./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b 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_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN --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 8521353bcf4bae83665566564f0550ca2d5ed2f2d2c87d1236006cfbb2433fe4 --- 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-6b4ec56 [2022-11-20 12:36:54,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:36:54,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:36:54,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:36:54,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:36:54,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:36:54,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:36:54,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:36:54,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:36:54,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:36:54,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:36:54,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:36:54,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:36:54,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:36:54,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:36:54,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:36:54,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:36:54,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:36:54,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:36:54,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:36:54,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:36:54,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:36:54,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:36:54,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:36:54,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:36:54,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:36:54,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:36:54,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:36:54,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:36:54,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:36:54,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:36:54,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:36:54,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:36:54,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:36:54,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:36:54,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:36:54,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:36:54,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:36:54,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:36:54,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:36:54,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:36:54,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 12:36:54,836 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:36:54,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:36:54,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:36:54,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:36:54,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:36:54,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:36:54,839 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:36:54,839 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 12:36:54,839 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 12:36:54,840 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 12:36:54,841 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 12:36:54,841 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 12:36:54,841 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 12:36:54,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:36:54,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:36:54,842 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:36:54,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:36:54,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:36:54,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:36:54,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 12:36:54,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 12:36:54,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 12:36:54,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:36:54,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:36:54,844 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 12:36:54,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:36:54,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 12:36:54,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:36:54,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:36:54,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:36:54,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:36:54,848 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 12:36:54,848 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_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8521353bcf4bae83665566564f0550ca2d5ed2f2d2c87d1236006cfbb2433fe4 [2022-11-20 12:36:55,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:36:55,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:36:55,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:36:55,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:36:55,152 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:36:55,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2022-11-20 12:36:58,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:36:58,552 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:36:58,553 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2022-11-20 12:36:58,565 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/data/0d67595e3/a1a753a99c314b2591cf2047c49703d7/FLAGa04db3686 [2022-11-20 12:36:58,579 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/data/0d67595e3/a1a753a99c314b2591cf2047c49703d7 [2022-11-20 12:36:58,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:36:58,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:36:58,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:58,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:36:58,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:36:58,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:58" (1/1) ... [2022-11-20 12:36:58,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e8d01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:58, skipping insertion in model container [2022-11-20 12:36:58,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:58" (1/1) ... [2022-11-20 12:36:58,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:36:58,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:36:58,874 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_8f2103f2-3d25-463d-aef3-6034dd9b0b82/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2022-11-20 12:36:58,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:59,007 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:36:59,052 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_8f2103f2-3d25-463d-aef3-6034dd9b0b82/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2022-11-20 12:36:59,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:59,158 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:36:59,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59 WrapperNode [2022-11-20 12:36:59,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:59,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:59,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:36:59,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:36:59,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,274 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 54, calls inlined = 80, statements flattened = 553 [2022-11-20 12:36:59,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:59,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:36:59,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:36:59,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:36:59,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,341 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:36:59,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:36:59,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:36:59,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:36:59,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (1/1) ... [2022-11-20 12:36:59,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:36:59,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:59,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:36:59,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 12:36:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:36:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:36:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:36:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:36:59,509 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:36:59,511 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:37:00,061 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:37:00,071 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:37:00,072 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:37:00,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:37:00 BoogieIcfgContainer [2022-11-20 12:37:00,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:37:00,076 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 12:37:00,076 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 12:37:00,080 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 12:37:00,081 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:37:00,081 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:36:58" (1/3) ... [2022-11-20 12:37:00,082 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a823f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:37:00, skipping insertion in model container [2022-11-20 12:37:00,082 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:37:00,082 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:59" (2/3) ... [2022-11-20 12:37:00,083 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a823f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:37:00, skipping insertion in model container [2022-11-20 12:37:00,083 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:37:00,083 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:37:00" (3/3) ... [2022-11-20 12:37:00,089 INFO L332 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2022-11-20 12:37:00,201 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 12:37:00,202 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 12:37:00,202 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 12:37:00,202 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 12:37:00,202 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 12:37:00,202 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 12:37:00,202 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 12:37:00,203 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 12:37:00,207 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 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) [2022-11-20 12:37:00,231 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 109 [2022-11-20 12:37:00,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:37:00,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:37:00,238 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:00,238 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:00,238 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 12:37:00,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 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) [2022-11-20 12:37:00,246 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 109 [2022-11-20 12:37:00,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:37:00,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:37:00,247 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:00,247 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:00,253 INFO L748 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRYtrue 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;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 47#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret26#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 10#L981true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 50#L974true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 39#L989true main_#t~ret26#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret26#1;havoc main_#t~ret26#1; 93#L553true assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 117#L527true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 25#L409-2true [2022-11-20 12:37:00,253 INFO L750 eck$LassoCheckResult]: Loop: 25#L409-2true assume !false; 125#L410true assume test_~splverifierCounter~0#1 < 4; 69#L411true test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 3#L419true assume !(0 != test_~tmp~4#1); 16#L419-2true test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 101#L429true assume !(0 != test_~tmp___0~2#1); 59#L429-2true test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 70#L439true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 34#L447true assume !(0 != test_~tmp___1~0#1); 119#L447-2true assume { :begin_inline_timeShift } true; 51#L176true assume !(0 != ~pumpRunning~0); 158#L176-2true assume !(0 != ~systemActive~0); 115#L183-1true assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret27#1, __utac_acc__Specification1_spec__1_#t~ret28#1, __utac_acc__Specification1_spec__1_~tmp~6#1, __utac_acc__Specification1_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification1_spec__1_~tmp~6#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~3#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; 147#L101true __utac_acc__Specification1_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~6#1 := __utac_acc__Specification1_spec__1_#t~ret27#1;havoc __utac_acc__Specification1_spec__1_#t~ret27#1; 15#L575true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6#1); 42#L575-1true assume { :end_inline___utac_acc__Specification1_spec__1 } true; 71#L193true assume { :end_inline_timeShift } true; 25#L409-2true [2022-11-20 12:37:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2022-11-20 12:37:00,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141305729] [2022-11-20 12:37:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:00,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:00,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:00,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:00,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:00,459 INFO L85 PathProgramCache]: Analyzing trace with hash -902458001, now seen corresponding path program 1 times [2022-11-20 12:37:00,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:00,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734381927] [2022-11-20 12:37:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:00,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:00,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:00,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1834139605, now seen corresponding path program 1 times [2022-11-20 12:37:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:00,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641678297] [2022-11-20 12:37:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:00,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:00,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:00,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641678297] [2022-11-20 12:37:00,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641678297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:00,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:00,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:00,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402595250] [2022-11-20 12:37:00,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:01,039 INFO L87 Difference]: Start difference. First operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 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 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-11-20 12:37:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:01,220 INFO L93 Difference]: Finished difference Result 540 states and 710 transitions. [2022-11-20 12:37:01,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 540 states and 710 transitions. [2022-11-20 12:37:01,232 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 352 [2022-11-20 12:37:01,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 540 states to 500 states and 670 transitions. [2022-11-20 12:37:01,242 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 500 [2022-11-20 12:37:01,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 500 [2022-11-20 12:37:01,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 500 states and 670 transitions. [2022-11-20 12:37:01,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:01,248 INFO L218 hiAutomatonCegarLoop]: Abstraction has 500 states and 670 transitions. [2022-11-20 12:37:01,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states and 670 transitions. [2022-11-20 12:37:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 206. [2022-11-20 12:37:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 206 states have (on average 1.3349514563106797) internal successors, (275), 205 states have internal predecessors, (275), 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) [2022-11-20 12:37:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2022-11-20 12:37:01,310 INFO L240 hiAutomatonCegarLoop]: Abstraction has 206 states and 275 transitions. [2022-11-20 12:37:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:37:01,319 INFO L428 stractBuchiCegarLoop]: Abstraction has 206 states and 275 transitions. [2022-11-20 12:37:01,319 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 12:37:01,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 206 states and 275 transitions. [2022-11-20 12:37:01,322 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 145 [2022-11-20 12:37:01,322 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:37:01,322 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:37:01,326 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:01,326 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] [2022-11-20 12:37:01,326 INFO L748 eck$LassoCheckResult]: Stem: 877#ULTIMATE.startENTRY 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;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 806#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret26#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 741#L981 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 742#L974 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 795#L989 main_#t~ret26#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret26#1;havoc main_#t~ret26#1; 796#L553 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 850#L527 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 768#L409-2 [2022-11-20 12:37:01,326 INFO L750 eck$LassoCheckResult]: Loop: 768#L409-2 assume !false; 769#L410 assume test_~splverifierCounter~0#1 < 4; 830#L411 test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 725#L419 assume !(0 != test_~tmp~4#1); 727#L419-2 test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 754#L429 assume !(0 != test_~tmp___0~2#1); 763#L429-2 test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 819#L439 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 785#L447 assume !(0 != test_~tmp___1~0#1); 765#L447-2 assume { :begin_inline_timeShift } true; 810#L176 assume !(0 != ~pumpRunning~0); 811#L176-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 842#L234 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 843#L208-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 872#L200-3 assume { :end_inline_processEnvironment__wrappee__base } true; 858#L208-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 821#L234-1 assume { :end_inline_processEnvironment } true; 866#L183-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret27#1, __utac_acc__Specification1_spec__1_#t~ret28#1, __utac_acc__Specification1_spec__1_~tmp~6#1, __utac_acc__Specification1_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification1_spec__1_~tmp~6#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~3#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; 867#L101 __utac_acc__Specification1_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~6#1 := __utac_acc__Specification1_spec__1_#t~ret27#1;havoc __utac_acc__Specification1_spec__1_#t~ret27#1; 752#L575 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6#1); 748#L575-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 801#L193 assume { :end_inline_timeShift } true; 768#L409-2 [2022-11-20 12:37:01,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2022-11-20 12:37:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634260215] [2022-11-20 12:37:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:01,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:01,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:01,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2056867099, now seen corresponding path program 1 times [2022-11-20 12:37:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298450137] [2022-11-20 12:37:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:01,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:01,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298450137] [2022-11-20 12:37:01,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298450137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:01,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:01,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:37:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387413762] [2022-11-20 12:37:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:01,408 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 12:37:01,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:37:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:37:01,409 INFO L87 Difference]: Start difference. First operand 206 states and 275 transitions. cyclomatic complexity: 72 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:01,523 INFO L93 Difference]: Finished difference Result 257 states and 327 transitions. [2022-11-20 12:37:01,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 257 states and 327 transitions. [2022-11-20 12:37:01,526 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 185 [2022-11-20 12:37:01,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 257 states to 257 states and 327 transitions. [2022-11-20 12:37:01,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2022-11-20 12:37:01,529 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2022-11-20 12:37:01,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 257 states and 327 transitions. [2022-11-20 12:37:01,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:01,530 INFO L218 hiAutomatonCegarLoop]: Abstraction has 257 states and 327 transitions. [2022-11-20 12:37:01,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states and 327 transitions. [2022-11-20 12:37:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-11-20 12:37:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 257 states have (on average 1.272373540856031) internal successors, (327), 256 states have internal predecessors, (327), 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) [2022-11-20 12:37:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 327 transitions. [2022-11-20 12:37:01,538 INFO L240 hiAutomatonCegarLoop]: Abstraction has 257 states and 327 transitions. [2022-11-20 12:37:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:37:01,539 INFO L428 stractBuchiCegarLoop]: Abstraction has 257 states and 327 transitions. [2022-11-20 12:37:01,540 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 12:37:01,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 257 states and 327 transitions. [2022-11-20 12:37:01,541 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 185 [2022-11-20 12:37:01,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:37:01,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:37:01,542 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:01,543 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, 1] [2022-11-20 12:37:01,543 INFO L748 eck$LassoCheckResult]: Stem: 1352#ULTIMATE.startENTRY 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;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1274#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret26#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 1207#L981 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1208#L974 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 1262#L989 main_#t~ret26#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret26#1;havoc main_#t~ret26#1; 1263#L553 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 1320#L527 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1234#L409-2 [2022-11-20 12:37:01,543 INFO L750 eck$LassoCheckResult]: Loop: 1234#L409-2 assume !false; 1235#L410 assume test_~splverifierCounter~0#1 < 4; 1301#L411 test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 1194#L419 assume !(0 != test_~tmp~4#1); 1196#L419-2 test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 1220#L429 assume !(0 != test_~tmp___0~2#1); 1227#L429-2 test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 1289#L439 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 1251#L447 assume !(0 != test_~tmp___1~0#1); 1231#L447-2 assume { :begin_inline_timeShift } true; 1281#L176 assume !(0 != ~pumpRunning~0); 1282#L176-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 1313#L234 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 1314#L208-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1348#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1240#L146-1 isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; 1211#L336-3 assume !(0 != isHighWaterLevel_~tmp~2#1);isHighWaterLevel_~tmp___0~0#1 := 1; 1212#L336-5 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 1209#L342-1 processEnvironment__wrappee__highWaterSensor_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret9#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1; 1210#L212-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1332#L200-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1333#L208-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1292#L234-1 assume { :end_inline_processEnvironment } true; 1339#L183-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret27#1, __utac_acc__Specification1_spec__1_#t~ret28#1, __utac_acc__Specification1_spec__1_~tmp~6#1, __utac_acc__Specification1_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification1_spec__1_~tmp~6#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~3#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; 1340#L101 __utac_acc__Specification1_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~6#1 := __utac_acc__Specification1_spec__1_#t~ret27#1;havoc __utac_acc__Specification1_spec__1_#t~ret27#1; 1215#L575 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6#1); 1214#L575-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 1266#L193 assume { :end_inline_timeShift } true; 1234#L409-2 [2022-11-20 12:37:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2022-11-20 12:37:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552681456] [2022-11-20 12:37:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:01,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:01,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:01,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1587454331, now seen corresponding path program 1 times [2022-11-20 12:37:01,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215971698] [2022-11-20 12:37:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:01,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:01,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215971698] [2022-11-20 12:37:01,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215971698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:01,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:01,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:37:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622140177] [2022-11-20 12:37:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:01,600 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 12:37:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:01,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:37:01,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:37:01,601 INFO L87 Difference]: Start difference. First operand 257 states and 327 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2022-11-20 12:37:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:01,688 INFO L93 Difference]: Finished difference Result 501 states and 629 transitions. [2022-11-20 12:37:01,688 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 501 states and 629 transitions. [2022-11-20 12:37:01,692 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 366 [2022-11-20 12:37:01,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 501 states to 501 states and 629 transitions. [2022-11-20 12:37:01,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 501 [2022-11-20 12:37:01,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 501 [2022-11-20 12:37:01,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 501 states and 629 transitions. [2022-11-20 12:37:01,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:01,698 INFO L218 hiAutomatonCegarLoop]: Abstraction has 501 states and 629 transitions. [2022-11-20 12:37:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states and 629 transitions. [2022-11-20 12:37:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 269. [2022-11-20 12:37:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 269 states have (on average 1.2602230483271375) internal successors, (339), 268 states have internal predecessors, (339), 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) [2022-11-20 12:37:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 339 transitions. [2022-11-20 12:37:01,707 INFO L240 hiAutomatonCegarLoop]: Abstraction has 269 states and 339 transitions. [2022-11-20 12:37:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:37:01,708 INFO L428 stractBuchiCegarLoop]: Abstraction has 269 states and 339 transitions. [2022-11-20 12:37:01,708 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 12:37:01,709 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 269 states and 339 transitions. [2022-11-20 12:37:01,710 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 193 [2022-11-20 12:37:01,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:37:01,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:37:01,711 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:01,711 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, 1] [2022-11-20 12:37:01,712 INFO L748 eck$LassoCheckResult]: Stem: 2126#ULTIMATE.startENTRY 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;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 2043#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret26#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 1975#L981 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1976#L974 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 2031#L989 main_#t~ret26#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret26#1;havoc main_#t~ret26#1; 2032#L553 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 2090#L527 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2002#L409-2 [2022-11-20 12:37:01,712 INFO L750 eck$LassoCheckResult]: Loop: 2002#L409-2 assume !false; 2003#L410 assume test_~splverifierCounter~0#1 < 4; 2071#L411 test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 1962#L419 assume !(0 != test_~tmp~4#1); 1964#L419-2 test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 1988#L429 assume !(0 != test_~tmp___0~2#1); 1995#L429-2 test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 2059#L439 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 2020#L447 assume !(0 != test_~tmp___1~0#1); 1997#L447-2 assume { :begin_inline_timeShift } true; 2048#L176 assume !(0 != ~pumpRunning~0); 2049#L176-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 2083#L234 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 2084#L208-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 2119#L141-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2006#L146-1 isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; 2007#L336-3 assume !(0 != isHighWaterLevel_~tmp~2#1);isHighWaterLevel_~tmp___0~0#1 := 1; 1980#L336-5 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 1977#L342-1 processEnvironment__wrappee__highWaterSensor_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret9#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1; 1978#L212-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2103#L200-2 assume { :end_inline_processEnvironment__wrappee__base } true; 2104#L208-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2062#L234-1 assume { :end_inline_processEnvironment } true; 2111#L183-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret27#1, __utac_acc__Specification1_spec__1_#t~ret28#1, __utac_acc__Specification1_spec__1_~tmp~6#1, __utac_acc__Specification1_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification1_spec__1_~tmp~6#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~3#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; 2112#L101 __utac_acc__Specification1_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~6#1 := __utac_acc__Specification1_spec__1_#t~ret27#1;havoc __utac_acc__Specification1_spec__1_#t~ret27#1; 1983#L575 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6#1); 1982#L575-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 2035#L193 assume { :end_inline_timeShift } true; 2002#L409-2 [2022-11-20 12:37:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2022-11-20 12:37:01,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523890389] [2022-11-20 12:37:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:01,720 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:01,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 576337081, now seen corresponding path program 1 times [2022-11-20 12:37:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057313510] [2022-11-20 12:37:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:01,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:01,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057313510] [2022-11-20 12:37:01,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057313510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:01,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:01,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690458308] [2022-11-20 12:37:01,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:01,780 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 12:37:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:37:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:37:01,781 INFO L87 Difference]: Start difference. First operand 269 states and 339 transitions. cyclomatic complexity: 73 Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-11-20 12:37:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:01,952 INFO L93 Difference]: Finished difference Result 673 states and 844 transitions. [2022-11-20 12:37:01,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 673 states and 844 transitions. [2022-11-20 12:37:01,957 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 499 [2022-11-20 12:37:01,961 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 673 states to 673 states and 844 transitions. [2022-11-20 12:37:01,961 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 673 [2022-11-20 12:37:01,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 673 [2022-11-20 12:37:01,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 673 states and 844 transitions. [2022-11-20 12:37:01,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:01,965 INFO L218 hiAutomatonCegarLoop]: Abstraction has 673 states and 844 transitions. [2022-11-20 12:37:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states and 844 transitions. [2022-11-20 12:37:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 287. [2022-11-20 12:37:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 287 states have (on average 1.2439024390243902) internal successors, (357), 286 states have internal predecessors, (357), 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) [2022-11-20 12:37:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 357 transitions. [2022-11-20 12:37:01,982 INFO L240 hiAutomatonCegarLoop]: Abstraction has 287 states and 357 transitions. [2022-11-20 12:37:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:37:01,984 INFO L428 stractBuchiCegarLoop]: Abstraction has 287 states and 357 transitions. [2022-11-20 12:37:01,985 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 12:37:01,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 287 states and 357 transitions. [2022-11-20 12:37:01,987 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 205 [2022-11-20 12:37:01,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:37:01,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:37:01,988 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:01,988 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, 1] [2022-11-20 12:37:01,989 INFO L748 eck$LassoCheckResult]: Stem: 3089#ULTIMATE.startENTRY 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;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 3000#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret26#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 2931#L981 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2932#L974 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 2988#L989 main_#t~ret26#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret26#1;havoc main_#t~ret26#1; 2989#L553 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 3049#L527 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2958#L409-2 [2022-11-20 12:37:01,989 INFO L750 eck$LassoCheckResult]: Loop: 2958#L409-2 assume !false; 2959#L410 assume test_~splverifierCounter~0#1 < 4; 3030#L411 test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 2918#L419 assume !(0 != test_~tmp~4#1); 2920#L419-2 test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 2944#L429 assume !(0 != test_~tmp___0~2#1); 2951#L429-2 test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 3017#L439 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 2977#L447 assume !(0 != test_~tmp___1~0#1); 2953#L447-2 assume { :begin_inline_timeShift } true; 3005#L176 assume !(0 != ~pumpRunning~0); 3006#L176-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 3042#L234 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 3043#L208-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 3082#L141-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2962#L146-1 isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; 2963#L336-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 2936#L336-5 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 3107#L342-1 processEnvironment__wrappee__highWaterSensor_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret9#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1; 3105#L212-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3064#L200-2 assume { :end_inline_processEnvironment__wrappee__base } true; 3063#L208-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3020#L234-1 assume { :end_inline_processEnvironment } true; 3071#L183-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret27#1, __utac_acc__Specification1_spec__1_#t~ret28#1, __utac_acc__Specification1_spec__1_~tmp~6#1, __utac_acc__Specification1_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification1_spec__1_~tmp~6#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~3#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; 3072#L101 __utac_acc__Specification1_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~6#1 := __utac_acc__Specification1_spec__1_#t~ret27#1;havoc __utac_acc__Specification1_spec__1_#t~ret27#1; 2939#L575 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6#1); 2938#L575-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 2992#L193 assume { :end_inline_timeShift } true; 2958#L409-2 [2022-11-20 12:37:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 5 times [2022-11-20 12:37:01,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901745669] [2022-11-20 12:37:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:02,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:02,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:02,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:02,026 INFO L85 PathProgramCache]: Analyzing trace with hash 318171643, now seen corresponding path program 1 times [2022-11-20 12:37:02,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:02,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430172771] [2022-11-20 12:37:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:02,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:02,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430172771] [2022-11-20 12:37:02,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430172771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:02,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:02,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:37:02,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410060532] [2022-11-20 12:37:02,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:02,080 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 12:37:02,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:02,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:37:02,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:37:02,082 INFO L87 Difference]: Start difference. First operand 287 states and 357 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2022-11-20 12:37:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:02,162 INFO L93 Difference]: Finished difference Result 489 states and 605 transitions. [2022-11-20 12:37:02,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 489 states and 605 transitions. [2022-11-20 12:37:02,165 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 358 [2022-11-20 12:37:02,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 489 states to 489 states and 605 transitions. [2022-11-20 12:37:02,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 489 [2022-11-20 12:37:02,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 489 [2022-11-20 12:37:02,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 489 states and 605 transitions. [2022-11-20 12:37:02,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:02,200 INFO L218 hiAutomatonCegarLoop]: Abstraction has 489 states and 605 transitions. [2022-11-20 12:37:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states and 605 transitions. [2022-11-20 12:37:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 287. [2022-11-20 12:37:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 287 states have (on average 1.2229965156794425) internal successors, (351), 286 states have internal predecessors, (351), 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) [2022-11-20 12:37:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 351 transitions. [2022-11-20 12:37:02,206 INFO L240 hiAutomatonCegarLoop]: Abstraction has 287 states and 351 transitions. [2022-11-20 12:37:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:37:02,210 INFO L428 stractBuchiCegarLoop]: Abstraction has 287 states and 351 transitions. [2022-11-20 12:37:02,210 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 12:37:02,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 287 states and 351 transitions. [2022-11-20 12:37:02,212 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 205 [2022-11-20 12:37:02,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:37:02,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:37:02,215 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:02,215 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, 1] [2022-11-20 12:37:02,215 INFO L748 eck$LassoCheckResult]: Stem: 3874#ULTIMATE.startENTRY 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;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 3784#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret26#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 3717#L981 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3718#L974 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 3772#L989 main_#t~ret26#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret26#1;havoc main_#t~ret26#1; 3773#L553 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 3832#L527 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3854#L409-2 [2022-11-20 12:37:02,216 INFO L750 eck$LassoCheckResult]: Loop: 3854#L409-2 assume !false; 3967#L410 assume test_~splverifierCounter~0#1 < 4; 3966#L411 test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 3964#L419 assume !(0 != test_~tmp~4#1); 3962#L419-2 test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 3961#L429 assume !(0 != test_~tmp___0~2#1); 3800#L429-2 test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 3801#L439 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 3761#L447 assume !(0 != test_~tmp___1~0#1); 3739#L447-2 assume { :begin_inline_timeShift } true; 3789#L176 assume !(0 != ~pumpRunning~0); 3790#L176-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 3826#L234 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 3827#L208-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 3867#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 3871#L146-1 isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; 3903#L336-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 3900#L336-5 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 3896#L342-1 processEnvironment__wrappee__highWaterSensor_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret9#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1; 3891#L212-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3845#L200-2 assume { :end_inline_processEnvironment__wrappee__base } true; 3846#L208-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3824#L234-1 assume { :end_inline_processEnvironment } true; 3956#L183-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret27#1, __utac_acc__Specification1_spec__1_#t~ret28#1, __utac_acc__Specification1_spec__1_~tmp~6#1, __utac_acc__Specification1_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification1_spec__1_~tmp~6#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~3#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; 3971#L101 __utac_acc__Specification1_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~6#1 := __utac_acc__Specification1_spec__1_#t~ret27#1;havoc __utac_acc__Specification1_spec__1_#t~ret27#1; 3970#L575 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~6#1); 3969#L575-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 3968#L193 assume { :end_inline_timeShift } true; 3854#L409-2 [2022-11-20 12:37:02,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:02,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 6 times [2022-11-20 12:37:02,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:02,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564523267] [2022-11-20 12:37:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:02,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:02,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:02,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:02,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1329288893, now seen corresponding path program 1 times [2022-11-20 12:37:02,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:02,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037641510] [2022-11-20 12:37:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:02,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:02,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:02,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:02,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash 78306945, now seen corresponding path program 1 times [2022-11-20 12:37:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:02,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308821504] [2022-11-20 12:37:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:02,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:02,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:02,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:37:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:03,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:37:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:37:03,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:37:03 BoogieIcfgContainer [2022-11-20 12:37:03,653 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 12:37:03,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:37:03,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:37:03,654 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:37:03,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:37:00" (3/4) ... [2022-11-20 12:37:03,657 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-20 12:37:03,701 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:37:03,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:37:03,702 INFO L158 Benchmark]: Toolchain (without parser) took 5118.34ms. Allocated memory was 144.7MB in the beginning and 180.4MB in the end (delta: 35.7MB). Free memory was 106.8MB in the beginning and 102.2MB in the end (delta: 4.6MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2022-11-20 12:37:03,702 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:37:03,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.37ms. Allocated memory is still 144.7MB. Free memory was 106.5MB in the beginning and 87.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 12:37:03,703 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.43ms. Allocated memory is still 144.7MB. Free memory was 87.9MB in the beginning and 84.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:37:03,704 INFO L158 Benchmark]: Boogie Preprocessor took 71.71ms. Allocated memory is still 144.7MB. Free memory was 84.8MB in the beginning and 82.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:37:03,704 INFO L158 Benchmark]: RCFGBuilder took 726.94ms. Allocated memory is still 144.7MB. Free memory was 82.4MB in the beginning and 59.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 12:37:03,704 INFO L158 Benchmark]: BuchiAutomizer took 3577.19ms. Allocated memory was 144.7MB in the beginning and 180.4MB in the end (delta: 35.7MB). Free memory was 59.0MB in the beginning and 104.3MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:37:03,705 INFO L158 Benchmark]: Witness Printer took 47.84ms. Allocated memory is still 180.4MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:37:03,707 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.37ms. Allocated memory is still 144.7MB. Free memory was 106.5MB in the beginning and 87.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.43ms. Allocated memory is still 144.7MB. Free memory was 87.9MB in the beginning and 84.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.71ms. Allocated memory is still 144.7MB. Free memory was 84.8MB in the beginning and 82.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 726.94ms. Allocated memory is still 144.7MB. Free memory was 82.4MB in the beginning and 59.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 3577.19ms. Allocated memory was 144.7MB in the beginning and 180.4MB in the end (delta: 35.7MB). Free memory was 59.0MB in the beginning and 104.3MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 47.84ms. Allocated memory is still 180.4MB. Free memory was 104.3MB in the beginning and 102.2MB 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 287 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.4s. Construction of modules took 0.3s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 1114 StatesRemovedByMinimization, 4 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, 2427 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2427 mSDsluCounter, 4104 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2760 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 303 IncrementalHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 1344 mSDtfsCounter, 303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc1 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: 409]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L168] int pumpRunning = 0; [L169] int systemActive = 1; [L468] int cleanupTimeShifts = 4; [L762] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L544] int retValue_acc ; [L545] int tmp ; [L549] FCALL select_helpers() [L550] FCALL select_features() [L551] CALL, EXPR valid_product() [L985] int retValue_acc ; [L988] retValue_acc = 1 [L989] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L551] RET, EXPR valid_product() [L551] tmp = valid_product() [L553] COND TRUE \read(tmp) [L555] FCALL setup() [L556] CALL runTest() [L535] CALL test() [L400] int splverifierCounter ; [L401] int tmp ; [L402] int tmp___0 ; [L403] int tmp___1 ; [L404] int tmp___2 ; [L407] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L409] COND TRUE 1 [L411] COND TRUE splverifierCounter < 4 [L417] tmp = __VERIFIER_nondet_int() [L419] COND FALSE !(\read(tmp)) [L427] tmp___0 = __VERIFIER_nondet_int() [L429] COND FALSE !(\read(tmp___0)) [L437] tmp___2 = __VERIFIER_nondet_int() [L439] COND FALSE !(\read(tmp___2)) [L445] tmp___1 = __VERIFIER_nondet_int() [L447] COND FALSE !(\read(tmp___1)) [L456] CALL timeShift() [L176] COND FALSE !(\read(pumpRunning)) [L183] COND TRUE \read(systemActive) [L185] CALL processEnvironment() [L231] int tmp ; [L234] COND FALSE !(\read(pumpRunning)) [L249] CALL processEnvironment__wrappee__highWaterSensor() [L205] int tmp ; [L208] COND TRUE ! pumpRunning [L210] CALL, EXPR isHighWaterLevel() [L328] int retValue_acc ; [L329] int tmp ; [L330] int tmp___0 ; [L334] CALL, EXPR isHighWaterSensorDry() [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L334] RET, EXPR isHighWaterSensorDry() [L334] tmp = isHighWaterSensorDry() [L336] COND TRUE \read(tmp) [L337] tmp___0 = 0 [L341] retValue_acc = tmp___0 [L342] return (retValue_acc); [L210] RET, EXPR isHighWaterLevel() [L210] tmp = isHighWaterLevel() [L212] COND FALSE !(\read(tmp)) [L218] FCALL processEnvironment__wrappee__base() [L249] RET processEnvironment__wrappee__highWaterSensor() [L185] RET processEnvironment() [L191] CALL __utac_acc__Specification1_spec__1() [L568] int tmp ; [L569] int tmp___0 ; [L573] CALL, EXPR isMethaneLevelCritical() [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L573] RET, EXPR isMethaneLevelCritical() [L573] tmp = isMethaneLevelCritical() [L575] COND FALSE !(\read(tmp)) [L191] RET __utac_acc__Specification1_spec__1() [L456] RET timeShift() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 409]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L168] int pumpRunning = 0; [L169] int systemActive = 1; [L468] int cleanupTimeShifts = 4; [L762] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L544] int retValue_acc ; [L545] int tmp ; [L549] FCALL select_helpers() [L550] FCALL select_features() [L551] CALL, EXPR valid_product() [L985] int retValue_acc ; [L988] retValue_acc = 1 [L989] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L551] RET, EXPR valid_product() [L551] tmp = valid_product() [L553] COND TRUE \read(tmp) [L555] FCALL setup() [L556] CALL runTest() [L535] CALL test() [L400] int splverifierCounter ; [L401] int tmp ; [L402] int tmp___0 ; [L403] int tmp___1 ; [L404] int tmp___2 ; [L407] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L409] COND TRUE 1 [L411] COND TRUE splverifierCounter < 4 [L417] tmp = __VERIFIER_nondet_int() [L419] COND FALSE !(\read(tmp)) [L427] tmp___0 = __VERIFIER_nondet_int() [L429] COND FALSE !(\read(tmp___0)) [L437] tmp___2 = __VERIFIER_nondet_int() [L439] COND FALSE !(\read(tmp___2)) [L445] tmp___1 = __VERIFIER_nondet_int() [L447] COND FALSE !(\read(tmp___1)) [L456] CALL timeShift() [L176] COND FALSE !(\read(pumpRunning)) [L183] COND TRUE \read(systemActive) [L185] CALL processEnvironment() [L231] int tmp ; [L234] COND FALSE !(\read(pumpRunning)) [L249] CALL processEnvironment__wrappee__highWaterSensor() [L205] int tmp ; [L208] COND TRUE ! pumpRunning [L210] CALL, EXPR isHighWaterLevel() [L328] int retValue_acc ; [L329] int tmp ; [L330] int tmp___0 ; [L334] CALL, EXPR isHighWaterSensorDry() [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L334] RET, EXPR isHighWaterSensorDry() [L334] tmp = isHighWaterSensorDry() [L336] COND TRUE \read(tmp) [L337] tmp___0 = 0 [L341] retValue_acc = tmp___0 [L342] return (retValue_acc); [L210] RET, EXPR isHighWaterLevel() [L210] tmp = isHighWaterLevel() [L212] COND FALSE !(\read(tmp)) [L218] FCALL processEnvironment__wrappee__base() [L249] RET processEnvironment__wrappee__highWaterSensor() [L185] RET processEnvironment() [L191] CALL __utac_acc__Specification1_spec__1() [L568] int tmp ; [L569] int tmp___0 ; [L573] CALL, EXPR isMethaneLevelCritical() [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L573] RET, EXPR isMethaneLevelCritical() [L573] tmp = isMethaneLevelCritical() [L575] COND FALSE !(\read(tmp)) [L191] RET __utac_acc__Specification1_spec__1() [L456] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-20 12:37:03,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f2103f2-3d25-463d-aef3-6034dd9b0b82/bin/uautomizer-ug76WZFUDN/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)