupTimeShifts = 4; [L422] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L696] int pumpRunning = 0; [L697] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L230] int retValue_acc ; [L231] int tmp ; [L235] FCALL select_helpers() [L236] FCALL select_features() [L237] CALL, EXPR valid_product() [L909] int retValue_acc ; [L912] retValue_acc = 1 [L913] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L237] RET, EXPR valid_product() [L237] tmp = valid_product() [L239] COND TRUE \read(tmp) [L241] FCALL setup() [L242] CALL runTest() [L221] CALL test() [L629] int splverifierCounter ; [L630] int tmp ; [L631] int tmp___0 ; [L632] int tmp___1 ; [L633] int tmp___2 ; [L636] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L638] COND TRUE 1 [L640] COND TRUE splverifierCounter < 4 [L646] tmp = __VERIFIER_nondet_int() [L648] COND FALSE !(\read(tmp)) [L656] tmp___0 = __VERIFIER_nondet_int() [L658] COND FALSE !(\read(tmp___0)) [L666] tmp___2 = __VERIFIER_nondet_int() [L668] COND TRUE \read(tmp___2) [L681] CALL timeShift() [L704] COND FALSE !(\read(pumpRunning)) [L711] COND TRUE \read(systemActive) [L713] CALL processEnvironment() [L733] int tmp ; [L736] COND TRUE ! pumpRunning [L738] CALL, EXPR isHighWaterLevel() [L830] int retValue_acc ; [L831] int tmp ; [L832] int tmp___0 ; [L836] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L836] RET, EXPR isHighWaterSensorDry() [L836] tmp = isHighWaterSensorDry() [L838] COND TRUE \read(tmp) [L839] tmp___0 = 0 [L843] retValue_acc = tmp___0 [L844] return (retValue_acc); [L738] RET, EXPR isHighWaterLevel() [L738] tmp = isHighWaterLevel() [L740] COND FALSE !(\read(tmp)) [L746] FCALL processEnvironment__wrappee__base() [L713] RET processEnvironment() [L719] CALL __utac_acc__Specification3_spec__1() [L850] int tmp ; [L851] int tmp___0 ; [L852] int tmp___1 ; [L856] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND FALSE !(\read(tmp)) [L862] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); [L862] RET, EXPR getWaterLevel() [L862] tmp___0 = getWaterLevel() [L864] COND FALSE !(tmp___0 == 2) [L719] RET __utac_acc__Specification3_spec__1() [L681] RET timeShift() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 638]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L151] int cleanupTimeShifts = 4; [L422] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L696] int pumpRunning = 0; [L697] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L230] int retValue_acc ; [L231] int tmp ; [L235] FCALL select_helpers() [L236] FCALL select_features() [L237] CALL, EXPR valid_product() [L909] int retValue_acc ; [L912] retValue_acc = 1 [L913] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L237] RET, EXPR valid_product() [L237] tmp = valid_product() [L239] COND TRUE \read(tmp) [L241] FCALL setup() [L242] CALL runTest() [L221] CALL test() [L629] int splverifierCounter ; [L630] int tmp ; [L631] int tmp___0 ; [L632] int tmp___1 ; [L633] int tmp___2 ; [L636] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L638] COND TRUE 1 [L640] COND TRUE splverifierCounter < 4 [L646] tmp = __VERIFIER_nondet_int() [L648] COND FALSE !(\read(tmp)) [L656] tmp___0 = __VERIFIER_nondet_int() [L658] COND FALSE !(\read(tmp___0)) [L666] tmp___2 = __VERIFIER_nondet_int() [L668] COND TRUE \read(tmp___2) [L681] CALL timeShift() [L704] COND FALSE !(\read(pumpRunning)) [L711] COND TRUE \read(systemActive) [L713] CALL processEnvironment() [L733] int tmp ; [L736] COND TRUE ! pumpRunning [L738] CALL, EXPR isHighWaterLevel() [L830] int retValue_acc ; [L831] int tmp ; [L832] int tmp___0 ; [L836] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L836] RET, EXPR isHighWaterSensorDry() [L836] tmp = isHighWaterSensorDry() [L838] COND TRUE \read(tmp) [L839] tmp___0 = 0 [L843] retValue_acc = tmp___0 [L844] return (retValue_acc); [L738] RET, EXPR isHighWaterLevel() [L738] tmp = isHighWaterLevel() [L740] COND FALSE !(\read(tmp)) [L746] FCALL processEnvironment__wrappee__base() [L713] RET processEnvironment() [L719] CALL __utac_acc__Specification3_spec__1() [L850] int tmp ; [L851] int tmp___0 ; [L852] int tmp___1 ; [L856] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND FALSE !(\read(tmp)) [L862] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); [L862] RET, EXPR getWaterLevel() [L862] tmp___0 = getWaterLevel() [L864] COND FALSE !(tmp___0 == 2) [L719] RET __utac_acc__Specification3_spec__1() [L681] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-12-13 19:50:51,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c76e2bb6-7883-4353-8b4e-9eb7bfbfb972/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, 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)