./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product60.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product60.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2efd89abea8f395c763606eb884193ead53dd4c60c121d08f464917c0ce7119b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:22:26,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:22:26,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:22:26,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:22:26,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:22:26,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:22:26,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:22:26,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:22:26,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:22:26,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:22:26,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:22:26,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:22:26,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:22:26,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:22:26,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:22:26,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:22:27,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:22:27,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:22:27,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:22:27,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:22:27,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:22:27,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:22:27,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:22:27,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:22:27,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:22:27,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:22:27,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:22:27,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:22:27,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:22:27,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:22:27,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:22:27,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:22:27,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:22:27,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:22:27,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:22:27,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:22:27,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:22:27,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:22:27,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:22:27,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:22:27,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:22:27,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:22:27,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:22:27,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:22:27,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:22:27,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:22:27,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:22:27,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:22:27,142 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:22:27,142 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:22:27,142 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:22:27,142 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:22:27,143 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:22:27,143 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:22:27,144 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:22:27,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:22:27,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:22:27,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:22:27,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:22:27,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:22:27,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:22:27,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:22:27,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:22:27,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:22:27,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:22:27,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:22:27,147 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:22:27,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:22:27,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:22:27,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:22:27,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:22:27,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:22:27,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:22:27,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:22:27,153 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:22:27,153 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_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2efd89abea8f395c763606eb884193ead53dd4c60c121d08f464917c0ce7119b [2021-10-21 20:22:27,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:22:27,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:22:27,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:22:27,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:22:27,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:22:27,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product60.cil.c [2021-10-21 20:22:27,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/data/2a02c2e03/ecb2bd53d316482bb1dab7b7d59da3ee/FLAGcb33d8f07 [2021-10-21 20:22:28,254 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:22:28,255 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/sv-benchmarks/c/product-lines/minepump_spec3_product60.cil.c [2021-10-21 20:22:28,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/data/2a02c2e03/ecb2bd53d316482bb1dab7b7d59da3ee/FLAGcb33d8f07 [2021-10-21 20:22:28,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/data/2a02c2e03/ecb2bd53d316482bb1dab7b7d59da3ee [2021-10-21 20:22:28,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:22:28,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:22:28,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:22:28,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:22:28,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:22:28,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:22:28" (1/1) ... [2021-10-21 20:22:28,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430871d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:28, skipping insertion in model container [2021-10-21 20:22:28,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:22:28" (1/1) ... [2021-10-21 20:22:28,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:22:28,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:22:28,936 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_e32a6688-ee71-48e0-91b1-3756b50b6113/sv-benchmarks/c/product-lines/minepump_spec3_product60.cil.c[16122,16135] [2021-10-21 20:22:28,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:22:28,981 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:22:29,104 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_e32a6688-ee71-48e0-91b1-3756b50b6113/sv-benchmarks/c/product-lines/minepump_spec3_product60.cil.c[16122,16135] [2021-10-21 20:22:29,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:22:29,168 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:22:29,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29 WrapperNode [2021-10-21 20:22:29,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:22:29,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:22:29,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:22:29,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:22:29,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:22:29,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:22:29,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:22:29,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:22:29,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:22:29,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:22:29,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:22:29,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:22:29,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (1/1) ... [2021-10-21 20:22:29,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:22:29,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:22:29,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:22:29,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:22:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:22:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:22:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:22:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:22:30,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:22:30,491 INFO L299 CfgBuilder]: Removed 204 assume(true) statements. [2021-10-21 20:22:30,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:22:30 BoogieIcfgContainer [2021-10-21 20:22:30,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:22:30,495 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:22:30,495 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:22:30,499 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:22:30,499 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:22:30,500 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:22:28" (1/3) ... [2021-10-21 20:22:30,501 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ace7b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:22:30, skipping insertion in model container [2021-10-21 20:22:30,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:22:30,501 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:22:29" (2/3) ... [2021-10-21 20:22:30,502 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ace7b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:22:30, skipping insertion in model container [2021-10-21 20:22:30,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:22:30,502 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:22:30" (3/3) ... [2021-10-21 20:22:30,503 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2021-10-21 20:22:30,548 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:22:30,548 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:22:30,548 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:22:30,548 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:22:30,549 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:22:30,549 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:22:30,549 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:22:30,549 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:22:30,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 140 states, 139 states have (on average 1.5107913669064748) internal successors, (210), 139 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:30,597 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2021-10-21 20:22:30,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:22:30,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:22:30,605 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:22:30,606 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:30,606 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:22:30,607 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 140 states, 139 states have (on average 1.5107913669064748) internal successors, (210), 139 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:30,615 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2021-10-21 20:22:30,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:22:30,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:22:30,617 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:22:30,617 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:30,622 INFO L791 eck$LassoCheckResult]: Stem: 126#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);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(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 45#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; 133#L809true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 62#L817true main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 77#L1007true assume 0 != main_~tmp~10; 39#L984true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 104#L390-1true [2021-10-21 20:22:30,623 INFO L793 eck$LassoCheckResult]: Loop: 104#L390-1true assume !false; 124#L67true assume test_~splverifierCounter~0 < 4; 135#L68true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 66#L76true assume !(0 != test_~tmp~0); 122#L76-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 4#L86true assume !(0 != test_~tmp___0~0); 72#L86-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 119#L96true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 140#L104-1true assume !(0 != ~pumpRunning~0); 105#L142true assume !(0 != ~systemActive~0); 92#L149true havoc __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_#t~ret34, __utac_acc__Specification3_spec__1_#t~ret35, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 37#L865-2true __utac_acc__Specification3_spec__1_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret33;havoc __utac_acc__Specification3_spec__1_#t~ret33; 141#L384true assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 104#L390-1true [2021-10-21 20:22:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:30,629 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 20:22:30,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:30,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758067627] [2021-10-21 20:22:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:30,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:30,908 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:22:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:31,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:22:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:31,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1669554881, now seen corresponding path program 1 times [2021-10-21 20:22:31,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:31,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125575922] [2021-10-21 20:22:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:31,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:31,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:22:31,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125575922] [2021-10-21 20:22:31,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125575922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:31,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:31,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:22:31,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012517259] [2021-10-21 20:22:31,239 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:22:31,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:22:31,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:22:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:22:31,264 INFO L87 Difference]: Start difference. First operand has 140 states, 139 states have (on average 1.5107913669064748) internal successors, (210), 139 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:31,395 INFO L93 Difference]: Finished difference Result 274 states and 396 transitions. [2021-10-21 20:22:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:22:31,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 274 states and 396 transitions. [2021-10-21 20:22:31,417 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 178 [2021-10-21 20:22:31,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 274 states to 260 states and 381 transitions. [2021-10-21 20:22:31,430 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 260 [2021-10-21 20:22:31,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 260 [2021-10-21 20:22:31,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 260 states and 381 transitions. [2021-10-21 20:22:31,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:22:31,435 INFO L681 BuchiCegarLoop]: Abstraction has 260 states and 381 transitions. [2021-10-21 20:22:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states and 381 transitions. [2021-10-21 20:22:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2021-10-21 20:22:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 258 states have (on average 1.4651162790697674) internal successors, (378), 257 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 378 transitions. [2021-10-21 20:22:31,491 INFO L704 BuchiCegarLoop]: Abstraction has 258 states and 378 transitions. [2021-10-21 20:22:31,491 INFO L587 BuchiCegarLoop]: Abstraction has 258 states and 378 transitions. [2021-10-21 20:22:31,491 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:22:31,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 258 states and 378 transitions. [2021-10-21 20:22:31,495 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 176 [2021-10-21 20:22:31,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:22:31,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:22:31,497 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:22:31,497 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:31,497 INFO L791 eck$LassoCheckResult]: Stem: 571#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);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(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 493#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; 494#L809 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 516#L817 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 517#L1007 assume 0 != main_~tmp~10; 485#L984 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 452#L390-1 [2021-10-21 20:22:31,498 INFO L793 eck$LassoCheckResult]: Loop: 452#L390-1 assume !false; 552#L67 assume test_~splverifierCounter~0 < 4; 569#L68 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 521#L76 assume !(0 != test_~tmp~0); 523#L76-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 423#L86 assume !(0 != test_~tmp___0~0); 424#L86-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 667#L96 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 566#L104-1 assume !(0 != ~pumpRunning~0); 553#L142 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 554#L200 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 652#L174-1 assume !(0 == ~pumpRunning~0); 648#L149 havoc __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_#t~ret34, __utac_acc__Specification3_spec__1_#t~ret35, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 481#L865-2 __utac_acc__Specification3_spec__1_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret33;havoc __utac_acc__Specification3_spec__1_#t~ret33; 482#L384 assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 452#L390-1 [2021-10-21 20:22:31,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:31,499 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 20:22:31,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:31,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036867472] [2021-10-21 20:22:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:31,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:31,586 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:22:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:31,772 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:22:31,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:31,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1405144280, now seen corresponding path program 1 times [2021-10-21 20:22:31,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:31,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869918172] [2021-10-21 20:22:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:31,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:31,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:22:31,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869918172] [2021-10-21 20:22:31,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869918172] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:31,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:31,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:22:31,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094416181] [2021-10-21 20:22:31,796 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:22:31,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:22:31,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:22:31,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:22:31,797 INFO L87 Difference]: Start difference. First operand 258 states and 378 transitions. cyclomatic complexity: 123 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:31,897 INFO L93 Difference]: Finished difference Result 353 states and 496 transitions. [2021-10-21 20:22:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:22:31,898 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 353 states and 496 transitions. [2021-10-21 20:22:31,909 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 247 [2021-10-21 20:22:31,915 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 353 states to 353 states and 496 transitions. [2021-10-21 20:22:31,920 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 353 [2021-10-21 20:22:31,921 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 353 [2021-10-21 20:22:31,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 353 states and 496 transitions. [2021-10-21 20:22:31,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:22:31,930 INFO L681 BuchiCegarLoop]: Abstraction has 353 states and 496 transitions. [2021-10-21 20:22:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states and 496 transitions. [2021-10-21 20:22:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-10-21 20:22:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 353 states have (on average 1.405099150141643) internal successors, (496), 352 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 496 transitions. [2021-10-21 20:22:31,976 INFO L704 BuchiCegarLoop]: Abstraction has 353 states and 496 transitions. [2021-10-21 20:22:31,976 INFO L587 BuchiCegarLoop]: Abstraction has 353 states and 496 transitions. [2021-10-21 20:22:31,976 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:22:31,976 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 353 states and 496 transitions. [2021-10-21 20:22:31,980 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 247 [2021-10-21 20:22:31,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:22:31,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:22:31,982 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:22:31,983 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:31,983 INFO L791 eck$LassoCheckResult]: Stem: 1208#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);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(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 1116#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; 1117#L809 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1141#L817 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 1142#L1007 assume 0 != main_~tmp~10; 1107#L984 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1108#L390-1 [2021-10-21 20:22:31,983 INFO L793 eck$LassoCheckResult]: Loop: 1108#L390-1 assume !false; 1183#L67 assume test_~splverifierCounter~0 < 4; 1286#L68 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1285#L76 assume !(0 != test_~tmp~0); 1201#L76-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1202#L86 assume !(0 != test_~tmp___0~0); 1282#L86-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 1196#L96 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1197#L104-1 assume !(0 != ~pumpRunning~0); 1184#L142 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1185#L200 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1277#L174-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1392#L905-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1279#L910-1 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 1275#L320-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1273#L320-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1094#L326-1 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 1095#L178-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1105#L149 havoc __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_#t~ret34, __utac_acc__Specification3_spec__1_#t~ret35, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 1289#L865-2 __utac_acc__Specification3_spec__1_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret33;havoc __utac_acc__Specification3_spec__1_#t~ret33; 1288#L384 assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 1108#L390-1 [2021-10-21 20:22:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:31,984 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 20:22:31,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:31,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473415237] [2021-10-21 20:22:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:31,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:32,037 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:22:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:32,112 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:22:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:32,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1224409652, now seen corresponding path program 1 times [2021-10-21 20:22:32,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:32,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764567199] [2021-10-21 20:22:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:32,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:32,120 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:22:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:32,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:22:32,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:32,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1680480846, now seen corresponding path program 1 times [2021-10-21 20:22:32,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:32,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601872479] [2021-10-21 20:22:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:32,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:32,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:22:32,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601872479] [2021-10-21 20:22:32,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601872479] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:32,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:32,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:22:32,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633089664] [2021-10-21 20:22:32,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:22:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:22:32,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:22:32,628 INFO L87 Difference]: Start difference. First operand 353 states and 496 transitions. cyclomatic complexity: 146 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:32,887 INFO L93 Difference]: Finished difference Result 1229 states and 1735 transitions. [2021-10-21 20:22:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:22:32,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1229 states and 1735 transitions. [2021-10-21 20:22:32,902 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 922 [2021-10-21 20:22:32,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1229 states to 1229 states and 1735 transitions. [2021-10-21 20:22:32,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1229 [2021-10-21 20:22:32,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1229 [2021-10-21 20:22:32,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1229 states and 1735 transitions. [2021-10-21 20:22:32,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:22:32,945 INFO L681 BuchiCegarLoop]: Abstraction has 1229 states and 1735 transitions. [2021-10-21 20:22:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states and 1735 transitions. [2021-10-21 20:22:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 700. [2021-10-21 20:22:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 700 states have (on average 1.3857142857142857) internal successors, (970), 699 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:32,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 970 transitions. [2021-10-21 20:22:32,984 INFO L704 BuchiCegarLoop]: Abstraction has 700 states and 970 transitions. [2021-10-21 20:22:32,984 INFO L587 BuchiCegarLoop]: Abstraction has 700 states and 970 transitions. [2021-10-21 20:22:32,985 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:22:32,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 700 states and 970 transitions. [2021-10-21 20:22:32,989 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 494 [2021-10-21 20:22:32,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:22:32,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:22:32,992 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:22:32,992 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:32,993 INFO L791 eck$LassoCheckResult]: Stem: 2809#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);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(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 2713#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; 2714#L809 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 2741#L817 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 2742#L1007 assume 0 != main_~tmp~10; 2706#L984 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2671#L390-1 [2021-10-21 20:22:32,993 INFO L793 eck$LassoCheckResult]: Loop: 2671#L390-1 assume !false; 2793#L67 assume test_~splverifierCounter~0 < 4; 2808#L68 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 2746#L76 assume !(0 != test_~tmp~0); 2748#L76-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 2642#L86 assume !(0 != test_~tmp___0~0); 2643#L86-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 2805#L96 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2680#L104-1 assume !(0 != ~pumpRunning~0); 2820#L142 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 2799#L200 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 2779#L174-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 2745#L905-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 2668#L910-1 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 2669#L320-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 2661#L320-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2662#L326-1 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 2695#L178-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 2704#L149 havoc __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_#t~ret34, __utac_acc__Specification3_spec__1_#t~ret35, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 2702#L865-2 __utac_acc__Specification3_spec__1_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret33;havoc __utac_acc__Specification3_spec__1_#t~ret33; 2703#L384 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~6);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 2656#L897 __utac_acc__Specification3_spec__1_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret34;havoc __utac_acc__Specification3_spec__1_#t~ret34; 2657#L390 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 2671#L390-1 [2021-10-21 20:22:32,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:32,994 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 20:22:32,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:32,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805251535] [2021-10-21 20:22:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:32,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:33,055 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:22:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:33,092 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:22:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:33,093 INFO L82 PathProgramCache]: Analyzing trace with hash -163354618, now seen corresponding path program 1 times [2021-10-21 20:22:33,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:33,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792333495] [2021-10-21 20:22:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:33,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:33,100 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:22:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:33,114 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:22:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:33,115 INFO L82 PathProgramCache]: Analyzing trace with hash 34398624, now seen corresponding path program 1 times [2021-10-21 20:22:33,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:22:33,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600829742] [2021-10-21 20:22:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:33,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:22:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:33,148 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:22:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:22:33,209 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:33,579 WARN L207 SmtUtils]: Spent 59.99 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 20:24:30,634 WARN L207 SmtUtils]: Spent 27.81 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 20:24:30,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:24:30 BoogieIcfgContainer [2021-10-21 20:24:30,815 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:24:30,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:24:30,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:24:30,818 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:24:30,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:22:30" (3/4) ... [2021-10-21 20:24:30,829 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:24:30,899 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:24:30,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:24:30,900 INFO L168 Benchmark]: Toolchain (without parser) took 122366.87 ms. Allocated memory was 109.1 MB in the beginning and 174.1 MB in the end (delta: 65.0 MB). Free memory was 70.4 MB in the beginning and 108.3 MB in the end (delta: -37.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:30,901 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 109.1 MB. Free memory was 88.0 MB in the beginning and 87.9 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:24:30,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.62 ms. Allocated memory is still 109.1 MB. Free memory was 70.2 MB in the beginning and 76.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:30,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.44 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 72.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:30,903 INFO L168 Benchmark]: Boogie Preprocessor took 62.66 ms. Allocated memory is still 109.1 MB. Free memory was 72.0 MB in the beginning and 68.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:30,904 INFO L168 Benchmark]: RCFGBuilder took 1139.32 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 68.9 MB in the beginning and 100.8 MB in the end (delta: -32.0 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:30,905 INFO L168 Benchmark]: BuchiAutomizer took 120321.63 ms. Allocated memory was 142.6 MB in the beginning and 174.1 MB in the end (delta: 31.5 MB). Free memory was 100.8 MB in the beginning and 110.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 96.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:24:30,905 INFO L168 Benchmark]: Witness Printer took 82.48 ms. Allocated memory is still 174.1 MB. Free memory was 110.4 MB in the beginning and 108.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:24:30,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 109.1 MB. Free memory was 88.0 MB in the beginning and 87.9 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 631.62 ms. Allocated memory is still 109.1 MB. Free memory was 70.2 MB in the beginning and 76.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.44 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 72.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.66 ms. Allocated memory is still 109.1 MB. Free memory was 72.0 MB in the beginning and 68.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1139.32 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 68.9 MB in the beginning and 100.8 MB in the end (delta: -32.0 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 120321.63 ms. Allocated memory was 142.6 MB in the beginning and 174.1 MB in the end (delta: 31.5 MB). Free memory was 100.8 MB in the beginning and 110.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 96.1 MB. Max. memory is 16.1 GB. * Witness Printer took 82.48 ms. Allocated memory is still 174.1 MB. Free memory was 110.4 MB in the beginning and 108.3 MB in the end (delta: 2.1 MB). There was no memory consumed. 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 700 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 120.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 119.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 125.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 531 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 700 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 666 SDtfs, 1120 SDslu, 1161 SDs, 0 SdLazy, 147 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 224.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 66]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31656} State at position 1 is {NULL=0, NULL=0, NULL=31682, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38a5e179=72, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ec08c2b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4791db10=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ac96a34=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@775c7399=0, NULL=31656, NULL=31678, NULL=0, NULL=31681, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b420983=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a0e8025=0, NULL=0, retValue_acc=0, NULL=31674, NULL=0, tmp___1=0, NULL=0, NULL=31669, cleanupTimeShifts=4, tmp=0, tmp=1, tmp=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e248722=0, NULL=31668, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=31666, \result=1, NULL=0, tmp=1, NULL=0, NULL=31672, NULL=0, NULL=0, NULL=31673, NULL=31662, NULL=31671, NULL=31667, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c56aa79=0, head=0, NULL=0, NULL=0, NULL=31664, NULL=31683, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c0a49ca=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@210c73df=0, NULL=31665, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=31659, tmp=0, tmp___0=1, NULL=0, systemActive=1, \result=1, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=31657, retValue_acc=0, NULL=31684, \result=0, NULL=31677, NULL=0, NULL=0, NULL=31676, NULL=31663, retValue_acc=1, NULL=31670, NULL=31658, tmp___2=72, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=31660, NULL=31680, tmp___1=0, NULL=0, NULL=0, NULL=31661, NULL=0, NULL=31675, NULL=31679} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L134] int pumpRunning = 0; [L135] int systemActive = 1; [L578] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L822] int waterLevel = 1; [L823] int methaneLevelCritical = 0; [L925] int cleanupTimeShifts = 4; [L998] int retValue_acc ; [L999] int tmp ; [L813] int retValue_acc ; [L816] retValue_acc = 1 [L817] return (retValue_acc); [L1005] tmp = valid_product() [L1007] COND TRUE \read(tmp) [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 Loop: [L66] COND TRUE 1 [L68] COND TRUE splverifierCounter < 4 [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L368] systemActive = 1 [L142] COND FALSE !(\read(pumpRunning)) [L149] COND TRUE \read(systemActive) [L197] int tmp ; [L200] COND FALSE !(\read(pumpRunning)) [L171] int tmp ; [L174] COND TRUE ! pumpRunning [L312] int retValue_acc ; [L313] int tmp ; [L314] int tmp___0 ; [L902] int retValue_acc ; [L905] COND TRUE waterLevel < 2 [L906] retValue_acc = 1 [L907] return (retValue_acc); [L318] tmp = isHighWaterSensorDry() [L320] COND TRUE \read(tmp) [L321] tmp___0 = 0 [L325] retValue_acc = tmp___0 [L326] return (retValue_acc); [L176] tmp = isHighWaterLevel() [L178] COND FALSE !(\read(tmp)) [L376] int tmp ; [L377] int tmp___0 ; [L378] int tmp___1 ; [L861] int retValue_acc ; [L864] retValue_acc = methaneLevelCritical [L865] return (retValue_acc); [L382] tmp = isMethaneLevelCritical() [L384] COND FALSE !(\read(tmp)) [L893] int retValue_acc ; [L896] retValue_acc = waterLevel [L897] return (retValue_acc); [L388] tmp___0 = getWaterLevel() [L390] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:24:31,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e32a6688-ee71-48e0-91b1-3756b50b6113/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...