./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product56.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_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/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_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/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_447c8691-6449-4a6f-9801-ab432fa908fd/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 7bcd24ea8f621c8db79e853f5aaf064ffcae573e6c1e9f03eb1f84bb0c15fc3c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:54:20,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:54:20,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:54:20,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:54:20,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:54:20,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:54:20,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:54:20,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:54:20,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:54:20,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:54:20,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:54:20,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:54:20,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:54:20,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:54:20,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:54:20,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:54:20,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:54:20,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:54:20,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:54:20,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:54:20,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:54:20,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:54:20,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:54:20,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:54:20,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:54:20,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:54:20,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:54:20,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:54:20,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:54:20,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:54:20,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:54:20,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:54:20,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:54:20,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:54:20,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:54:20,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:54:20,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:54:20,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:54:20,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:54:20,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:54:20,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:54:20,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:54:20,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:54:20,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:54:20,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:54:20,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:54:20,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:54:20,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:54:20,973 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:54:20,973 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:54:20,974 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:54:20,974 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:54:20,975 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:54:20,976 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:54:20,976 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:54:20,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:54:20,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:54:20,977 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:54:20,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:54:20,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:54:20,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:54:20,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:54:20,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:54:20,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:54:20,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:54:20,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:54:20,979 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:54:20,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:54:20,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:54:20,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:54:20,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:54:20,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:54:20,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:54:20,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:54:20,985 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:54:20,985 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_447c8691-6449-4a6f-9801-ab432fa908fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bcd24ea8f621c8db79e853f5aaf064ffcae573e6c1e9f03eb1f84bb0c15fc3c [2021-10-28 09:54:21,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:54:21,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:54:21,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:54:21,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:54:21,418 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:54:21,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2021-10-28 09:54:21,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/data/0c2e01410/03152a8f11d944b28808d2a6e76cb405/FLAG8f8d2fe5c [2021-10-28 09:54:22,098 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:54:22,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2021-10-28 09:54:22,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/data/0c2e01410/03152a8f11d944b28808d2a6e76cb405/FLAG8f8d2fe5c [2021-10-28 09:54:22,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/data/0c2e01410/03152a8f11d944b28808d2a6e76cb405 [2021-10-28 09:54:22,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:54:22,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:54:22,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:54:22,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:54:22,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:54:22,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:54:22" (1/1) ... [2021-10-28 09:54:22,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b385cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:22, skipping insertion in model container [2021-10-28 09:54:22,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:54:22" (1/1) ... [2021-10-28 09:54:22,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:54:22,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:54:22,771 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_447c8691-6449-4a6f-9801-ab432fa908fd/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2021-10-28 09:54:22,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:54:22,911 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:54:22,989 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_447c8691-6449-4a6f-9801-ab432fa908fd/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2021-10-28 09:54:23,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:54:23,080 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:54:23,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23 WrapperNode [2021-10-28 09:54:23,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:54:23,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:54:23,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:54:23,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:54:23,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:54:23,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:54:23,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:54:23,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:54:23,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:54:23,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:54:23,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:54:23,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:54:23,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (1/1) ... [2021-10-28 09:54:23,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:54:23,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:54:23,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:54:23,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:54:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:54:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:54:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:54:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:54:24,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:54:24,760 INFO L299 CfgBuilder]: Removed 296 assume(true) statements. [2021-10-28 09:54:24,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:54:24 BoogieIcfgContainer [2021-10-28 09:54:24,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:54:24,767 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:54:24,767 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:54:24,774 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:54:24,775 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:54:24,776 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:54:22" (1/3) ... [2021-10-28 09:54:24,778 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1564f4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:54:24, skipping insertion in model container [2021-10-28 09:54:24,778 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:54:24,779 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:23" (2/3) ... [2021-10-28 09:54:24,779 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1564f4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:54:24, skipping insertion in model container [2021-10-28 09:54:24,779 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:54:24,779 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:54:24" (3/3) ... [2021-10-28 09:54:24,781 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2021-10-28 09:54:24,854 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:54:24,854 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:54:24,854 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:54:24,854 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:54:24,854 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:54:24,855 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:54:24,855 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:54:24,855 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:54:24,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 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 09:54:24,921 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2021-10-28 09:54:24,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:24,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:24,932 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:24,933 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:24,933 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:54:24,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 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 09:54:24,949 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2021-10-28 09:54:24,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:24,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:24,951 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:24,951 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:24,957 INFO L791 eck$LassoCheckResult]: Stem: 179#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 114#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 53#L514true 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; 165#L522true main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 130#L1034true assume 0 != main_~tmp~10; 10#L1010true ~switchedOnBeforeTS~0 := 0; 89#L542true havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 94#L563-1true [2021-10-28 09:54:24,959 INFO L793 eck$LassoCheckResult]: Loop: 94#L563-1true assume !false; 189#L431true assume test_~splverifierCounter~0 < 4; 153#L432true test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 162#L440true assume !(0 != test_~tmp~5); 104#L440-1true test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 63#L450true assume !(0 != test_~tmp___0~2); 119#L450-1true test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 37#L460true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 192#L468-1true havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 87#L317true __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 116#L552true assume !(0 != ~pumpRunning~0); 3#L180true assume !(0 != ~systemActive~0); 77#L187true havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 171#L133true __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 135#L563true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 94#L563-1true [2021-10-28 09:54:24,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:24,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 09:54:24,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:24,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321763952] [2021-10-28 09:54:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:24,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:25,390 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:25,636 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:25,649 INFO L85 PathProgramCache]: Analyzing trace with hash 680336182, now seen corresponding path program 1 times [2021-10-28 09:54:25,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:25,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361385441] [2021-10-28 09:54:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:25,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:25,769 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 09:54:25,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:25,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361385441] [2021-10-28 09:54:25,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361385441] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:25,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:25,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:54:25,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461854869] [2021-10-28 09:54:25,790 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:54:25,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:25,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:54:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:54:25,814 INFO L87 Difference]: Start difference. First operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:25,915 INFO L93 Difference]: Finished difference Result 387 states and 575 transitions. [2021-10-28 09:54:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:54:25,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 575 transitions. [2021-10-28 09:54:25,953 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 254 [2021-10-28 09:54:25,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 373 states and 560 transitions. [2021-10-28 09:54:25,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 373 [2021-10-28 09:54:25,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 373 [2021-10-28 09:54:25,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 373 states and 560 transitions. [2021-10-28 09:54:25,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:25,977 INFO L681 BuchiCegarLoop]: Abstraction has 373 states and 560 transitions. [2021-10-28 09:54:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states and 560 transitions. [2021-10-28 09:54:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2021-10-28 09:54:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 371 states have (on average 1.5013477088948788) internal successors, (557), 370 states have internal predecessors, (557), 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 09:54:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 557 transitions. [2021-10-28 09:54:26,052 INFO L704 BuchiCegarLoop]: Abstraction has 371 states and 557 transitions. [2021-10-28 09:54:26,052 INFO L587 BuchiCegarLoop]: Abstraction has 371 states and 557 transitions. [2021-10-28 09:54:26,053 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:54:26,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 371 states and 557 transitions. [2021-10-28 09:54:26,058 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 252 [2021-10-28 09:54:26,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:26,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:26,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:26,060 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:26,061 INFO L791 eck$LassoCheckResult]: Stem: 789#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 677#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 678#L514 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; 754#L522 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 718#L1034 assume 0 != main_~tmp~10; 626#L1010 ~switchedOnBeforeTS~0 := 0; 603#L542 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 604#L563-1 [2021-10-28 09:54:26,061 INFO L793 eck$LassoCheckResult]: Loop: 604#L563-1 assume !false; 618#L431 assume test_~splverifierCounter~0 < 4; 813#L432 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 812#L440 assume !(0 != test_~tmp~5); 810#L440-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 809#L450 assume !(0 != test_~tmp___0~2); 807#L450-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 806#L460 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 722#L468-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 597#L317 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 598#L552 assume !(0 != ~pumpRunning~0); 593#L180 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 594#L264 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 833#L238-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 821#L212-3 assume !(0 == ~pumpRunning~0); 793#L187 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 782#L133 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 733#L563 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 604#L563-1 [2021-10-28 09:54:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 09:54:26,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:26,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476971692] [2021-10-28 09:54:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:26,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:26,128 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:26,232 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1848123806, now seen corresponding path program 1 times [2021-10-28 09:54:26,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:26,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146260684] [2021-10-28 09:54:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:26,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:26,267 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 09:54:26,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:26,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146260684] [2021-10-28 09:54:26,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146260684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:26,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:26,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:54:26,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722514386] [2021-10-28 09:54:26,270 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:54:26,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:26,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:54:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:54:26,271 INFO L87 Difference]: Start difference. First operand 371 states and 557 transitions. cyclomatic complexity: 189 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 09:54:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:26,471 INFO L93 Difference]: Finished difference Result 398 states and 559 transitions. [2021-10-28 09:54:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:54:26,473 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 559 transitions. [2021-10-28 09:54:26,478 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 279 [2021-10-28 09:54:26,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 559 transitions. [2021-10-28 09:54:26,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2021-10-28 09:54:26,485 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2021-10-28 09:54:26,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 559 transitions. [2021-10-28 09:54:26,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:26,498 INFO L681 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-10-28 09:54:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 559 transitions. [2021-10-28 09:54:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-10-28 09:54:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 398 states have (on average 1.4045226130653266) internal successors, (559), 397 states have internal predecessors, (559), 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 09:54:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 559 transitions. [2021-10-28 09:54:26,573 INFO L704 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-10-28 09:54:26,573 INFO L587 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-10-28 09:54:26,573 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:54:26,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 398 states and 559 transitions. [2021-10-28 09:54:26,577 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 279 [2021-10-28 09:54:26,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:26,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:26,594 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:26,594 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:26,595 INFO L791 eck$LassoCheckResult]: Stem: 1546#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1446#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1447#L514 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; 1511#L522 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 1475#L1034 assume 0 != main_~tmp~10; 1402#L1010 ~switchedOnBeforeTS~0 := 0; 1378#L542 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1379#L563-1 [2021-10-28 09:54:26,595 INFO L793 eck$LassoCheckResult]: Loop: 1379#L563-1 assume !false; 1572#L431 assume test_~splverifierCounter~0 < 4; 1571#L432 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 1570#L440 assume !(0 != test_~tmp~5); 1568#L440-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 1567#L450 assume !(0 != test_~tmp___0~2); 1566#L450-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 1636#L460 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1560#L468-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1585#L317 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 1582#L552 assume !(0 != ~pumpRunning~0); 1563#L180 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1482#L264 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 1380#L238-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1381#L212-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1513#L141-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1506#L146-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 1426#L366-9 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 1427#L366-11 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1435#L372-3 processEnvironment__wrappee__highWaterSensor_#t~ret17 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret17;havoc processEnvironment__wrappee__highWaterSensor_#t~ret17; 1403#L216-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1405#L187 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1580#L133 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 1576#L563 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 1379#L563-1 [2021-10-28 09:54:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 09:54:26,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:26,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963071881] [2021-10-28 09:54:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:26,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:26,660 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:26,739 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1709468010, now seen corresponding path program 1 times [2021-10-28 09:54:26,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:26,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148734630] [2021-10-28 09:54:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:26,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:26,795 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 09:54:26,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:54:26,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148734630] [2021-10-28 09:54:26,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148734630] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:26,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:26,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:54:26,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610719076] [2021-10-28 09:54:26,798 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:54:26,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:54:26,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:54:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:54:26,800 INFO L87 Difference]: Start difference. First operand 398 states and 559 transitions. cyclomatic complexity: 164 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:54:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:27,208 INFO L93 Difference]: Finished difference Result 1823 states and 2579 transitions. [2021-10-28 09:54:27,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:54:27,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1823 states and 2579 transitions. [2021-10-28 09:54:27,238 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 1262 [2021-10-28 09:54:27,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1823 states to 1823 states and 2579 transitions. [2021-10-28 09:54:27,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1823 [2021-10-28 09:54:27,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1823 [2021-10-28 09:54:27,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1823 states and 2579 transitions. [2021-10-28 09:54:27,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:54:27,282 INFO L681 BuchiCegarLoop]: Abstraction has 1823 states and 2579 transitions. [2021-10-28 09:54:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states and 2579 transitions. [2021-10-28 09:54:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 783. [2021-10-28 09:54:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 783 states have (on average 1.3882503192848021) internal successors, (1087), 782 states have internal predecessors, (1087), 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 09:54:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1087 transitions. [2021-10-28 09:54:27,349 INFO L704 BuchiCegarLoop]: Abstraction has 783 states and 1087 transitions. [2021-10-28 09:54:27,349 INFO L587 BuchiCegarLoop]: Abstraction has 783 states and 1087 transitions. [2021-10-28 09:54:27,349 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:54:27,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 783 states and 1087 transitions. [2021-10-28 09:54:27,357 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 554 [2021-10-28 09:54:27,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:54:27,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:54:27,362 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:27,362 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:54:27,362 INFO L791 eck$LassoCheckResult]: Stem: 3807#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 3692#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 3693#L514 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; 3767#L522 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 3727#L1034 assume 0 != main_~tmp~10; 3640#L1010 ~switchedOnBeforeTS~0 := 0; 3618#L542 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3619#L563-1 [2021-10-28 09:54:27,370 INFO L793 eck$LassoCheckResult]: Loop: 3619#L563-1 assume !false; 4088#L431 assume test_~splverifierCounter~0 < 4; 4087#L432 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 4086#L440 assume !(0 != test_~tmp~5); 4083#L440-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 4082#L450 assume !(0 != test_~tmp___0~2); 4080#L450-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 4079#L460 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3817#L468-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 3612#L317 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 3613#L552 assume !(0 != ~pumpRunning~0); 3696#L180 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 4017#L264 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 4016#L238-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 4014#L212-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 4012#L141-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 3979#L146-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 4008#L366-9 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 4005#L366-11 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 4002#L372-3 processEnvironment__wrappee__highWaterSensor_#t~ret17 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret17;havoc processEnvironment__wrappee__highWaterSensor_#t~ret17; 3927#L216-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 3658#L187 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 4094#L133 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 4093#L563 assume 2 != __utac_acc__Specification5_spec__3_~tmp~6;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 4092#L317-1 __utac_acc__Specification5_spec__3_#t~ret46 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret46;havoc __utac_acc__Specification5_spec__3_#t~ret46; 4090#L567 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 3619#L563-1 [2021-10-28 09:54:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:27,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 09:54:27,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:27,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716276666] [2021-10-28 09:54:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:27,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:27,493 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:27,549 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:27,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:27,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2121242117, now seen corresponding path program 1 times [2021-10-28 09:54:27,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:27,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072902659] [2021-10-28 09:54:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:27,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:27,559 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:27,573 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:54:27,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash 155030475, now seen corresponding path program 1 times [2021-10-28 09:54:27,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:54:27,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589352823] [2021-10-28 09:54:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:27,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:54:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:27,618 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:54:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:54:27,682 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:35,970 WARN L207 SmtUtils]: Spent 1.13 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 09:56:47,180 WARN L207 SmtUtils]: Spent 37.19 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 09:56:47,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:56:47 BoogieIcfgContainer [2021-10-28 09:56:47,361 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:56:47,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:56:47,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:56:47,362 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:56:47,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:54:24" (3/4) ... [2021-10-28 09:56:47,366 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:56:47,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:56:47,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:56:47,439 INFO L168 Benchmark]: Toolchain (without parser) took 145028.33 ms. Allocated memory was 104.9 MB in the beginning and 172.0 MB in the end (delta: 67.1 MB). Free memory was 67.1 MB in the beginning and 72.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:47,440 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory was 74.7 MB in the beginning and 74.7 MB in the end (delta: 32.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:56:47,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.41 ms. Allocated memory is still 104.9 MB. Free memory was 66.9 MB in the beginning and 65.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:47,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.52 ms. Allocated memory is still 104.9 MB. Free memory was 65.4 MB in the beginning and 60.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:47,442 INFO L168 Benchmark]: Boogie Preprocessor took 72.30 ms. Allocated memory is still 104.9 MB. Free memory was 60.5 MB in the beginning and 57.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:47,443 INFO L168 Benchmark]: RCFGBuilder took 1497.22 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 57.0 MB in the beginning and 62.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:47,444 INFO L168 Benchmark]: BuchiAutomizer took 142593.82 ms. Allocated memory was 127.9 MB in the beginning and 172.0 MB in the end (delta: 44.0 MB). Free memory was 61.9 MB in the beginning and 74.1 MB in the end (delta: -12.2 MB). Peak memory consumption was 68.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:47,444 INFO L168 Benchmark]: Witness Printer took 76.36 ms. Allocated memory is still 172.0 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:47,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory was 74.7 MB in the beginning and 74.7 MB in the end (delta: 32.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 666.41 ms. Allocated memory is still 104.9 MB. Free memory was 66.9 MB in the beginning and 65.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.52 ms. Allocated memory is still 104.9 MB. Free memory was 65.4 MB in the beginning and 60.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.30 ms. Allocated memory is still 104.9 MB. Free memory was 60.5 MB in the beginning and 57.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1497.22 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 57.0 MB in the beginning and 62.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 142593.82 ms. Allocated memory was 127.9 MB in the beginning and 172.0 MB in the end (delta: 44.0 MB). Free memory was 61.9 MB in the beginning and 74.1 MB in the end (delta: -12.2 MB). Peak memory consumption was 68.3 MB. Max. memory is 16.1 GB. * Witness Printer took 76.36 ms. Allocated memory is still 172.0 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 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 783 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 142.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 141.2s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 1042 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 783 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 950 SDtfs, 1462 SDslu, 1515 SDs, 0 SdLazy, 242 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 430]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4380} State at position 1 is {NULL=0, NULL=4392, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2700ef8a=0, NULL=4380, NULL=4404, methaneLevelCritical=0, tmp=0, NULL=0, NULL=4390, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=4406, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@787dff9e=0, NULL=4399, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@143d3b11=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6049faa0=81, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f98ce75=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39a20d8e=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=4389, NULL=0, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=4387, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=4396, NULL=4391, NULL=4401, tmp=0, head=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e7a5d13=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c9aa618=0, NULL=4397, NULL=4385, NULL=4383, tmp=0, tmp=1, tmp___0=0, NULL=0, NULL=0, NULL=4384, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50b75591=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=4393, NULL=4395, switchedOnBeforeTS=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c52057e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76c2e704=0, NULL=0, systemActive=1, NULL=4400, \result=1, NULL=0, NULL=0, NULL=4405, \result=0, NULL=0, NULL=4381, retValue_acc=0, \result=0, tmp___0=0, NULL=4398, NULL=0, NULL=4394, retValue_acc=1, NULL=4408, NULL=4407, NULL=4382, tmp___2=81, splverifierCounter=0, NULL=0, NULL=4386, NULL=4388, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48d7e7e6=0, NULL=0, NULL=4402, NULL=0, NULL=4403, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L168] int pumpRunning = 0; [L169] int systemActive = 1; [L536] int switchedOnBeforeTS ; [L754] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L951] int cleanupTimeShifts = 4; [L1025] int retValue_acc ; [L1026] int tmp ; [L518] int retValue_acc ; [L521] retValue_acc = 1 [L522] return (retValue_acc); [L1032] tmp = valid_product() [L1034] COND TRUE \read(tmp) [L541] switchedOnBeforeTS = 0 [L421] int splverifierCounter ; [L422] int tmp ; [L423] int tmp___0 ; [L424] int tmp___1 ; [L425] int tmp___2 ; [L428] splverifierCounter = 0 Loop: [L430] COND TRUE 1 [L432] COND TRUE splverifierCounter < 4 [L438] tmp = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp)) [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___0)) [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) [L414] systemActive = 1 [L313] int retValue_acc ; [L316] retValue_acc = pumpRunning [L317] return (retValue_acc); [L550] switchedOnBeforeTS = isPumpRunning() [L180] COND FALSE !(\read(pumpRunning)) [L187] COND TRUE \read(systemActive) [L261] int tmp ; [L264] COND FALSE !(\read(pumpRunning)) [L235] int tmp ; [L238] COND FALSE !(\read(pumpRunning)) [L209] int tmp ; [L212] COND TRUE ! pumpRunning [L358] int retValue_acc ; [L359] int tmp ; [L360] int tmp___0 ; [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L364] tmp = isHighWaterSensorDry() [L366] COND TRUE \read(tmp) [L367] tmp___0 = 0 [L371] retValue_acc = tmp___0 [L372] return (retValue_acc); [L214] tmp = isHighWaterLevel() [L216] COND FALSE !(\read(tmp)) [L556] int tmp ; [L557] int tmp___0 ; [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L561] tmp = getWaterLevel() [L563] COND TRUE tmp != 2 [L313] int retValue_acc ; [L316] retValue_acc = pumpRunning [L317] return (retValue_acc); [L565] tmp___0 = isPumpRunning() [L567] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:56:47,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447c8691-6449-4a6f-9801-ab432fa908fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...