./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg --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 0552f986eafe304f33f56d4376c7c6a56e2d691e1035259c5c13e13b2a7157c1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-b2eff8b [2021-10-28 09:35:21,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:35:21,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:35:21,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:35:21,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:35:21,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:35:21,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:35:21,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:35:21,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:35:21,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:35:21,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:35:21,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:35:21,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:35:21,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:35:21,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:35:21,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:35:21,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:35:21,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:35:21,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:35:21,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:35:21,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:35:21,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:35:21,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:35:21,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:35:21,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:35:21,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:35:21,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:35:21,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:35:21,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:35:21,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:35:21,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:35:21,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:35:21,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:35:21,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:35:21,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:35:21,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:35:21,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:35:21,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:35:21,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:35:21,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:35:21,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:35:21,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:35:21,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:35:21,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:35:21,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:35:21,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:35:21,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:35:21,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:35:21,974 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:35:21,974 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:35:21,974 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:35:21,975 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:35:21,975 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:35:21,975 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:35:21,975 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:35:21,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:35:21,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:35:21,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:35:21,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:35:21,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:35:21,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:35:21,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:35:21,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:35:21,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:35:21,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:35:21,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:35:21,979 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:35:21,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:35:21,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:35:21,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:35:21,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:35:21,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:35:21,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:35:21,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:35:21,983 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:35:21,983 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_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0552f986eafe304f33f56d4376c7c6a56e2d691e1035259c5c13e13b2a7157c1 [2021-10-28 09:35:22,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:35:22,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:35:22,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:35:22,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:35:22,362 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:35:22,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2021-10-28 09:35:22,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/data/3c2bd3a52/f82b1e20112b4d21a1a7a498cb324182/FLAG98b87f087 [2021-10-28 09:35:23,084 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:35:23,084 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2021-10-28 09:35:23,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/data/3c2bd3a52/f82b1e20112b4d21a1a7a498cb324182/FLAG98b87f087 [2021-10-28 09:35:23,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/data/3c2bd3a52/f82b1e20112b4d21a1a7a498cb324182 [2021-10-28 09:35:23,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:35:23,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:35:23,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:35:23,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:35:23,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:35:23,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:23" (1/1) ... [2021-10-28 09:35:23,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c5bbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:23, skipping insertion in model container [2021-10-28 09:35:23,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:23" (1/1) ... [2021-10-28 09:35:23,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:35:23,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:35:23,926 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_e7be259c-6d23-4a1f-9a7a-f8438b189533/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c[15143,15156] [2021-10-28 09:35:23,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:35:23,965 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:35:24,038 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_e7be259c-6d23-4a1f-9a7a-f8438b189533/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c[15143,15156] [2021-10-28 09:35:24,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:35:24,080 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:35:24,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24 WrapperNode [2021-10-28 09:35:24,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:35:24,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:35:24,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:35:24,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:35:24,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:35:24,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:35:24,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:35:24,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:35:24,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:35:24,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:35:24,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:35:24,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:35:24,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (1/1) ... [2021-10-28 09:35:24,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:35:24,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:35:24,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:35:24,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:35:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:35:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:35:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:35:24,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:35:25,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:35:25,633 INFO L299 CfgBuilder]: Removed 164 assume(true) statements. [2021-10-28 09:35:25,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:25 BoogieIcfgContainer [2021-10-28 09:35:25,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:35:25,638 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:35:25,638 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:35:25,642 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:35:25,643 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:35:25,644 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:35:23" (1/3) ... [2021-10-28 09:35:25,646 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c181143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:35:25, skipping insertion in model container [2021-10-28 09:35:25,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:35:25,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:24" (2/3) ... [2021-10-28 09:35:25,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c181143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:35:25, skipping insertion in model container [2021-10-28 09:35:25,647 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:35:25,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:25" (3/3) ... [2021-10-28 09:35:25,649 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2021-10-28 09:35:25,704 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:35:25,704 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:35:25,705 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:35:25,705 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:35:25,705 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:35:25,705 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:35:25,706 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:35:25,706 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:35:25,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 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) [2021-10-28 09:35:25,764 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-28 09:35:25,765 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:35:25,765 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:35:25,775 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:35:25,776 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:35:25,776 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:35:25,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 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) [2021-10-28 09:35:25,787 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-28 09:35:25,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:35:25,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:35:25,789 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:35:25,789 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:35:25,796 INFO L791 eck$LassoCheckResult]: Stem: 110#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);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);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 29#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; 51#L687true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 116#L695true main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 105#L651true assume 0 != main_~tmp~4; 33#L624true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 117#L435-1true [2021-10-28 09:35:25,797 INFO L793 eck$LassoCheckResult]: Loop: 117#L435-1true assume !false; 79#L721true assume test_~splverifierCounter~0 < 4; 61#L722true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 52#L730true assume !(0 != test_~tmp~5); 102#L730-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 42#L740true assume !(0 != test_~tmp___0~1); 103#L740-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 96#L750true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 5#L758-2true assume !(0 != ~pumpRunning~0); 14#L786true assume !(0 != ~systemActive~0); 31#L793true havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 64#L503true __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 77#L429true assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 117#L435-1true [2021-10-28 09:35:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 09:35:25,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:25,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340284618] [2021-10-28 09:35:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:25,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:26,143 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:35:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:26,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:35:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1678820874, now seen corresponding path program 1 times [2021-10-28 09:35:26,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:26,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318146798] [2021-10-28 09:35:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:26,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:35:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:35:26,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:35:26,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318146798] [2021-10-28 09:35:26,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318146798] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:35:26,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:35:26,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:35:26,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272099554] [2021-10-28 09:35:26,467 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:35:26,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:35:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:35:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:35:26,488 INFO L87 Difference]: Start difference. First operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 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 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-10-28 09:35:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:35:26,562 INFO L93 Difference]: Finished difference Result 120 states and 173 transitions. [2021-10-28 09:35:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:35:26,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 173 transitions. [2021-10-28 09:35:26,571 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-10-28 09:35:26,578 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 113 states and 165 transitions. [2021-10-28 09:35:26,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2021-10-28 09:35:26,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2021-10-28 09:35:26,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 165 transitions. [2021-10-28 09:35:26,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:35:26,583 INFO L681 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-10-28 09:35:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states and 165 transitions. [2021-10-28 09:35:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-28 09:35:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 113 states have (on average 1.4601769911504425) internal successors, (165), 112 states have internal predecessors, (165), 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) [2021-10-28 09:35:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-10-28 09:35:26,627 INFO L704 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-10-28 09:35:26,628 INFO L587 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-10-28 09:35:26,628 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:35:26,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 113 states and 165 transitions. [2021-10-28 09:35:26,631 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-10-28 09:35:26,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:35:26,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:35:26,632 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:35:26,632 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:35:26,632 INFO L791 eck$LassoCheckResult]: Stem: 361#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);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);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 295#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; 296#L687 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 325#L695 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 359#L651 assume 0 != main_~tmp~4; 302#L624 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 303#L435-1 [2021-10-28 09:35:26,633 INFO L793 eck$LassoCheckResult]: Loop: 303#L435-1 assume !false; 348#L721 assume test_~splverifierCounter~0 < 4; 336#L722 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 326#L730 assume !(0 != test_~tmp~5); 328#L730-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 312#L740 assume !(0 != test_~tmp___0~1); 275#L740-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 357#L750 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 252#L758-2 assume !(0 != ~pumpRunning~0); 253#L786 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 269#L844 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 342#L818-1 assume !(0 == ~pumpRunning~0); 299#L793 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 300#L503 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 339#L429 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 303#L435-1 [2021-10-28 09:35:26,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:26,634 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 09:35:26,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:26,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824029964] [2021-10-28 09:35:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:26,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:26,741 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:35:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:26,879 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:35:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1079829900, now seen corresponding path program 1 times [2021-10-28 09:35:26,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:26,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976354096] [2021-10-28 09:35:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:26,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:35:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:35:26,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:35:26,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976354096] [2021-10-28 09:35:26,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976354096] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:35:26,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:35:26,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:35:26,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354351856] [2021-10-28 09:35:26,907 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:35:26,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:35:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:35:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:35:26,909 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. cyclomatic complexity: 54 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) [2021-10-28 09:35:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:35:27,057 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2021-10-28 09:35:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:35:27,059 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 222 transitions. [2021-10-28 09:35:27,062 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-10-28 09:35:27,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 160 states and 222 transitions. [2021-10-28 09:35:27,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 160 [2021-10-28 09:35:27,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 160 [2021-10-28 09:35:27,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 222 transitions. [2021-10-28 09:35:27,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:35:27,078 INFO L681 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-10-28 09:35:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 222 transitions. [2021-10-28 09:35:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-28 09:35:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 160 states have (on average 1.3875) internal successors, (222), 159 states have internal predecessors, (222), 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) [2021-10-28 09:35:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 222 transitions. [2021-10-28 09:35:27,106 INFO L704 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-10-28 09:35:27,106 INFO L587 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-10-28 09:35:27,106 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:35:27,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 160 states and 222 transitions. [2021-10-28 09:35:27,114 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-10-28 09:35:27,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:35:27,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:35:27,116 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:35:27,116 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] [2021-10-28 09:35:27,117 INFO L791 eck$LassoCheckResult]: Stem: 642#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);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);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 574#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; 575#L687 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 604#L695 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 639#L651 assume 0 != main_~tmp~4; 581#L624 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 582#L435-1 [2021-10-28 09:35:27,118 INFO L793 eck$LassoCheckResult]: Loop: 582#L435-1 assume !false; 628#L721 assume test_~splverifierCounter~0 < 4; 614#L722 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 605#L730 assume !(0 != test_~tmp~5); 607#L730-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 591#L740 assume !(0 != test_~tmp___0~1); 554#L740-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 636#L750 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 530#L758-2 assume !(0 != ~pumpRunning~0); 531#L786 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 547#L844 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 619#L818-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret80, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 630#L543-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 633#L548-1 isHighWaterLevel_#t~ret80 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret80;havoc isHighWaterLevel_#t~ret80; 635#L946-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~2 := 0; 624#L946-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 625#L952-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 632#L822-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 578#L793 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 579#L503 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 617#L429 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 582#L435-1 [2021-10-28 09:35:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:27,119 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 09:35:27,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:27,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712146985] [2021-10-28 09:35:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:27,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:27,179 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:35:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:27,299 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:35:27,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash -246413056, now seen corresponding path program 1 times [2021-10-28 09:35:27,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:27,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599038283] [2021-10-28 09:35:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:27,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:27,309 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:35:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:27,319 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:35:27,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:27,320 INFO L85 PathProgramCache]: Analyzing trace with hash 209658138, now seen corresponding path program 1 times [2021-10-28 09:35:27,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:27,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131726479] [2021-10-28 09:35:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:27,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:35:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:35:27,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:35:27,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131726479] [2021-10-28 09:35:27,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131726479] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:35:27,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:35:27,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:35:27,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046494148] [2021-10-28 09:35:27,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:35:27,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:35:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:35:27,774 INFO L87 Difference]: Start difference. First operand 160 states and 222 transitions. cyclomatic complexity: 64 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-10-28 09:35:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:35:27,946 INFO L93 Difference]: Finished difference Result 555 states and 776 transitions. [2021-10-28 09:35:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:35:27,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 555 states and 776 transitions. [2021-10-28 09:35:27,957 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 408 [2021-10-28 09:35:27,967 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 555 states to 555 states and 776 transitions. [2021-10-28 09:35:27,968 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 555 [2021-10-28 09:35:27,971 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 555 [2021-10-28 09:35:27,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 555 states and 776 transitions. [2021-10-28 09:35:27,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:35:27,981 INFO L681 BuchiCegarLoop]: Abstraction has 555 states and 776 transitions. [2021-10-28 09:35:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states and 776 transitions. [2021-10-28 09:35:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 314. [2021-10-28 09:35:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 314 states have (on average 1.3694267515923566) internal successors, (430), 313 states have internal predecessors, (430), 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) [2021-10-28 09:35:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 430 transitions. [2021-10-28 09:35:28,013 INFO L704 BuchiCegarLoop]: Abstraction has 314 states and 430 transitions. [2021-10-28 09:35:28,013 INFO L587 BuchiCegarLoop]: Abstraction has 314 states and 430 transitions. [2021-10-28 09:35:28,013 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:35:28,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 314 states and 430 transitions. [2021-10-28 09:35:28,016 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 220 [2021-10-28 09:35:28,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:35:28,017 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:35:28,018 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:35:28,018 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] [2021-10-28 09:35:28,018 INFO L791 eck$LassoCheckResult]: Stem: 1398#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);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);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1310#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; 1311#L687 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1341#L695 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 1394#L651 assume 0 != main_~tmp~4; 1315#L624 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1316#L435-1 [2021-10-28 09:35:28,018 INFO L793 eck$LassoCheckResult]: Loop: 1316#L435-1 assume !false; 1566#L721 assume test_~splverifierCounter~0 < 4; 1567#L722 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1574#L730 assume !(0 != test_~tmp~5); 1572#L730-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 1571#L740 assume !(0 != test_~tmp___0~1); 1570#L740-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1569#L750 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1263#L758-2 assume !(0 != ~pumpRunning~0); 1264#L786 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1280#L844 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1363#L818-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret80, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1378#L543-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1382#L548-1 isHighWaterLevel_#t~ret80 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret80;havoc isHighWaterLevel_#t~ret80; 1387#L946-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~2 := 0; 1368#L946-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1369#L952-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1381#L822-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1323#L793 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1358#L503 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 1359#L429 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~3);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 1376#L535 __utac_acc__Specification3_spec__1_#t~ret43 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret43;havoc __utac_acc__Specification3_spec__1_#t~ret43; 1377#L435 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1316#L435-1 [2021-10-28 09:35:28,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 09:35:28,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:28,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960838810] [2021-10-28 09:35:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:28,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:28,066 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:35:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:28,186 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:35:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash -579737614, now seen corresponding path program 1 times [2021-10-28 09:35:28,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:28,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258131709] [2021-10-28 09:35:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:28,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:28,195 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:35:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:28,206 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:35:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash -381984372, now seen corresponding path program 1 times [2021-10-28 09:35:28,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:28,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522255053] [2021-10-28 09:35:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:28,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:28,276 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:35:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:28,351 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:36:31,196 WARN L207 SmtUtils]: Spent 1.04 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 09:37:29,238 WARN L207 SmtUtils]: Spent 28.44 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 09:37:29,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:37:29 BoogieIcfgContainer [2021-10-28 09:37:29,350 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:37:29,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:37:29,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:37:29,351 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:37:29,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:25" (3/4) ... [2021-10-28 09:37:29,354 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:37:29,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:37:29,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:37:29,420 INFO L168 Benchmark]: Toolchain (without parser) took 126016.01 ms. Allocated memory was 94.4 MB in the beginning and 195.0 MB in the end (delta: 100.7 MB). Free memory was 58.6 MB in the beginning and 135.0 MB in the end (delta: -76.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:37:29,421 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 67.0 MB in the beginning and 67.0 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:37:29,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.82 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 62.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:37:29,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.19 ms. Allocated memory is still 94.4 MB. Free memory was 62.2 MB in the beginning and 58.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:37:29,422 INFO L168 Benchmark]: Boogie Preprocessor took 104.32 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 55.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:37:29,423 INFO L168 Benchmark]: RCFGBuilder took 1352.40 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 55.9 MB in the beginning and 89.2 MB in the end (delta: -33.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:37:29,423 INFO L168 Benchmark]: BuchiAutomizer took 123712.20 ms. Allocated memory was 136.3 MB in the beginning and 195.0 MB in the end (delta: 58.7 MB). Free memory was 89.0 MB in the beginning and 138.1 MB in the end (delta: -49.1 MB). Peak memory consumption was 102.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:37:29,424 INFO L168 Benchmark]: Witness Printer took 69.07 ms. Allocated memory is still 195.0 MB. Free memory was 138.1 MB in the beginning and 135.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:37:29,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 67.0 MB in the beginning and 67.0 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 671.82 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 62.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.19 ms. Allocated memory is still 94.4 MB. Free memory was 62.2 MB in the beginning and 58.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.32 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 55.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1352.40 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 55.9 MB in the beginning and 89.2 MB in the end (delta: -33.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 123712.20 ms. Allocated memory was 136.3 MB in the beginning and 195.0 MB in the end (delta: 58.7 MB). Free memory was 89.0 MB in the beginning and 138.1 MB in the end (delta: -49.1 MB). Peak memory consumption was 102.3 MB. Max. memory is 16.1 GB. * Witness Printer took 69.07 ms. Allocated memory is still 195.0 MB. Free memory was 138.1 MB in the beginning and 135.0 MB in the end (delta: 3.1 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 314 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 123.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 122.9s. Construction of modules took 0.1s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 241 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 314 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 569 SDtfs, 954 SDslu, 855 SDs, 0 SdLazy, 76 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 720]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=15554} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ecd1f03=0, NULL=0, NULL=15554, NULL=15559, NULL=15580, NULL=15578, methaneLevelCritical=0, tmp=0, NULL=0, tmp___1=0, NULL=15561, NULL=0, NULL=15564, NULL=15565, cleanupTimeShifts=4, tmp=0, NULL=0, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=15570, NULL=0, tmp=1, NULL=0, retValue_acc=1, NULL=15560, tmp___0=0, NULL=15556, NULL=15574, head=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5be5300c=0, NULL=15558, tmp=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@763ff0c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1dbce0ed=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3cf0477d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b403634=0, retValue_acc=0, NULL=15579, NULL=15557, tmp___0=0, NULL=0, NULL=0, NULL=0, tmp___0=1, NULL=15562, NULL=15563, NULL=15555, NULL=15567, tmp=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=15569, \result=1, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=15582, \result=0, NULL=15575, NULL=15577, NULL=15566, NULL=15571, retValue_acc=1, NULL=15568, NULL=15576, tmp___2=83, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c4061e1=0, \result=0, NULL=15581, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c8678bb=83, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@309803ca=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2dcbaf5c=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@449f94a2=0, NULL=15572, NULL=0, NULL=15573} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L460] int waterLevel = 1; [L461] int methaneLevelCritical = 0; [L563] int cleanupTimeShifts = 4; [L779] int pumpRunning = 0; [L780] int systemActive = 1; [L642] int retValue_acc ; [L643] int tmp ; [L691] int retValue_acc ; [L694] retValue_acc = 1 [L695] return (retValue_acc); [L649] tmp = valid_product() [L651] COND TRUE \read(tmp) [L711] int splverifierCounter ; [L712] int tmp ; [L713] int tmp___0 ; [L714] int tmp___1 ; [L715] int tmp___2 ; [L718] splverifierCounter = 0 Loop: [L720] COND TRUE 1 [L722] COND TRUE splverifierCounter < 4 [L728] tmp = __VERIFIER_nondet_int() [L730] COND FALSE !(\read(tmp)) [L738] tmp___0 = __VERIFIER_nondet_int() [L740] COND FALSE !(\read(tmp___0)) [L748] tmp___2 = __VERIFIER_nondet_int() [L750] COND TRUE \read(tmp___2) [L979] systemActive = 1 [L786] COND FALSE !(\read(pumpRunning)) [L793] COND TRUE \read(systemActive) [L841] int tmp ; [L844] COND FALSE !(\read(pumpRunning)) [L815] int tmp ; [L818] COND TRUE ! pumpRunning [L938] int retValue_acc ; [L939] int tmp ; [L940] int tmp___0 ; [L540] int retValue_acc ; [L543] COND TRUE waterLevel < 2 [L544] retValue_acc = 1 [L545] return (retValue_acc); [L944] tmp = isHighWaterSensorDry() [L946] COND TRUE \read(tmp) [L947] tmp___0 = 0 [L951] retValue_acc = tmp___0 [L952] return (retValue_acc); [L820] tmp = isHighWaterLevel() [L822] COND FALSE !(\read(tmp)) [L421] int tmp ; [L422] int tmp___0 ; [L423] int tmp___1 ; [L499] int retValue_acc ; [L502] retValue_acc = methaneLevelCritical [L503] return (retValue_acc); [L427] tmp = isMethaneLevelCritical() [L429] COND FALSE !(\read(tmp)) [L531] int retValue_acc ; [L534] retValue_acc = waterLevel [L535] return (retValue_acc); [L433] tmp___0 = getWaterLevel() [L435] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:37:29,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7be259c-6d23-4a1f-9a7a-f8438b189533/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...