./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be --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 db9cad3d4bb6f197e1ca94da7e6c4fb3038f74aed96fd168a277cfa6f57caad2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:38:34,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:38:34,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:38:34,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:38:34,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:38:34,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:38:34,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:38:34,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:38:34,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:38:34,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:38:34,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:38:34,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:38:34,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:38:34,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:38:34,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:38:34,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:38:34,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:38:34,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:38:34,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:38:34,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:38:34,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:38:34,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:38:34,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:38:34,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:38:34,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:38:34,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:38:34,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:38:34,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:38:34,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:38:34,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:38:34,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:38:34,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:38:34,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:38:34,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:38:34,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:38:34,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:38:34,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:38:34,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:38:34,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:38:34,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:38:34,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:38:34,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:38:34,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:38:34,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:38:34,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:38:34,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:38:34,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:38:34,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:38:34,790 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:38:34,790 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:38:34,791 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:38:34,791 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:38:34,792 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:38:34,793 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:38:34,793 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:38:34,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:38:34,793 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:38:34,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:38:34,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:38:34,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:38:34,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:38:34,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:38:34,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:38:34,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:38:34,795 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:38:34,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:38:34,796 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:38:34,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:38:34,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:38:34,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:38:34,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:38:34,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:38:34,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:38:34,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:38:34,802 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:38:34,802 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_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db9cad3d4bb6f197e1ca94da7e6c4fb3038f74aed96fd168a277cfa6f57caad2 [2021-10-21 19:38:35,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:38:35,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:38:35,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:38:35,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:38:35,123 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:38:35,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c [2021-10-21 19:38:35,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/data/57fe5ca13/96a1ce878eec406596145e23fd0ee0ad/FLAG2a28843e2 [2021-10-21 19:38:35,772 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:38:35,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c [2021-10-21 19:38:35,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/data/57fe5ca13/96a1ce878eec406596145e23fd0ee0ad/FLAG2a28843e2 [2021-10-21 19:38:36,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/data/57fe5ca13/96a1ce878eec406596145e23fd0ee0ad [2021-10-21 19:38:36,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:38:36,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:38:36,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:38:36,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:38:36,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:38:36,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1889a436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36, skipping insertion in model container [2021-10-21 19:38:36,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:38:36,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:38:36,586 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c[14935,14948] [2021-10-21 19:38:36,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:38:36,629 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:38:36,704 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c[14935,14948] [2021-10-21 19:38:36,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:38:36,743 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:38:36,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36 WrapperNode [2021-10-21 19:38:36,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:38:36,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:38:36,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:38:36,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:38:36,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:38:36,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:38:36,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:38:36,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:38:36,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:38:36,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:38:36,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:38:36,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:38:36,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (1/1) ... [2021-10-21 19:38:36,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:38:36,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:38:36,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:38:36,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:38:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:38:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:38:37,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:38:37,877 INFO L299 CfgBuilder]: Removed 208 assume(true) statements. [2021-10-21 19:38:37,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:38:37 BoogieIcfgContainer [2021-10-21 19:38:37,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:38:37,881 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:38:37,881 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:38:37,885 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:38:37,886 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:38:37,886 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:38:36" (1/3) ... [2021-10-21 19:38:37,888 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@553c2aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:38:37, skipping insertion in model container [2021-10-21 19:38:37,888 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:38:37,888 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:36" (2/3) ... [2021-10-21 19:38:37,889 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@553c2aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:38:37, skipping insertion in model container [2021-10-21 19:38:37,889 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:38:37,889 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:38:37" (3/3) ... [2021-10-21 19:38:37,891 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2021-10-21 19:38:37,960 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:38:37,960 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:38:37,960 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:38:37,960 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:38:37,960 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:38:37,961 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:38:37,961 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:38:37,961 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:38:37,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 141 states, 140 states have (on average 1.5) internal successors, (210), 140 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:38,036 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2021-10-21 19:38:38,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:38:38,037 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:38:38,045 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:38,045 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:38,045 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:38:38,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 141 states, 140 states have (on average 1.5) internal successors, (210), 140 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:38,058 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2021-10-21 19:38:38,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:38:38,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:38:38,063 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:38,063 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:38,075 INFO L791 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 40#L-1true havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 95#L1008true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 15#L1016true main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 36#L667true assume 0 != main_~tmp~4; 34#L639true ~switchedOnBeforeTS~0 := 0; 54#L169true havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 98#L190-1true [2021-10-21 19:38:38,076 INFO L793 eck$LassoCheckResult]: Loop: 98#L190-1true assume !false; 24#L702true assume test_~splverifierCounter~0 < 4; 14#L703true test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 41#L711true assume !(0 != test_~tmp~5); 111#L711-1true test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 83#L721true assume !(0 != test_~tmp___0~1); 50#L721-1true test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 97#L731true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 114#L739-2true havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 42#L899true __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 133#L179true assume !(0 != ~pumpRunning~0); 46#L770true assume !(0 != ~systemActive~0); 25#L777true havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 112#L133true __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 59#L190true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 98#L190-1true [2021-10-21 19:38:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 19:38:38,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:38,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722637794] [2021-10-21 19:38:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:38,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:38,303 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:38:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:38,512 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:38:38,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:38,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1013869901, now seen corresponding path program 1 times [2021-10-21 19:38:38,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:38,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646280119] [2021-10-21 19:38:38,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:38,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:38,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:38,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646280119] [2021-10-21 19:38:38,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646280119] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:38,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:38,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:38:38,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271131352] [2021-10-21 19:38:38,587 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:38:38,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:38:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:38:38,606 INFO L87 Difference]: Start difference. First operand has 141 states, 140 states have (on average 1.5) internal successors, (210), 140 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:38:38,646 INFO L93 Difference]: Finished difference Result 141 states and 200 transitions. [2021-10-21 19:38:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:38:38,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 141 states and 200 transitions. [2021-10-21 19:38:38,651 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-10-21 19:38:38,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 141 states to 134 states and 192 transitions. [2021-10-21 19:38:38,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-21 19:38:38,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-10-21 19:38:38,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 192 transitions. [2021-10-21 19:38:38,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:38,660 INFO L681 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-10-21 19:38:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states and 192 transitions. [2021-10-21 19:38:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-21 19:38:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4328358208955223) internal successors, (192), 133 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 192 transitions. [2021-10-21 19:38:38,696 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-10-21 19:38:38,696 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-10-21 19:38:38,696 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:38:38,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 192 transitions. [2021-10-21 19:38:38,698 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-10-21 19:38:38,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:38:38,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:38:38,699 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:38,699 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:38,699 INFO L791 eck$LassoCheckResult]: Stem: 421#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 357#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 358#L1008 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 313#L1016 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 314#L667 assume 0 != main_~tmp~4; 347#L639 ~switchedOnBeforeTS~0 := 0; 348#L169 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 376#L190-1 [2021-10-21 19:38:38,700 INFO L793 eck$LassoCheckResult]: Loop: 376#L190-1 assume !false; 333#L702 assume test_~splverifierCounter~0 < 4; 311#L703 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 312#L711 assume !(0 != test_~tmp~5); 360#L711-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 403#L721 assume !(0 != test_~tmp___0~1); 372#L721-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 373#L731 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 294#L739-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 361#L899 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 362#L179 assume !(0 != ~pumpRunning~0); 320#L770 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 367#L828 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 378#L802-1 assume !(0 == ~pumpRunning~0); 296#L777 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 334#L133 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 381#L190 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 376#L190-1 [2021-10-21 19:38:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 19:38:38,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:38,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765969172] [2021-10-21 19:38:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:38,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:38,804 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:38:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:38,917 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:38:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:38,922 INFO L82 PathProgramCache]: Analyzing trace with hash 385675286, now seen corresponding path program 1 times [2021-10-21 19:38:38,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:38,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344696364] [2021-10-21 19:38:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:38,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:38,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:38,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344696364] [2021-10-21 19:38:38,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344696364] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:38,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:38,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:38:38,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060673262] [2021-10-21 19:38:38,975 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:38:38,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:38:38,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:38:38,979 INFO L87 Difference]: Start difference. First operand 134 states and 192 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:38:39,150 INFO L93 Difference]: Finished difference Result 183 states and 251 transitions. [2021-10-21 19:38:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:38:39,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 251 transitions. [2021-10-21 19:38:39,154 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-10-21 19:38:39,157 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 183 states and 251 transitions. [2021-10-21 19:38:39,157 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 183 [2021-10-21 19:38:39,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2021-10-21 19:38:39,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 251 transitions. [2021-10-21 19:38:39,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:39,160 INFO L681 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2021-10-21 19:38:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states and 251 transitions. [2021-10-21 19:38:39,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-10-21 19:38:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 183 states have (on average 1.3715846994535519) internal successors, (251), 182 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 251 transitions. [2021-10-21 19:38:39,176 INFO L704 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2021-10-21 19:38:39,177 INFO L587 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2021-10-21 19:38:39,177 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:38:39,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 183 states and 251 transitions. [2021-10-21 19:38:39,184 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-10-21 19:38:39,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:38:39,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:38:39,190 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:39,193 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:39,193 INFO L791 eck$LassoCheckResult]: Stem: 752#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 682#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 683#L1008 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 637#L1016 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 638#L667 assume 0 != main_~tmp~4; 672#L639 ~switchedOnBeforeTS~0 := 0; 673#L169 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 705#L190-1 [2021-10-21 19:38:39,194 INFO L793 eck$LassoCheckResult]: Loop: 705#L190-1 assume !false; 656#L702 assume test_~splverifierCounter~0 < 4; 657#L703 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 796#L711 assume !(0 != test_~tmp~5); 794#L711-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 793#L721 assume !(0 != test_~tmp___0~1); 791#L721-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 790#L731 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 788#L739-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 686#L899 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 687#L179 assume !(0 != ~pumpRunning~0); 693#L770 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 694#L828 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 707#L802-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret80, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 708#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 645#L146-1 isHighWaterLevel_#t~ret80 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret80;havoc isHighWaterLevel_#t~ret80; 646#L948-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 695#L948-5 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 696#L954-1 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 712#L806-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 619#L777 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 658#L133 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 710#L190 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 705#L190-1 [2021-10-21 19:38:39,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:39,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 19:38:39,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:39,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966257343] [2021-10-21 19:38:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:39,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:39,282 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:38:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:39,329 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:38:39,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:39,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1093023170, now seen corresponding path program 1 times [2021-10-21 19:38:39,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:39,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393043209] [2021-10-21 19:38:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:39,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:39,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:39,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393043209] [2021-10-21 19:38:39,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393043209] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:39,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:39,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:38:39,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437490922] [2021-10-21 19:38:39,364 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:38:39,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:38:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:38:39,365 INFO L87 Difference]: Start difference. First operand 183 states and 251 transitions. cyclomatic complexity: 70 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:39,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:38:39,575 INFO L93 Difference]: Finished difference Result 517 states and 697 transitions. [2021-10-21 19:38:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:38:39,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 517 states and 697 transitions. [2021-10-21 19:38:39,584 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 331 [2021-10-21 19:38:39,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 517 states to 517 states and 697 transitions. [2021-10-21 19:38:39,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 517 [2021-10-21 19:38:39,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 517 [2021-10-21 19:38:39,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 517 states and 697 transitions. [2021-10-21 19:38:39,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:39,604 INFO L681 BuchiCegarLoop]: Abstraction has 517 states and 697 transitions. [2021-10-21 19:38:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states and 697 transitions. [2021-10-21 19:38:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 359. [2021-10-21 19:38:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 359 states have (on average 1.33983286908078) internal successors, (481), 358 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2021-10-21 19:38:39,647 INFO L704 BuchiCegarLoop]: Abstraction has 359 states and 481 transitions. [2021-10-21 19:38:39,647 INFO L587 BuchiCegarLoop]: Abstraction has 359 states and 481 transitions. [2021-10-21 19:38:39,647 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:38:39,647 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 359 states and 481 transitions. [2021-10-21 19:38:39,660 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 252 [2021-10-21 19:38:39,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:38:39,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:38:39,661 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:39,662 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:39,662 INFO L791 eck$LassoCheckResult]: Stem: 1469#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1398#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 1399#L1008 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1353#L1016 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 1354#L667 assume 0 != main_~tmp~4; 1388#L639 ~switchedOnBeforeTS~0 := 0; 1389#L169 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1421#L190-1 [2021-10-21 19:38:39,662 INFO L793 eck$LassoCheckResult]: Loop: 1421#L190-1 assume !false; 1373#L702 assume test_~splverifierCounter~0 < 4; 1374#L703 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 1687#L711 assume !(0 != test_~tmp~5); 1686#L711-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 1685#L721 assume !(0 != test_~tmp___0~1); 1683#L721-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 1682#L731 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1680#L739-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 1679#L899 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 1678#L179 assume !(0 != ~pumpRunning~0); 1408#L770 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1409#L828 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1422#L802-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret80, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1423#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1361#L146-1 isHighWaterLevel_#t~ret80 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret80;havoc isHighWaterLevel_#t~ret80; 1362#L948-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 1410#L948-5 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 1411#L954-1 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 1428#L806-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1335#L777 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1372#L133 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 1426#L190 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 1427#L899-1 __utac_acc__Specification5_spec__3_#t~ret19 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret19;havoc __utac_acc__Specification5_spec__3_#t~ret19; 1457#L194 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1421#L190-1 [2021-10-21 19:38:39,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:39,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-21 19:38:39,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:39,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346202047] [2021-10-21 19:38:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:39,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:39,694 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:38:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:39,757 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:38:39,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:39,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1871732579, now seen corresponding path program 1 times [2021-10-21 19:38:39,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:39,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672433043] [2021-10-21 19:38:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:39,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:39,765 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:38:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:39,775 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:38:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:39,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1935158761, now seen corresponding path program 1 times [2021-10-21 19:38:39,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:39,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268118636] [2021-10-21 19:38:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:39,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:39,811 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:38:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:39,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:39:41,395 WARN L207 SmtUtils]: Spent 1.02 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 19:40:44,562 WARN L207 SmtUtils]: Spent 29.70 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 19:40:44,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:40:44 BoogieIcfgContainer [2021-10-21 19:40:44,679 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:40:44,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:40:44,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:40:44,680 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:40:44,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:38:37" (3/4) ... [2021-10-21 19:40:44,684 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:40:44,761 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:40:44,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:40:44,763 INFO L168 Benchmark]: Toolchain (without parser) took 128683.88 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 47.0 MB in the beginning and 86.3 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:44,763 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:44,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.56 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 46.7 MB in the beginning and 71.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:44,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.99 ms. Allocated memory is still 102.8 MB. Free memory was 71.0 MB in the beginning and 67.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:44,766 INFO L168 Benchmark]: Boogie Preprocessor took 64.75 ms. Allocated memory is still 102.8 MB. Free memory was 66.8 MB in the beginning and 64.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:44,767 INFO L168 Benchmark]: RCFGBuilder took 993.46 ms. Allocated memory is still 102.8 MB. Free memory was 64.2 MB in the beginning and 61.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:44,767 INFO L168 Benchmark]: BuchiAutomizer took 126798.33 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 61.6 MB in the beginning and 89.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:44,768 INFO L168 Benchmark]: Witness Printer took 81.83 ms. Allocated memory is still 123.7 MB. Free memory was 89.4 MB in the beginning and 86.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:44,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 657.56 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 46.7 MB in the beginning and 71.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.99 ms. Allocated memory is still 102.8 MB. Free memory was 71.0 MB in the beginning and 67.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.75 ms. Allocated memory is still 102.8 MB. Free memory was 66.8 MB in the beginning and 64.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 993.46 ms. Allocated memory is still 102.8 MB. Free memory was 64.2 MB in the beginning and 61.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 126798.33 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 61.6 MB in the beginning and 89.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. * Witness Printer took 81.83 ms. Allocated memory is still 123.7 MB. Free memory was 89.4 MB in the beginning and 86.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 359 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 126.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 125.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 79.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 158 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 359 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 655 SDtfs, 971 SDslu, 714 SDs, 0 SdLazy, 137 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 218.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 701]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=26080} State at position 1 is {NULL=0, NULL=26084, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b1903ab=0, NULL=26080, NULL=26096, NULL=0, NULL=0, NULL=26091, retValue_acc=1, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e996837=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d7d4a45=0, tmp=0, NULL=0, tmp___1=0, NULL=0, NULL=26092, cleanupTimeShifts=4, NULL=26105, NULL=26086, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, \result=1, NULL=0, NULL=0, NULL=0, NULL=26099, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=26093, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70dba70b=0, tmp=0, NULL=0, NULL=26104, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ecc2ca7=0, NULL=0, NULL=0, retValue_acc=0, NULL=26090, NULL=0, NULL=26085, tmp___0=0, NULL=0, NULL=0, NULL=26100, tmp=1, NULL=0, NULL=0, switchedOnBeforeTS=0, NULL=26108, tmp=0, \result=0, NULL=0, systemActive=1, NULL=26101, \result=1, NULL=0, NULL=26087, \result=0, NULL=0, NULL=26103, NULL=0, NULL=0, NULL=26081, tmp___0=0, NULL=26106, \result=0, NULL=26097, NULL=0, NULL=0, NULL=26102, NULL=26107, NULL=26089, NULL=26082, tmp___2=70, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b11ca35=0, NULL=26083, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b9d5a66=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@724bf4c4=70, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39b515b3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7dba50ac=0, NULL=26088, NULL=26094, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e879271=0, NULL=0, NULL=26095, NULL=26098} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L163] int switchedOnBeforeTS ; [L381] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L578] int cleanupTimeShifts = 4; [L760] int pumpRunning = 0; [L761] int systemActive = 1; [L658] int retValue_acc ; [L659] int tmp ; [L1012] int retValue_acc ; [L1015] retValue_acc = 1 [L1016] return (retValue_acc); [L665] tmp = valid_product() [L667] COND TRUE \read(tmp) [L168] switchedOnBeforeTS = 0 [L692] int splverifierCounter ; [L693] int tmp ; [L694] int tmp___0 ; [L695] int tmp___1 ; [L696] int tmp___2 ; [L699] splverifierCounter = 0 Loop: [L701] COND TRUE 1 [L703] COND TRUE splverifierCounter < 4 [L709] tmp = __VERIFIER_nondet_int() [L711] COND FALSE !(\read(tmp)) [L719] tmp___0 = __VERIFIER_nondet_int() [L721] COND FALSE !(\read(tmp___0)) [L729] tmp___2 = __VERIFIER_nondet_int() [L731] COND TRUE \read(tmp___2) [L981] systemActive = 1 [L895] int retValue_acc ; [L898] retValue_acc = pumpRunning [L899] return (retValue_acc); [L177] switchedOnBeforeTS = isPumpRunning() [L770] COND FALSE !(\read(pumpRunning)) [L777] COND TRUE \read(systemActive) [L825] int tmp ; [L828] COND FALSE !(\read(pumpRunning)) [L799] int tmp ; [L802] COND TRUE ! pumpRunning [L940] int retValue_acc ; [L941] int tmp ; [L942] int tmp___0 ; [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L946] tmp = isHighWaterSensorDry() [L948] COND TRUE \read(tmp) [L949] tmp___0 = 0 [L953] retValue_acc = tmp___0 [L954] return (retValue_acc); [L804] tmp = isHighWaterLevel() [L806] COND FALSE !(\read(tmp)) [L183] int tmp ; [L184] int tmp___0 ; [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L188] tmp = getWaterLevel() [L190] COND TRUE tmp != 2 [L895] int retValue_acc ; [L898] retValue_acc = pumpRunning [L899] return (retValue_acc); [L192] tmp___0 = isPumpRunning() [L194] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:40:44,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f0f0e3-af0a-4cf8-843a-800268183782/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...